330 ON SOME NEW GENERA AND SPECIES OF AMPHIPODA, 



excavated, armed with a varying number of blunt teeth ; dactylos 

 more than half as long as the propodos. First and second pairs 

 of coxa) as deep as their respective segments ; third and fourth 

 rather deeper ; fifth scarcely half as deep as the fourth. Three 

 posterior pairs of pereiopoda subequal, rather short. Fourth 

 pair of pleopoda longer than the fifth and sixth ; fifth and sixth 

 subequal, with short, styliform, slightly curved rami. Telson 

 triangular, blunt. Colour light pink, uearly white. Length f in. 



Genus Hapmomia f novum J. 



Coxae not so deep as their respective segments. Superior 

 antenna) with an appendage. Inferior antennae longer than the 

 superior pair. Mandibles with a palp. Maxillipedes unguiculate 

 sub-pediform, provided with a squamiform plate on the basos 

 only. Ghiathopocla subchelate, unequal, posterior pair very large. 

 Pereiopoda stout. Posterior pleopoda biramous, the rami short, 

 conical. Telson single, elongate. 



This genus, of which I have as yet observed but one species 

 has affinities with Eurystheus and Amathia, but is distinguished 

 from the former by the form of the telson and the stoutness of 

 fhe pereiopoda, and from the latter mainly by the large size of 

 the posterior gnathopoda. 



Harmomia crassipes, sp. un. (PI. XIX., fig. 3.) 



Superior antennae as long as the cephalon and first six segments 

 of the pereion, first and second segments of the peduncle subequal, 

 the second narrower than the first, third scarcely distinguishable 

 from the articuli of the flagellum, flagellum rather longer than the 

 peduncle. Inferior antennae longer than the superior pair ; peduncle 

 and flagellum subequal. Anterior gnathopoda small ; propodos 

 ovoid; palm oblique, undefined. Posterior gnathopoda much larger 

 than the anterior pair ; carpus sub-triangular ; propodos irregularly 

 ovoid, palm oblique, excavate, defined by a triangular tooth, and 

 armed with another of similar form near the distal end. Two 



