ON CRUSTACEA BROUGHT BV DR WILLEY FROM TllK SOUTH SEAS. 631 



Pleopods. The peduncle is broader than long, with four uncinate spines on the 

 inner margin of the first and second pairs, 6 in the third, 3 in the fourth, none in 

 the fifth ; below the hooks in the second pair there are five spine-like setae. In the 

 fii-st four pairs both rami are partially fringed with plumose setae ; in the last three 

 pairs the outer ramus has a transverse suture. The male appendage of the second 

 pail' is straight except at the point of attachment, and has a subacute apex, which 

 reaches little beyond the inner ramus. In the fiftli pair the peduncle has a pointed 

 outer apex, and the inner ramus sends up a process in front of the jjcduncle's inner 

 margin. 



Uropods. The peduncle strongly produced, its apical part fringed on the inner 

 margin with plumose setae ; the inner ramus reaching beyond the telson, its broadly 

 rounded, strongly fringed distal part having eight or nine spines among the plumose 

 setae ; the outer ramus much narrower and slightly shorter ; its outer margin coarsely 

 serrate, nearly straight, with a few spines and setae, the apex a little notched ; the 

 inner margin and the distal surfaces crowded with plumose setae. 



Length, 8"5 mm. ; breadth rather more than a third of the length. 



Habitat. New Britain, Blanche Bay, at 100 fathoms depth, and at 60 fathoms. 

 Those from the greater depth, as preserved, have brown eyes and dark dorsal markings, 

 those from the smaller depth have black eyes, but are otherwise quite pale in colour. 



The specific name refers to the richness of detail in the pleon, beautiful to observe, 

 but rather too much of a good thing for the efforts of an ordinary pencil. 



ClKOLANA ALBICAUUATA, U. sp. 



Plate LXVIIb. 



Head broader than long, little immersed, rostral point minute. Segments of peraeon 

 broad, not very unequal in length, first the longest. Anterior side-plates oblong, those 

 of seventh segment produced acutely backward, but not beyond the first segment of 

 the pleon, which is well displayed. Second to fourth segments of pleon slightly, and 

 fifth considerably, narrower than first. Terminal segment below insertion of the uropods 

 narrowing with gently convex sides to a subacute apex, its lower part fringed with 

 long plumose setae and eight spines. 



Eyes large, dark, distant, subquadrangular, broader behind than in front, ocelli more 

 than fifty in number. 



First anteimae short, moderately stout, second joint narrower than first or third, 

 flagellum shorter than peduncle, tapering, seven-jointed. 



Second antennae about half as long as the body, peduncle (as in Girolana gracilis, 

 Hansen) having the third joint wide.st distally and the fourth widest proximally, the 

 two subequal, each shorter than the fifth; fiagellum twice as long as peduncle, with 

 about twenty joints, many of them slender. 



The left mandible has the two middle teeth of its cutting plate very fiat and 

 feebly separated. All the joints of the mandibular palp aie narrow. The firet maxillae 

 have the usual three stout plumo.se setae on the inn<r ])late; the outer is apically 

 fringed with ten spines of unequal length, all slender, some pectinate. The maxilli|)o(ls 



