308 Cauon A. M. Norman on 



wrist and hand are short and stiff, the finger in form of a 

 nail, about one third as long as the hand. The first pergeopod 

 (fig. 4) has the meros unusually expanded for the genus, the 

 carpus short, not exceeding half the length of the preceding 

 joint, itself nearly as broad as long, the propodos is somewhat 

 longer, the nail rather more than half as long as the propodos. 

 The propodos of the last perseopods (fig. 5) is much narrower 

 than the preceding joint and has a few short setae both on 

 the front and hinder margins. The uropods (fig. 6) are 

 furnished with only a few spines, and those of small size. 



Length 5 mm. 



This species has been found by Mr. Eobert Gurney in 

 brackish water in some of the rivers connected with the 

 Broads. 



Leptocheirus hispinosus, sp. n. 

 (PI. Xll. figs. 7-9 ; PL XIII. figs. 1-3.) 



The first segment of the urosome has a strong and acute 

 angular backward projection on each side (PL XIII. fig. 3), but 

 no central spine-process. The antennules have their secondary 

 appendage (PL XII. fig. 7) five-jointed and equal in length to 

 three joints of the flagellum. The first gnathopod (PL XIH. 

 fig. 1) has the coxa widening from the base and distally very 

 widely rounded; the basal joint is stout, the carpal and pro- 

 podal joints subequal in length, the former being only very 

 slightly longer than the latter, which is subovate, widest in 

 the middle ; the palm rounded off and not distinctly defined ; 

 the finger is longer than the extremity of the propodos, it has 

 its inner face serrulated and minutely ciliated. The second 

 gnathopod (PL XIII. fig. 2) has tlie coxa unusually small for 

 the genus, not reaching to as much as halt the length of tiie 

 basos ; this last joint is very long, nearly equalling the whole 

 of the rest of the limb; the propodos is not quite as long as 

 the carpus ; the finger is nail-formed and scarcely curved, 

 in length it is about equal to one third of the propodos. Tiie 

 first perasopod (PL XII. fig. 8) has the meros of equal breadth 

 throughout, and it is as long as the basal joint ; the carpus is 

 rather more than half the length of the meros ; the propodos 

 and finger gradually attenuate from the base of the former to 

 the acute extremity of the latter. The last pera3opod (PL XII. 

 fig. 9) has the propodos produced, half as long again as the 

 carpus; remarkably parallel-sided, with scarcely any spines 

 or setae except at the base of the nail. Uropods (PL XIII. 

 fig. 3) with numerous spines of considerable size, those of 

 second pair stronger than in any other species known to me 

 except I^. pilosus (Zaddach)=X. hirsutimanuSj Bate. 



