169 



diately bcfurc it, excepfc oiily in the smaller female, luug 88 min., 

 from Roviguo and in a specimen from Calais, in which the 3^^ 

 tooth arises over the orbital margin, thougli the point projects 

 beyond it. Aceording to S. Kemp (1. c. p, 128) the 2^^ tooth 

 should sometimes be situated over the orbital margin and then only 

 one tooth on the carapace. The distance between the l^t and the 

 2*1 tooth is ahoiit one and n half as large as that between the 

 2'^ and the 3'^, rarely twice or a little more than twice and 

 only in one specimen it was not yet one and a half as large. 



The rostrnm of 3 specimens presents a rathcr abnormal form 

 and characters. Of the rostrum of a male, long 83 mm., from the 

 Straits of Calais, the upper margin is rather convex and armed 

 with 5 teeth, 2 of which are on the carapace, the 2^1 one-third 

 farther distant from the l^t as from the 3'i; the 4^^ tooth is 

 almost as far distant from the 3^^ as the 2^ from the l^t and 

 the 5th is one-third farther from the 4tli as the 4^1' from the 3*1; 

 these teeth present therefore a quite different appearance than 

 usually. There is no apical tooth and of the 3 teeth of the lower 

 margin the 2'^ is much longer and much Icss prominent than 

 in the typical species. 



In a young male, long 40 mm., from Brixham the rostrum 

 reaches only as far forward as the terminal spinc of the antennal 

 scales and is quite straight, not at all trending upwards ; the 

 upper margin is armed with 6 teeth as usual, an apical tooth is 

 wanting and the distal unarmed part is rather short, the lower 

 margin, finally, presents two large teeth. 



In another young male, long 53 mm., also from Brixham the 

 distal part of the rostrum is hook-shaped, the hook curved back- 

 ward and one observes but one tooth on the lower margin: a 

 remarkable monstrosity indeed. 



Antennular peduncle as lonr/ in the male as in the female. 

 Aceording to Heller, 1. c. p. 262, 264, this species should differ 

 from L. Treilliamis by the shorter ramus of the outer flagellum 

 not reaching the extremity of the rostrum, while in the latter 

 species it should project beyond it. 



