MONTAGUA. 53 



AM PHI POD A . STEGOCEPHALIDES. 



, NATA10EIA. 



Genus MONTAGUA. 



SPENCE BATE, Report Brit. Assoc. 1855, p. 57. Synopsis Brit. 

 Amph. Ann. Nat. Hist. 1857, xix. p. 137. Cat. Amph. Brit. 

 Mus. p. 54. WHITE, Pop. Hist. Brit. Crust, p. 166. 

 Leucothoe, KROYER (not LEACH), Nat. Tids. iv. p. 141 (2), i. p. 539, 1845. 



Generic description. Antennae subequal. Superior pair with- 

 out a secondary appendage Gnathopoda subchelate. Coxa of 

 second pair covering those of the first. Telson entire. 



THE antennae are nearly equal in length : the superior 

 do not possess a secondary appendage. The mandibles 

 are without an articulated appendage. The foot-jaws 

 are without squamous plates, and terminate in a hook. 

 The two anterior pairs of legs are unequal, subchelate ; 

 the first pair having the first joint not squamiformly 

 developed ; the second pair are larger than the first, 

 having the first joint squamiformly developed to con- 

 siderable dimensions, and overlapping that of the first 

 pair. The remaining legs are subequal. The coxae of 

 the three last pairs are small. The caudal appendages 

 are styliform, the last pair having but a single branch, 

 which is double-jointed. The terminal scale is squamous 

 and entire. 



This genus is named after Colonel Montagu, who was 

 a worthy pioneer in this branch of Zoology, and the 

 discoverer of the first species. 



