4 CRUSTACEA MALACOSTRACA. tV. 



33. Campylaspis laticarpa n. sp. 



(PI III, figs. 3 a— 3 1.) 



Adult Female. In general aspect somewhat similar to C. rubicunda, but considerably larger. 

 The carapace seen from above (fig. 3 a) and pseudorostrum included is a little more than half as long again 

 as broad, and about ovate, but a good deal of the posterior margin is very feebly convex, and the anterior 

 third of the lateral margin to the middle of the frontal lobe is a little more convex than in C. rubicunda, 

 while the front angle of pseudorostrum is less acute. The ocular lobe (fig. 3 b) occupies more than half of the 

 length of pseudorostrum; it is oblong, broader beyond the middle than at the base, anteriorly rather broadly 

 rounded, and a pair of lateral ocelli are sometimes but not always perceptible. Seen from the side (fig. 

 3 c) the carapace with pseudorostrum is twice as long as deep ; pseudorostrum is moderately short, 

 nearly horizontal; the antennal notch is small but very distinct, triangular, and the angle below it a little 

 protruding. About on the anterior half of the dorsal surface and somewhat downwards on the sides the cara- 

 pace has a number of irregularly distributed, very small and low, rounded protuberances, which sometimes 

 are rather distinct, sometimes very feebly developed; besides the middle part of the dorsal median fine is 

 sometimes, but not always, distinctly impressed. The carapace covers nearly totally the three anterior free 

 segments, and the dorsal part of each of the two anterior segments protrudes a little, but has no distinct 

 lamella. The abdomen is moderately robust and as long as the carapace. 



Second pair of maxillipeds (fig. 3d) moderately strong; carpus with a broad, acute protuberance 

 on the inner side before the end; propodus (fig. 3e) with the inner distal angle produced as a triangular, acute 

 protuberance, and the distal half of the inner margin nearly straight with numerous short spines, while 

 the spine on the outer terminal angle is not very long but extremely robust, with the usual bend beyond the 

 middle and its distal part with some spines on the inner margin; dactylus with 3 spines, the first a little shorter 

 than the third and considerably overreaching the second. Third pair of maxillipeds (fig. 3 f) are very charac- 

 teristic; merus is large, long and broad, a little less than twice as long as broad, distally with the outer part 

 much produced but its end obtuse; carpus is very large, two-thirds as long as, and not much narrower than, 

 the merus; propodus proportionately small, oblong; all joints without marginal teeth. First pair of legs (fig. 

 3 g) normal ; ischium with a tooth on the inner angle ; merus thicker but not longer than the carpus, and 

 both joints without marginal teeth. Second pair of legs (fig. 3 h) of very moderate length, as carpus and dac- 

 tylus are somewhat short, and equally long. -- Uropods (fig. 3 i) only moderately long; peduncle a little 

 longer than the two posterior abdominal segments together and considerably more than twice as long as the 

 endopod, with the inner margin finely serrated; endopod with 3 spines on the inner margin and 3 terminal 

 spines, the median very long, the outer very short; exopod somewhat shorter than the endopod. 



Length 7 mm. 



Male. Carapace (fig. 3 k) differs in the normal way from that of the female, and has similar rudi- 

 mentary tubercles on the surface; the antennal notch is moderately and evenly concave, deeper and especially 

 broader than in the female, but an angle below it is not developed. The median dorsal lamella on first and second 

 free segment is distinct but short. — Uropods (fig. 3 1) more slender and distally longer than in the female; 



