8 DE. W. T. CALMAN ON NEW OR RARE 



the peduncle, with a slender apical spine and five small spines on the distal half of 

 its inner edge. The exopod is one-fourth longer than the endopod, and has a slender 

 apical spine with two spinules at its base and a single slender spine a little way 

 down the inner edge. 



Adult Male. — Total length 3-3 mm. 



Resembling the female in general form. Carapace a little less deep. The ocular 

 lobe is more swollen and the corneal facets are larger. The antennal tooth is not so 

 sharp. The first leg-bearing somite just visible between the carapace and the second 

 somite. The first legs are long and slender as in the female. 



The peduncle of the uropods is of the same relative length as in the female and 

 bears a series of plumose seta? on the inner edge. The rami are less unequal than in 

 the female, the endopod being about five-sixths of the length of the peduncle and 

 the exopod only a little longer. The endopod has ten spinules on its inner edge, 

 and the exopod bears three plumose setae internally. 



Bemarks.- — The smoothness of the carapace and the presence of five free thoracic 

 somites bring this species into the neighbourhood of C. picta, C. herdmani, and 

 C. hornelli Caiman. While resembling the last two in general shape, it differs from 

 them in having the basal segment of the first legs not produced into a distal tooth. 

 C. picta differs in the acute pseudorostrum, the more arched carapace, the shorter rami 

 of the uropods, and in the much shorter first legs. 



Occurrence. — " Cruz Bay, St. Jan [Danish West Indies]. Chr. Levinsen, 6.1.96." 

 Two specimens. Copenhagen Museum. 



Cyclaspis LEVIS G. M. Thomson. (Plate V. figs. 6-8.) 



Cyclaspis levis G. M. Thomson^ Jourii. Linn. Soc, Zool. xxiv. p. 264, pis. xvi. & xvii. figs, 1-26 

 (1892). 



Description of adult Female. — Tolal length 7T6 mm. 



The carapace is about two-sevenths of the total length, hardly compressed, its 

 vertical height little more than half its length. The dorsal edge distinctly keeled ; 

 keel flattened or faintly doubled posteriorly, very little arched as seen from the side. 

 Pseudorostrum very short, the ocular lobe reaching quite to the tip. Antennal notch 

 not widely open and antennal tooth not acute. Ocular lobe slightly prominent on 

 dorsal surface. The surface of the carapace is everywhere beset with shallow and 

 inconspicuous pits. There is a faintly marked ridge running backwards for a short 

 distance from the antennal tooth. 



First leg-bearing somite exposed at the sides only. Second with a distinct dorsal 

 keel. 



Abdomen a little longer than the cephalothoracic region ; the somites subcylindrical 

 with lateral articular processes, with a median dorsal and slight lateral keels. 



Antennuies short; the last two segments of the peduncle equal. 



