lCRA MAI l\ 



.. ■•! bj •' al .1 single station 



I. .it '•; ,6 N. I. ong j | |o \\ [36 fath., temp 6.0 1 specimen 

 The type was secured West ol Ireland in (82 fath. (Caiman) 

 al several places neai Capri 111 depths from 53 to 584 fath (Caiman) 



i Leucon spinulosus n. sp 

 (Pi. I I.. 1 d 



Female (with marsupium). Carapace moderatelj oblong (fig 1 a), with pseudorostrum not in- 



cluded .iliout one-tliird as long again as deep, and aboul .1- long .1- the free segments combined; when the 



idorostrum 1- included the carapace is a little less than twice as long as deep The serration on the dorsal 



found only on its anterior third or fourth; as a rule j rathei long teeth are seen in front, then conies 



an interruption, and behind it 2 to 5 small teeth; a few teeth are found on each side between the antenna! 



h and the frontal lobe; the latter has no lateral tooth (fig. 1 b) Pseudorostrum is rather long, somewhat 



than half as long as the carapace, more than twice as long as deep at the base, and verj moderately 



upturned, with the proximal part of the upper margin a little convex; aboul the proximal half of its uppei 



side has | to ~ teeth, but these -how much individual variation in size, being sometimes all long, sometimes 



rather 01 very small, or some large and others small. The lower margin of the pseudorostrum is oblique bul 



not concave as in /.. siphonatus Calm., with a couple of smaller teeth near the middle. The antennal notch 



is very distinct and varies in shape, generally with a small tooth on its upper margin; the front margin above 



the notch generally with 2 or 3 long teeth and above them frequently 2 small teeth. The lower margin of the 



pa< e 1- serrated in nearly its whole length, and the anterior teeth are long and strong; in front the margin 



curves upwards to the antennal notch, below which a good-sized tooth is seen, while the tooth on the middle 



the curvature is also large. 



•thI and third free segments each with the anterior margin down to the middle ol the sides armed 

 with irregular, somewhat small teeth; furthermore the upper front angle of first segment has a couple of 

 teeth, the upper margin of fourth segment with 1 teeth; finally -> teeth just above the coxa of third leg on 

 the anterior margin of the segment, and a single tooth far downwards on the front margin of second seg- 

 ment; in immature specimens some or many of the teeth on the free segments are apparently wanting Al>- 

 domen slender and decidedly longer than cephalothorax with pseudorostrum. 



'I'll'- branchial siphon is almost or fully as long as the tree thoracic segments combined The antennulae 



eloped; second joint oi the peduncle twice as thick as. and slightly longer than, third 



'.which; ellum, while the inner flagellum is about as long as first joint of the outer. 



ir of legs mutilated m my specimens) Second pair oi g 1 c) most characteristic; the carpus 



times a long as the thick merus and considerably longer than the two distal 



terminal joint i- verv slender, with some very long seta at the end. The uropods 



t longer than the two distal abdominal segments combined; the peduncle in the 



a littl in your: l littli shorter, than first joint of the endopod, with only 



inner margin, lirst joint ol the endopod a little more than two and a half times as long as 



