I. '08. 113 



In only six of the above instances were the specimens cap- 

 tured on hard and rough ground ; in all the others they were 

 found on or over a muddy or sandy bottom. 



Although not hitherto recorded from Irish waters, C. Gor- 

 doni is widely distributed round the coast, as may be seen 

 from the list of records. It is, on the whole, a decidedly 

 scarce species and is usually found singly or in small numbers. 



Vertical ranqe. — This species, although in many cases 

 found under circumstances which afford good evidence that it 

 was inhabiting the bottom, has also been taken in midwater. 

 It has been found off the Irish coast over soundings of 21 to 

 more than 1,000 fathoms, but has not been proved to occur on 

 the bottom at greater depths than 199 fathoms. In the Bay 

 of Biscay it was trawled in as much as 246 fathoms, while in 

 the West x\tlantic it is known between 27 and 110 fathoms 

 (Smith). 



Genus Leontocaris, Stebbing. 

 Leontocaris, Stebbing, 1905. 



Leontocaris lar, Kemp. 

 Pi. XVII, figs. 1-17. 

 Leontocaris lar, Kemp, 1906. 



The rostrum (figs. 1 and 9) is a little longer than the cara- 

 pace and projects beyond the apex of the antennal scale. It is 

 quite straight, slightly ascendant and is furnished dorsally 

 with nine or ten deeply cut teeth, the distal of which are 

 smaller and more closely set than the proximal. There are 

 also three or four teeth situated on the carapace behind the 

 orbital notch : these decrease in size from before backwards. 

 Ventrally the rostrum is furnished with from nine to thirteen 

 closely set teeth, the posterior of which ai^e the largest. The 

 carapace is dorsally arched and the median carina is obsolete 

 close behind the middle point ; it is not much laterally com- 

 pressed and is considerably less than twice as long as deep. 

 Anteriorly it is produced as a rounded point below the orbit, 

 while opposite the base of the antenna there is a sharp spine 

 flanked with a short carina ; this spine originates close behind 

 the anterior margin. There is no supra-orbital spine. An- 

 teriorly and basallv the carapace is angular, but not produced 

 to a spine. 



The abdominal somites are all dorsally rounded ; the third is 

 not produced as a spine over the succeeding somite, and the 

 sixth is about one and three-quarters the length of the fifth. 

 The telson (fig. 17) is longer than the fifth and sixth somites 



H 



