CRUSTACEA — WHITELEGGE. 



207 



lobe oil its inner margin ; second twice as long as hroad, inner 

 margin armed witli five or six spinules, outer denticulated. 



Antennal scale cylindric, three times as long as hroad and 

 twice as long as the third joint ; there is a pair of setae at tlu^ 

 summit and one at the side. Fourth joint one-third shorter than 

 the fifth, the latter being about equal to the second. Flagellum 

 with five subequal articulations. 



The first legs have the basos as broad as long; the outer surface 

 is convex, the inner is flattened and bears an oblong transverse 

 depi'ession ; the inferior border is angular and denticulated, the 

 denticles being most strongly marked posteriorly. 



Hand oblong, its length exceeding the preceding joints com- 

 bined. Palm short, as deep as long, and about half the length of 

 the mobile finger, outer surface a little convex, 

 inner with a longitudinal angle terminating 

 in a prominent, broad, compressed lobe which 

 marks the boundary of a deep, inter-digital 

 excavation. Immobile finger horizontally 

 dilated; the inner border is rounded, nearly 

 straight and terminates in a short, curved, 

 horny spine; the outer border is strongly curved 

 thin, produced and indistinctly denticulated in 

 the middle, and bears a strong calcareous spine 

 distally. A faint longitudinal ridge is present 

 on the inner surface of the finger, and fre- 

 quently a large blunt cylindrical tooth which 

 is situated about the proximal third. Mobile finger rounded, 

 tapering, distally curved, with a strong, inwardly directed 

 tooth on its inner base and a corneous spine at its extremity. 



The second pair of legs has the basos joint about one-third as 

 wide as long ; the anterior border is straight and denticulated 

 throughout. Merus angular ; its width dis- 

 tally is about twice that of its base ; the 

 lower border is minutely denticulate, the 

 upper is smooth, and the external surface 

 bears an ill-defined longitudinal granular 

 ridge ; there is a small spine at the distal 

 extremity above and a large one below. 

 Carpus twice as long as broad and about two- 

 thirds as long as the merus ; the lower border 

 bears a few small denticles, a pair of large 

 spines and two unequal sette; there is a spine 

 at the superior distal extremity and one or 

 two granular ridges on the external surface. 

 Propodus one-third longer than broad, upper border armed with 

 two and the lower with three spines and three setse ; the distal 



Right Chelipede of 

 Male. 



Fig. 15rf. 



Second Rigut Leg. 

 Fig. 15e. 



