1528 THE VOYAGE OF H.M.S. CHALLENGER. 



with parallel lines longitudinally, the lines at the broadest part being about twenty in 

 number ; the remaining joints nearly as in Parapronoe campbclli ; the fifth joint rather 

 longer than the fourth. 



Fourth Perseopods. — The first joint not much longer or even much broader than 

 in the preceding pair, not nearly twice as long as broad, the front margin bulging a 

 little near the base, slightly channelled, for the most part straight, serrate near the 

 short sinuous apical margin ; the very convex hind margin much longer than- the front, 

 rising much above it, and the tongue-like apex (in one of the specimens examined) 

 descending a little below it ; the groove of the inner surface in front of the straight slit 

 has a sinuous margin ; the remaining joints are nearly as in Parapronoe campbelli, but 

 the fifth joint more curved ; the finger extremely minute, retractile within the pectinate 

 apex of the preceding joint. 



Fifth Perseopods. — The first joint pear-shaped, not as long as the breadth of the 

 first joint in the fourth pair, sometimes as in the other species with an indent low down 

 on the front margin, the rounded apex behind produced a little ; the minute second 

 joint very little longer than broad ; the third joint longer than the second, nearly twice 

 as long as broad, the apex rounded. 



Pleopods. — Coupling spines very short ; cleft spine with very short arms, the 

 longer arm with a small subapical ddatation ; there are several plumose setse on the 

 first joint of the inner ramus below the cleft spine, and eight on the outer margin of 

 the outer ramus ; the joints of the rami fourteen or fifteen in number. 



Uropods. — Peduncles of the first parr shorter than the rami ; the outer ramus a 

 little shorter than the inner, its outer margin closely pectinate except close to the base 

 and the acute apex, the inner margin with the pectination looser, beginning below 

 the centre, and not approaching so closely to the apex ; the inner ramus with the upper 

 half of the outer margin smooth, the lower half as in the outer ramus, the inner margin 

 with the pectination carried rather higher up than in the outer ramus ; the peduncles of 

 the second pair decidedly shorter than those of the first, the rami of nearly the same 

 length as in that pair but broader and narrowing much more abruptly at the apex ; the 

 outer ramus rather shorter than the outer of the first pair, its outer margin almost 

 smooth, with five little indents at the lower part, the inner margin pectinate at the 

 lower part ; the inner ramus about as long as the inner of the first pair, with both margins 

 pectinate on the lower part ; the peduncles of the third pair very short, broader than long ; 

 the outer ramus considerably shorter than the inner, with the outer margin smooth 

 except for a single indent, the inner margin for the most part pectinate ; the inner 

 ramus longer than the telson, very loosely pectinate on both margins, more strongly on 

 the inner than on the outer, and on the lower than on the upper part, the apex (in 

 the specimen, not acute. 



Telson triangular, elongate, reaching beyond the outer ramus of the third 



