95 



just in front of the eye ; inner flagellum about as long as the carapax, 

 outer much shorter. Antennal scale regularly ovate at tip ; flagellum 

 much longer than the carapax. Legs of the first and second pair 

 very much as in the last species. Remaining thoracic legs slender, 

 decreasing successively in size posteriorly, those of the third pair not 

 very much stouter than those of the fourth ; all nearly naked and very 

 slightly spinulose, the meral and carpal segments in the fourth and 

 fifth pair armed beneath as in A. rivalis, and the dactyli as in that 

 species. Abdomen similar to that of A. rivalis, but the lamella? of the 

 appendages of the sixth segment are rather longer in proportion, and 

 the terminal segment is rounded instead of truncate at the extremity. 

 Length from tip of rostrum to extremity of abdomen, 62.0 mm - Length 

 of carapax, from orbit to middle of posterior border, 18.2 ; length, 

 including rostrum, 22.8; breadth of carapax, 11.8; height of carapax, 

 14.8. 



Six specimens from the same locality as the last species. 



Evatya, gen. nov. Allied to Atya, but the body stout, not compressed ; 

 rostrum prominent, carinate, and armed above with stout spines ; 

 anterior portions of the carapax with numerous scattered spines and 

 spiny carinations ; a spine on each side above the eye and three on 

 the anterior border at the base of the antenna. Thoracic legs of the 

 third pair very stout and tuberculate ; the basis completely anchylosed 

 with the coxa, and the ischium so firmly united to the merus as to 

 admit of no motion between them ; the propodus very much shorter 

 than the carpus ; the dactylus short, unguiform, and so closely united 

 with the propodus as to admit of no motion, or only the very slightest, 

 at the articulation with it. 



Evatya crassa, sp. nov. Male and Female. Carapax stout, about 

 as broad as high, and with broad emarginations in the lateral margins 

 above the bases of the legs of the third pair. Rostrum as long as the 

 antennal scale, slightly curved downward, broad at base, and tapering 

 to an acute point; a broad carina above armed with six to eight stout 

 spines, about half of which are on the carapax back of the base of 

 the rostrum. Anterior half of the median portion of the carapax 

 armed with small spines which decrease in size posteriorly; two 

 vertical spines on each .side at the base of the rostrum, the anterior 

 one, just over the eye, very large and stout, the other smaller and 

 directly behind the first; a stout antennal spine directed upward, 

 and, just below it, two smaller spines in the margin ; from the antennal 

 spine, a carina, somewhat broken in the middle and armed with a 

 single line of small spines, extends backward nearly to the cervical 

 suture ; just above this, but more posteriorly, is a smaller broken line 

 of spines, which is connected with the spines on each side of the base 

 of the rostrum by a little group of several spines somewhat isolated 



