- 2 9 - 



but, as just stated, the copulatory organs had not arrived at 

 full maturity. Subadult maie spécimens in the Monaco 

 collection agrée with his figs. i, 2 and 7 as to the shape of the 

 elongate triangular rostrum and the copulatory organs; on 

 his fig. 2 the carapace has been drawn without any latéral 

 marginal denticle, but I suppose that t his tiny tooth has 

 been overlooked; in his text the présence or absence of this 

 denticle is not mentioned. Besides the différences in the 

 shape of the front part of the carapace with the rostrum etc. 

 between adult female, adult maie and subadult or younger 

 spécimens of both sexes some minor individual différence in 

 the shape of rostrum is observed in animais of the same sex 

 and state of development. — TV. tenella, G. O. Sars, is a very 

 young spécimen of an allied species. 



Genus NEM ATODACTYLUS, Caïman 

 Only one species is known. 



16. Nematodactylus boopis, Caïman 



Nematodactjlus boopis, Caïman, On Deep-sea Crustacea 

 from the South West of Ireland. Transact. Royal Irish Acad., 

 vol. XXXI, part 1, 1896, p. 17, Pl. 11, figs. 19-28. 



Localities. — Stat. 1639, 5 spécimens; stat. 1676, 4 spé- 

 cimens; stat. 1749, 1 spécimen; stat. 1768, 1 spécimen; stat. 

 1844, 9 spécimens; stat. 1 856, 4 spécimens; stat. 1874, 

 3 spécimens. 



Remarks. — ■ It is very curious that this fine and large 

 species, of which 27 spécimens were captured on 7 stations in 

 1904, has not been taken by Challenger or by the German 

 Plankton-Expedition ; it was established more reçently on 

 1 spécimen collected off the south-west coast of Ireland. 



(30) 



