90 B. IF. Kinike/, 



but with group of setae at posterior distal corner; fourth joint 

 scarcely longer than third, oblong, ^/s as broad as long, armed with 

 several fascicles of setae on anterior margin ; wrist triangular, not 

 as long as wrist of first gnathopod, provided with numerous setae 

 on distal margin ; hand much like that of first gnathopod but 

 broader and shorter, palm less oblique and posterior margin more 

 convex ; finger short and stout with concave margin serrate. 



First and second pereiopods with spinning glands ; epimera moder- 

 ate, gradually increasing in size toward posterior end, wiih ventral 

 margins in each case rounded and armed with very short setae. 



Uropods, 3 pairs, biramous ; second pair extending beyond first 

 and third ; first pair with outer margin of peduncle armed with 3 

 conical toothlike spines, inner ramus more than half as long as ped- 

 uncle and slightly longer and more slender than outer ramus ; rami 

 provided with toothlike spines on margins and apically ; second pair 

 like first but stoviter and with no spines on peduncle ; third pair 

 with peduncle extending beyond that of second, armed with several 

 toothlike spines on distal margin; rami very short, about half as 

 long as peduncle and terminating in 2 stout hooked spines and armed 

 wath several long setae. 



Telson broader than long, semicircular, with apex slightly truncate 

 and with lateral margins slightly produced to form triangular pro- 

 cesses which are each armed with a seta, apex also provided with 4 

 long setae and lateral margins with 4 shorter ones. 



Length 12 mm. 



The species was represented b}- a number of specimens. It 

 occurs abundantly on the New England coast. 



Amphithoe rubricata (Montagu, 1808) Leach, 1813. 



1808. Cancer rubricatus. Montagu, Trans. Linn. Soc. London, 



vol. 9, p. 99; pi. 5, fig. 1. 



1813—14. Amphithoe rubricata. Leach, Edinb. Encycl., vol. 7, 



p. 403. 



Eyes moderately large, round, compound. 



First antennae longer than second. First joint of peduncle fairly 

 stout and shorter than second ; third joint short and slender, hardly 

 to be distinguished from proximal joints of flagellum, about '/s as 

 long as second joint; flagellum composed of many segments, long 

 and slender and less than twice as long as peduncle. Second an- 

 tennae with peduncle longer than that of first ; fourth and fifth joints 

 subecjual in length ; third joint rather broad and shorter than broad ; 

 flagellum composed of man\- segments. 



