Zoological Society. 227 



Spurious Species. 



Apus caudatusy De Kay, Nat. Hist. New York, Part 6, Crustacea, 

 p. 61. 



In the Journal of the Academy of Sciences of Philadelphia for 

 1818, vol. i., Mr. Say describes a parasitic Crustacean living on the 

 Calianassa major (a malacostracous Crustacean), found on the coasts 

 of the Southern States of N. America and of East Florida. He 

 names it the Binoculus caudatus; and in the Nat. Hist, of New York, 

 Mr. De Kay refers this species to the order Phyllopoda and to the 

 genus Apus, though he says, " I place it here with some hesitation." 

 This animal being parasitic is no doubt referred by Say to the genus 

 Binoculus of Geoffroy, (equivalent to the genus Argulus, and which 

 must be placed in the order Poecilopoda,) and not to the genus Bino- 

 culus of Leach, as De Kay supposes, which is the Apus of authors. 



Order Ostracoda. 



Family Cyprididje. 



Genus Cypris. 



1. Cypris Belcheri, Baird. Testa lucente, alhida, elongatUy 

 striata, supra arcuata, infra sinuata ; extremitate anteriore 

 latiore, margine compressa, rugata; extremitate posteriore 

 mucronata. 



Long. ^ poll. ; lat. 1 lin. 



Hab. ? "From Sir E. Belcher's Collection, along with some 



freshwater shells from the islands of the Eastern seas." Museum 

 Britannicum. 



The carapace valves or shell is of an elongate and narrow form, 

 having the anterior extremity considerably broader than the posterior, 

 and flattened on the margin, which is marked with a good many raised- 

 looking striae, which give it a puckered appearance. The posterior ex- 

 tremity is pointed and acute. The upper margin of the carapace is 

 arched, while the under margin is sinuated. The valves of the cara- 

 pace are convex in the centre and are of a shining white colour. 



In form this species resembles considerably the C. clavata, Baird, 

 Brit. Entomostraca, but is less club-shaped and more sharply pointed 

 at posterior extremity. 



2. Cypris Schomburgkii*, Baird. Testa subviridi, hirsuta, 

 puncturata, ovali ; extremitate anteriore rotundata, mar- 

 gine subcompressa ; extremitate inferiore oblique-truncata et 

 mucronata, antennis pedibusque brevibus, setis plumosis. 



Long. -^ poll. ; lat. -^ poll. 



Hab. In insula St. Domingo, India Occidentali. CoUegit M. Sall^. 

 Museum Britannicum. 



The carapace valves or shell is of an oval form, with the anterior 

 extremity rounded in front and having its margin rather flattened or 

 compressed, the posterior extremity being obliquely truncated above 



* Named after Sir R, Schomburgk, British Consul in St. Domingo. 



15* 



