37 



the distal end there are three larger spines. The carpus has 

 on its outer margin one proximal, two central, and three distal 

 spines, all of which are large ; there are also two or three small 

 distal spines. As usual the palm of the propodite is longer than 

 the fingers, w^hich have minutely serrate cutting edges and the 

 tips of which cross one another. The propodite, carpus, and 

 distal part of the merus bear setae on the outer edge. 



Li the third pereiopods the dactyl is slightly larger than the 

 fixed finger. The carpus has a single distal spine. 



The fourth pereiopods are shorter and feebler than the third, 

 and the carpus has no distal spine. 



In the very short and slender fifth pereiopods the fixed finger 

 is represented by a very small process of the propodite. 



The pleopods are well -developed, biramous appendages, ex- 

 cept the first pair, which are small and rudimentary. 



The basal joint of the uropods bears a small spine at its 

 outer angle. Both sxopodite and endopodite are considerably 

 shorter than the telson and are fringed with setae. The uropods 

 have no spines on their margins. 



Size. — ^The principal dimensions of the single specimen taken 

 by the Helga are as follows : — 



Length .. .. .. ..26-5 mm. 



Length of carapace .. .. ., 15-5 mm. 



Length of abdomen . . . . . . 11 mm.. 



Breadth of carapace . . . . . . 14 mm. 



Length of chelipeds . . . . . . 22 mm. 



Irish Distribution : 

 Helga. — 



S. R. 193—10 II '05.— 40 mis., N. by W. of Eagle Island, 

 Co. Mayo, 54° 50' N., 10° 30' W. Soundings 650 fms. 

 Triangle net, O — 630 fms. Surface temperature, 

 9-6° C. Salinity 35-41%^ ; at 480 fms., temperature 

 9-2° C, One, 26-5 mm. 



Eryonicus Kempi, n. sp. 



PI. V, figs. 3-8. 



This species belongs to the division of the genus in which 

 the carapace is more or less densely covered with spines, between, 

 as well as on, the definite ridges. The spines, however, are not 

 so thickly scattered as in ^. Scharffl, and they are rather shorter 

 than in that species. The inter-carinal spines are almost entirely 

 absent on the submarginal part of the carapace, being represented 

 merely by a small group near the posterior end. On the upper 

 branchial, cardiac and gastric areas, however, they are present 

 in large numbers, interspersed with setae. The carapace is 

 very broad in its posterior half ; in the branchial region its 

 breadth is greater than the length from rostrum to hind margin. 

 It narrows rapidly in front, and the anterior end is somewhat 

 rounded as seen from above. In the cardiac region the surface 



