CUMACEA FROM THE COPENHAGEN MUSEUM. 9 



First legs of moderate length, extending beyond the tip of the pseudorostrum by 

 less than one-third of the length of the carapace. The basis is hardly shorter than 

 the distal segments together and is not produced into a tooth, Init bears two densely 

 plumose setfc at the distal end. The dactylus is a little shorter than the propodus and 

 about equal to the carpus. 



The peduncle of the uropods is equal to or very little longer than the last somite. 

 The endopod is a little shorter than the peduncle, acutely pointed at the tip, without 

 an apical spine, with four spinules on its inner edge. Exopod a little longer than 

 endopod, with a small apical spine and plumose setae on its inner edge. 



Adult Male. — The single adult male in the collection is crushed and imperfect. 

 So far as can be seen, however, it differs little from the female except in the usual 

 secondary sexual characters. The corneal facets of the eye are larger, the antennal 

 notch of the carapace is shallower, and the antennal tooth less prominent. The 

 uropods have the peduncle and the endopod fringed with setae on the inner edge, and 

 the rami are subequal in length. 



In immature specimens of both sexes, and apparently also in the adult male, the 

 first leg-bearing somite is quite concealed. 



Semarks. — This species resembles the last in having a smooth carapace, the ocular 

 lobe reaching the tip of the pseudorostrum, and the basal segment of the first let^s 

 not produced into a distal tooth. It differs in having the first leg-bearing somite 

 only partially exposed, the first legs much shorter, and the peduncle of the uropods 

 hardly longer than the last somite. 



The identification of the specimens described above with Mr. G. M. Thomson's 

 species is only possible on the assumption that he was in error in describing the 

 basis of the first legs as ending in a long spiniform process. The two long plumose 

 setie at the end of the basis in my specimens are often encrusted with mud and 

 matted together so as to form what appears at first sight to be a solid process having 

 very much the shape and proportions of the process figured by Mr. Thomson. 

 Until some other species is discovered agreeing more closely in this respect with 

 Mr. Thomson's figures, his name may be applied to the form here described. 



Occurrence. — New Zealand, " Lyttleton Harbour, 1-5 fathoms, 8/97, H. Suter Coll. " j 

 " Akaroa Harbour, H. Suter Coll." Copenhagen Museum. " Otago Harbour, surface- 

 net, G. M. Thomson." British Museum. 



Cyclaspis elegans, sp. n. (Plate II.) 



DescH2)tion of adult Female. — Total length G'3 mm. 



Kesembling C. exsculjjta Sars and C. perscul^ta Caiman in having the carapace 



strongly sculptured. The carapace is about one-third of the total length, and its 



vertical height is two-thirds of its length. On each side is a quadrilateral area, 

 answering to the " lateral depressed area " in Sars's description of C. exsculpta, bounded 



VOL. xviii. — PART I. No. 2. — August, 1907. c 



