AMPHIPODA AND ISOPODA FROM BARRINGTON TOPS. 



95 



CCJBARIS HELMSIANUS Sp. nOV. (figS. 18 to 22). 



Specific diagnosis. — Body (tig. 18) oblong oval, fairly 

 convex, the side portions of the segments wide, projecting 

 slightly outwards. Whole surface minutely squamate. 

 Dorsal surface of head uneven, with a slight groove parallel 

 to the hind margin, and the portions between it and the 

 eyes slightly raised. Segments of peraeon usually with 

 indistinct tubercles, about six or seven on each side of 

 median line but sometimes fewer on the posterior segments, 

 median portion of each segment sometimes free from 

 tubercles. 



Fig. 18. Cubaris helmsianus, side view of animal. 



Head (fig. 19) rather more than twice as broad as long. 

 Epistome (fig. 20) with upper margin reaching in advance 

 of the front, and with a deep triangular depression and 

 notch in the middle. 



Fig. 19. Cubaris helmsianus, head seen from 

 above. 



Eyes of moderate size, convex, projecting beyond the 

 lateral margin of the head. 



