683 



Page 66. Uen. Orchomenella. 



Remarks. M. J. Bonnier has recently proposed to replace this 

 name with Trypliosa because the Orchomenella ciliata of the author has turned 

 out to be identical with Anonyx namus of Kreyer, which was quoted by Boeck 

 in his great work as the type of his genus Tryplwsa. But the diagnosis origi- 

 nally given by Boeck of the latter genus does not in reality apply to that 

 species, which was not figured in his work, but more properly to the 2 species 

 T. H0rringii and T. nanoides. Thus he says that the mandibular palp is affixed 

 on the same level as the molar tubercle, which is not the case with the 

 Kreyerian species; and moreover the anterior gnathopoda are characterised as 

 elongated, which likewise cannot properly be said of the latter form, but may 

 fairly be so of the other species referred by him to the genus Tnjplwsa. 

 Under such cirumstances, I think I am right in retaining the genus Orcho- 

 menella in the sense originally adopted in this work. 



Page 66. Orchomenella minuta. 



Remarks. M. J. Bonnier proposes to separate this species generically 

 from 0. pinguis on account of the epistomal plate being a little more promi- 

 nent, and on this account to transfer it to the genus Orchomene. This is un- 

 questionably erroneous, as the present species is otherwise very closely allied 

 to 0. pinguis, and by no means generically distinguishable from it. The 

 latter species M. Bonnier ranges within the genus Tryplwsa. 



Distribution. Atlantic coast of North America (Sidn. Smith), coas 

 of France (Chevreux). 



Page 67. Orchomenella pingvis. 



Occurrence. I have found this form of late years in several 



localities both of the south and west coasts of Norway, as also in the Trond- 

 hjemsfjord. 



Distribution. British Isles (Robertson). 



Page 69. Orchomenella ciliata. 



Remarks. I fully admit that this form, as pointed out both by Dr. 

 Hansen and M. Bonnier, is the true Anonyx nanus of Kroyer, and that of 

 course the specific name ciliata ought to be discarded and replaced by that 

 of nana. But as this species does not agree with the diagnosis given by 

 Boeck of his genus Tryphosa, its name must be henceforth OrcliomeneVn nana, 

 and not, a,s proposed by Boeck and adopted by M. Bonnier, Tryplwsa nana. 



Distribution. British Isles (Robertson), Dutch coast (Hoek). 



