MAGAZINE 



OF 



ZOOLOGY AND BOTANY 



ORIGINAL COMMUNICATIONS. 



I. — The Natural History of the British Entomostraca. By William 

 Baird, Surgeon. Plates VIII. IX. X. ( Continued from p. 41. J 

 In my former paper, I gave a short general history of the " En- 

 tomostraca/' — a hrief account of the authors who have noticed them 

 particularly ; and some general observations on their habits and 

 manners. I also mentioned some of the various systematic arrange- 

 ments which have been adopted by different authors, and stated the 

 uncertainty which still exists as to their proper arrangement in a 

 general system. In particular I described the arrangements of La- 

 treille in the last edition of Cuvier's Regne Animal, and of Milne 

 Edwards in his late work on the Crustacea, which latter I proposed 

 adopting. The second volume of M. Edwards's work, however, in 

 which the Entomostraca are to be treated of, not having yet been 

 published, it will be necessary to follow Latreille's method in de- 

 tail ; and thus the first genus which I shall give a monograph of, 

 is the genus " Cyclops :" — 



Class. — Crustacea— Division, Entomostraca. 



Ord. Branchiopoda — Section, Lophyropa — Group, Carcinoida. 



Genus, Cyclops.* 



Bibliographical History — The first notice of any animal of this 

 genus that I am aware of, is to be found in a little work of Stepha- 

 nus Blancardus, the " Schou-burg der Rupsen, Wormen, Ma'den, 

 &c.," published at Amsterdam, in 1688. His notice of it, however,, 



* " Class, Crustacea ; Sub- Class, Maxilles ; Legion, Entomostraca; Order 

 Copepodes." — Milne Edwards. 



NO. IV. X 



