36 ORCIIESTTTD^E. 



A MPHIP ODA . ORCHESTIJDM. 



SALTATORU. 



ORCHESTIA DESHAYESII. 



Specific character. Second pair of gnathopoda, having the propodos 

 tapering, the palm occupying nearly the entire length of the inferior margin, 

 defined by a large tooth at the inferior angle. 



Length $ of an inch. 



Orchcstia Deshayesii. AUDOUIN, Explic. Savigny, Crust. Egypte, pi. xi. 



fig. 8. MILNE -EDWAKDS, Crust, iii. p. 18, Ann. 

 Sc. Nat. xx. p. 361. WHITE, Catal. Brit. Crust, 

 p. 48. Popul. Hist. Brit. Crust, p. 163. SPENCE 

 BATE, Ann. Nat. Hist. February, 1857. 



EYES black, large, irregularly round. Superior an- 

 tennae reaching to half the length of the penulti- 

 mate joint of the peduncle of the inferior. Inferior 

 antennas about half as long as the body of the animal. 

 The last joint of the peduncle as long again as the 

 penultimate, and nearly three times as long as the arti- 

 culated termination. First pair of legs small, the palm 

 but little broader than the hand, the inferior angle ob- 

 tusely rounded : the hand not so long as the wrist : 

 wrist with a small tubercle near the centre of the inferior 

 margin. Second pair of legs with the hand large and 

 long, broad near the wrist, and tapering towards the 



