STALK-EYED CRUSTACEA 325 



following joints. The internal antennae are small, andean 

 be folded under the front. 



The leg's are short and strong. 



I. Cymopolus asper. 



Cyuwpolus aspei- . . . H. Milne Edwards. 



The carapace thick, larger in front than behind, and 

 having, as well as the legs, many elevated tubercles and 

 truncate spines. The rostrum is large ; it is sloping, and 

 notched upon the edges. The legs of the first pair are 

 equal, large and spiny. The walking legs are short and 

 strong ; they are entirely covered with spines, as also the 

 external maxillipedes, the sternum, and the abdomen. 



Range. — Montserrat ; in deep water, 



II, Buccal cavity nearly quadrate : — 

 4. Cymopolia. 



Cyiuopolia . . . Roux, Milne Edwards. 



Carapace broadly transverse, with dentated (not 

 spinose) front, and dentated antero-lateral margins. 

 Buccal cavity nearly quadrate, not triangulate. The 

 afferent channel to the branchis opens immediately at 

 the bases of the first pair of legs. The genital orifice of 

 the female, instead of being placed in the third sternal 

 segment, is on the second near the suture of the first. 



Range. — West Indian Sea ; in deep water. 



Synopsis of the Species. 



A. The lateral edges of the carapace have three teeth. 



a. Orbits very little advanced. — (C. sica.) 



b. Orbits advanced so that middle lobe of wall hides 

 peduncle when it is retracted. — [C. dilatata.) 



