476 EEPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Sj)ecimens examined. 



Locality. 



Bottom. 



When 

 collected. 



Received from- 



Specimens. 



No. and sex. 



Dry. 



Ale. 



4936 

 4935 



Cape Ann, N. N. W., 



15 miles. 

 St. George's Banlis. . 



Gravel stones 



,1878 

 ,1873 



V. S. Fish Com. 

 .-..do 



Id. 

 15- 



The following are the most important points in which it (lilfers from 

 A. spinosa : The lateral processes are much shorter and in close contact, 

 the three basal joints of the legs almost entirely lack the spinous tuber- 

 cles characteristic of that species ; the antennae are much stouter, the 

 rostrum stouter and less constricted at the base, and the auxiliary claws 

 are less than half as large; (this last character affords the readiest 

 means of distinguishing the two species.) 



Family III, PALLENID^. 

 Pallene Johnston. 



Body comparatively stout, 

 bust, three-jointed, chelate, 

 jointed, present in both sexes. 

 claws. 



Eostrum short, rounded. Antennoe ro- 

 Pali^i wanting. Accessory legs nine- 

 Legs very long; dactylus with auxiliary 



Pallene empusa Wilson. 



Proc. Conn. Acad., vol. v, jx 9, PI. Ill, fig\s. 2 a to 2 g, August, 1878. 



Plate II, Figures 5 to 7. 



Body robust, smooth, distinctly segmented. Lateral processes weU 

 separated. Neck long, very slender at base. Oculiferous tubercle sub- 

 acute, small, but in'ominent. Abdomen very small and short. 



Eostrum nearly hemispherical, evenly rounded, smooth. 



Antennoe sparingly hairy, short; and stout. The opposable edges of 

 the second and third joints are coarsely toothed, the teeth evenly 

 rounded, so that the outline is deeply sinuous. There are about seven 

 of these on the second joint, and many more, smaller ones, on the 

 dactylus. 



Accessory legs in the male about one-third the legs; the third joint is 

 curved and about equal to the two basal joints united. Fourth joint 

 considerably longer than the third, suddenly expanding at its distal ex- 

 tremity below; the five remaining joints are much shorter and nearly 

 equal ; the terminal one smoothly rounded at the extremity ; each of the 

 outer four joints is armed with a series of seven or eight spines; these 

 are very broad and thin, with minute slender teeth, whicli do not extend 

 to the*baso and are usually terminal ; some of the spines are truncated, 

 others smoothly louuded at the extremity. In the female the appendage 



