Paul Hallez (10 September 1846 - 2 November 1938) was a French

zoologist Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the animal kingdom, including the structure, embryology, evolution, classification, habits, and d ...

and embryologist born in

Lille Lille ( , ; nl, Rijsel ; pcd, Lile; vls, Rysel) is a city in the northern part of France, in French Flanders. On the river Deûle, near France's border with Belgium, it is the capital of the Hauts-de-France region, the prefecture of the N ...

. In 1864 he began his scientific career as a préparateur of natural history under

Jules Gosselet Jules-Auguste Gosselet (19 April 1832 – 20 March 1916) was a French geologist born in Cambrai, France.Sorbonne Sorbonne may refer to: * Sorbonne (building), historic building in Paris, which housed the University of Paris and is now shared among multiple universities. *the University of Paris (c. 1150 – 1970) *one of its components or linked institution, ...

with an award winning treatise on

Turbellaria The Turbellaria are one of the traditional sub-divisions of the phylum Platyhelminthes (flatworms), and include all the sub-groups that are not exclusively parasitic. There are about 4,500 species, which range from to large freshwater forms mor ...

titled ''Contributions à l'histoire naturelle des turbellariés''. He held the chair of zoology at Lille from 1888 to 1906, then served as chair of comparative anatomy and

embryology Embryology (from Greek ἔμβρυον, ''embryon'', "the unborn, embryo"; and -λογία, ''-logia'') is the branch of animal biology that studies the prenatal development of gametes (sex cells), fertilization, and development of embryos ...

from 1907 until his retirement in 1919. In 1888 he founded a marine biological laboratory at

Le Portel Le Portel (; vls, Turbodingem) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France. Geography Le Portel is a tourist, fishing and light industrial town situated about southwest of Boulogne town centre, at t ...

that was associated with the

Université Lille Nord de France The Community of Universities and Institutions (COMUE) Lille Nord de France (formerly Université Lille Nord de France) was a French Groups of Universities and Institutions ( COMUE) spread over multiple campuses and centered in Lille (North - Hauts ...

. His scientific work largely dealt with flatworms, nematodes, the phyla-

Bryozoa Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquatic invertebrate animals, nearly all living in sedentary colonies. Typically about long, they have a special feeding structure called a ...

and

Nemertea Nemertea is a phylum of animals also known as ribbon worms or proboscis worms, consisting of 1300 known species. Most ribbon worms are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. Many h ...

, etc. He described a number of new species collected from

Jean-Baptiste Charcot Jean-Baptiste-Étienne-Auguste Charcot (15 July 1867 – 16 September 1936), born in Neuilly-sur-Seine, was a French scientist, medical doctor and polar scientist. His father was the neurologist Jean-Martin Charcot (1825–1893). Life Jean- ...

's Antarctic expeditions. The following species are named after Hallez: * ''Timea hallezi'' ( Topsent, 1891) * ''Procerastea halleziana'' ( Malaquin, 1893) * ''Scaptognathus hallezi'' ( Trouessart, 1894) * ''Obrimoposthia hallezi'' ( Böhmig, 1908). The genus ''Hallezia'' Sand, 1896 ( Protozoa) is also named after him.

Selected writings

* ''Contributions à l'histoire naturelle des turbellariés'', 187
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* ''Embryogénie des Dendrocles d'eau douce'', 188
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* ''Morphogénie générale et affinités des Turbellariés (Introduction à une Embryologie comparée de ces animaux)'', 1892 * ''Catalogue des rhabdoclides, triclades & polyclades du nord de la France'', 1894.
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References

(translated biography) {{DEFAULTSORT:Hallez, Paul 1846 births 1938 deaths Scientists from Lille Academic staff of the University of Lille Nord de France French embryologists 19th-century French zoologists Lille University of Science and Technology alumni 20th-century French zoologists