Report on the Malacostraca, P\'cnogonida and some Entomostraca. 615 



In addition to the species mentioned in the above lists, there 

 are still a few which do not seem to fit into a zoogeographical 

 review, for the reason that our present knowledge of their distri- 

 bution is too imperfect. These species are: 



Ambasia Danielssenii. Acanthoniscus typhlops. 



Rhachotropis Helleri. Janthe laciniata. 



Rocinela maculata. Cordylochele (Pallene) malleolata, 



Ambasia Danielssenii is known from E. Greenland: 70°35' N., 

 19°33' W., 140 fm. (H. J. Hansen 1895) and from the whole of Norway, 

 40 — 100 fm., right to Finmarken (Sars "Account"). Thus it is per- 

 haps a species belonging to Group 1 В (cold area of the Norwegian 

 Sea with the Norwegian Channel), but the shallow depth at Norway 

 is against this. 



Rhachotropis Helleri is recorded by Stebbing ("Tierreich") from 

 the Arctic Ocean, N.Atlantic, North Sea and Skager Rak 94 — 188 m.; 

 but this distribution is not certain, as it has been included earlier 

 under R. macropus G. O. Sars (teste Sars "Account", p. 427). Sars 

 writes (I.e.) regarding R. Helleri: "I have met with this species not 

 unfrequently in several places both off the south and west coasts of 

 Norwa}' in depths ranging from 50 to 100 fathoms. According to 

 Boeck it extends northwards to the Lofoten-Isles, but it has not yet 

 been observed off the Finnmarken coast. — About the distribution 

 of the species, it is at present somewhat difficult to state anything 



with certainty, as most probably R. macropus G. O. Sars has 



been generally confounded with it. To judge from its occurrence 

 off the coast of Norway, it would seem on the whole to be a more 

 southern form than the former". 



Rocinela maculata can only W4th doubt be referred to the Green- 

 land fauna, as the two specimens, which have led to the species 

 being recorded as from Greenland, were bought from a dealer in 

 Hamburg (Bovallius, New or imperfectly known Isopods, Bihang 

 Kgl.Svenska Vet.Akad.s Handl., vol.10, No. 11, 1885, p. 10) and thus 

 perhaps bear a wrong locality; otherwise it is only known from 

 Vladivostok (Schiödte and Meinert, Naturh. Tidsskrift 3. R., vol. 12, 

 1879, p. 393). But, as H. J. Hansen also remarks (V. Grønland 1887, 

 p. 187), it is not altogether impossible, that it really occurs at Green- 

 land, since, as shown by the above lists, we now know not a few 

 species which occur both at Greenland and in the Pacific. 



Acanthoniscus typhlops is known from W. Greenland only from 

 S. of the ridge: 63°24' N., 53°10'W., 892 m. ("Tjalfe") and from the 

 cold area W. of Lofoten: 68°21'N., 1040' E., 457 fm., — 0.7 C. (Nor- 

 weg. North-Atlantic Exped.). The depth is thus almost the same in 



43* 



