CRUSTACEA MALACOSTRACA. IV. 63 



55. Diastylis echinata Bate. 



1865. Diastylis echinata Bate, Ann. Mag. Nat. Hist. Ser. 3, Vol. XV, p. Si, PI. I, tig. t. 

 11909. G. O. Sars, Account, III, p. 57, PI. XLIII. 



1913. — cchinatus Stebbing, Das Tierreich, 39. Lief. p. 104. 



It may be mentioned that the Epicarid Cumoechus iusi«itis H. J. H. was found in the marsupium of 

 two specimens from Lat. 6i°07' N., Long. 9°3o' W. 



Occurrence. Taken by the "Ingolf" at two stations. 



Davis Strait: Stat. 32: Lat. 66°35' N., Dong. 563N' \V., 318 fath., temp. 3. 9 ; 3 specimens. 

 Stat. 25: Pat. 63 : ;o' N., Dong. 54°25' W., 582 fath., temp. 3.3 ; 3 specimens. 



Besides captured by the "Thor" at 3 places within the "Ingolf" area. 



South of Iceland: Dat. 63°i5' N., Long. 22^23' W., 114 — 172 fath.; 1 specimen. 



South-West of the Faeroes: Dat. 6i°i5' N., Dong. 9 "35' W., 463 — 515 fath.; 38 specimens. 



Lat. 6D07' N., Pong. 9°3o' W., 443 fath.; 19 specimens. 



Distribution. Taken some few times in Skager Rak in depths from no to 350 fath. (Meinert, 

 H. J. Hansen). At Norway distributed along the coast from Christiania Fjord to Hasvig in West Finmark, 

 100 to 417 fath. (G. O. Sars). Zimmer recorded it from north of Spitzbergen, Dat. 8i°2o' N., Dong. 20°3o' E., 

 531 fath., which is somewhat surprising. Sars recorded it from off Norway in the cold area at two stations, 

 viz. Dat. 66°4i'N., Long. 6°59' E., 350 fath., temp. -^ 0.9 , and Pat. 63°io' N., Pong. 5°o' E., 417 fath., 

 temp. ~ i.o°; Bates' type was taken off Shetland, and Norman recorded it from a place south-east of the 

 Faeroes: Pat. 6o°io' N., Pong. 5°59' W., 550 fath.; Caiman mentions it from a place west of Ireland, 199 

 fath. 1 



56. Diastylis longicaudata Bonnier. 

 (PI. IV, fig. 5 a). 



11896. Leptostylis longicaudata Bonnier, Ann. I'Univers. Lyon, vol. XXVI, p. 557, PI. XXX, fig. 2 a — o. 

 1913. Adiastylis longicaudatus Stebbing, Das Tierreich, 39. Lief., p. 115. 



Bonnier established this species on an immature female a little less than 10 mm. long. Three specimens 

 from a single locality I refer to this form, though they differ in some particulars from his description. The 

 two largest specimens are females with the marsupium half developed and measuring S.i mm. 



The carapace agrees in outline completely with Bonnier's figure, and it is, as described by him, 

 studded with innumerable denticles which, for the rest, differ considerably in size; the anterior half of the 

 lateral margin behind pseudorostrum is finely serrated with obtuse teeth, and this serration is partly indicated 

 in Bonnier's figure. The shape of tiie thoracic segments and abdomen, the antennuke, the third pair of 

 maxillipeds with a thick spine on the lower side of merus, the small but very distinct, hiartieulated exopods 



1 In »Fauna Arctica« Zimmer refers D.spinosa Norman (1869) as a synonym to D. echinata, which is wrong {D tpinosa 

 is the male of D. Rathkii), but the result is, that in his list of distribution the reference to Norman in r86g and to Metzger, 

 Mobius and Ehrenbaum on the occurrence of D. echinata in the North Sea must be cancelled. That Zimmer's statement: adanische 

 Gewasser, 550 F. (Norman t8q4)« is wrong is easily seen, as no such depth is to be found near Denmark, but he lias design- 

 ated Norman's locality, the Faeroc Channel is danische Gewasser. « 



