]893.] MB. G. C. BOURXE OX XEW COPEPODA. IG") 



lateral setse. Mandible stout, the palp well develojjecl, the basal 

 joint produced in a sharp process, the outer joint bearing three 

 terminal and one lateral seta. First pair of feet having the inner 

 bi\anch 3-jointed, the proximal and distal joints subequal in length, 

 the middle joint rather more than half the length of the other t\^o ; 

 all three joints denticulate on their outer margins. The outer 

 branch reaches as far as the first third of the distal joint of the 

 inner branch, and is provided with two terminal geniculate setse and 

 a stout external spine on each joint. Inner branch of the 2ud, 

 3rd, and 4th swimming-feet 2-jointed, the proximal joint minute ; 

 outer branch 3-jointed, each joint denticulate along its outer 

 n^ai'gin and bearing a powerful spine. Basal joint of the fifth pair 

 of feet broad, the inner segment bearing four stout plumose sette. 

 The second joint ovate, somewhat elongate, bearing three plumose 

 terminal setae and three external marginal spines, of which the 

 middle is t^\•ice tlie length of the other two. Posterior margin of 

 the first abdominal segment strongly denticulate dorsally, the two 

 succeeding segments denticulate ventrally. Turca short ; caudal 

 setse minutely aculeate and half as long as the whole body. 



This is a well-marked species, agreeing with C. northumhricus 

 and C. trispinosus in the characters of the 2nd, 3rd, and 4th 

 swimming-feet, whicli are two-jointed, and in the nine-jointed 

 first autennse ; but differing from both in the form of the mandible- 

 palp, in the inner branch of the second antennse, iu the proportions 

 of the first pair of swimming-feet, and in the characters of the 

 fifth pair of feet of the female. 



Fam. Ctclopiu-E. 

 CrcLOPS AFEiCAXcs, n. sp. (Plate VI. figs. 8-11.) 



Ce])halothorax ovate, evenly rounded in front. The first and 

 second free thoracic segments of equal length, the third about two- 

 thirds the length of the two preceding segments. Abdomen loug 

 and narrow, its length, not including the furca, equal to the 

 four free thoracic segments. The first abdominal segment in the 

 female long, equal in length to the three succeeding segments. 

 The last abdominal segment finely denticulate on its posterior 

 margin. Furoal segment equal in length to last two abdominal 

 segments. Of the caudal seta? the two outermost are short, the 

 internal median seta very long, equal in length to the whole 

 abdomen and the last t^o thoracic segments. 



The first antennfc of the female 12-jointed, rather shorter 

 than the first joint of the ce])halothorax. First antennio of the 

 male 14-jointed, the basal joint equal in length to (he next six 

 joints, ilinge-joints between the 7th and 8th and 12lh and 13th 

 joints; the iJth to the lltli joints inclusive swollen. Mandiblo- 

 ]>alp consisting of a well-developed basal piece bearing two long 

 and one short seta. Maxilla), maxilli])cds, and swimming-feet as 

 in C orieuUdis. Fifth pair of feet rudimmtary, nsenibling those 

 of C. orientalis. 



