CRUSTACEA MALACOSTRACA. III. IO n 



of A. intermedia shows considerable variation in the relative length of first joint of the antennal flagel- 

 liim, and even some variation in the relative length of the distance between the tip of abdomen and 

 the end of the nropods. At all events my remarks and figures may, I hope, render the form easily 

 recognisable to some future Carcinologist who has a richer material at his disposal. 



Occurrence. Taken by the "Ingolf" at a single station. 



Davis Strait: Stat. 25: Lat. 63°3o' N., Long. 54°25' W., 582 fath., temp. 3-3°; 1 spec. 



Distribution. Only three specimens are known, viz. two from Hardanger Fjord, West Nor- 

 way, 60 — 100 fath. (G. O. Sars), while the third specimen has been taken midway between Norway and 

 Shetland in 58 or, more probably, 97 fath. (Zirwas). 



141. Astacilla intermedia Goodsir. 

 1841. Leachia intermedia Goodsir, Edinb. New Philos. Journ. Vol. XXXI, p. 309; PI. VI, figs. 1 — 3. 



(test Norman). 

 ! 1897. Astacilla a/finis G. O. Sars, Account, II, p. 90; PI. 37, fig. 2. 



The largest specimen, an ovigerous female, is 14-5 mm. The relative length of the joints in 

 its antennal flagella agrees nearly with Sars' figure, the first joint being at least half as long again 

 as the two other joints combined. 



But it may be noted that our Museum possesses 4 specimens of co-types of A . afjinis presented 

 by Sars; the largest of these specimens, a female with marsupium, measures 16-5 mm., is thus 3-5 mm. 

 longer than the length recorded by Sars, and in this specimen the two distal joints of the antennal 

 flagella combined are not shorter than first joint, thus showing that the character afforded by the rela- 

 tive length of the first joint is somewhat poor. 



Occurrence. Not taken by the "Ingolf, but by the "Thor" at a single place. 



South of Iceland: Lat. 63°i5' N., Long. 22°23' W., 114— 172 fath.; 6 spec. 



Distribution. At Norway in Trondhjem Fjord, 100 — 200 fath., and off Lofoten, 200 — 300 

 fath. (G. O. Sars). A specimen probably belonging to this species was taken in Skager Rak not far 

 from the Skaw, 70 fath. (H. J. Hansen). It has been recorded from Lat. 59°54'N., Long. o°n'E., 62 

 fath. (Zirwas); from Fair Island between Orkney and Shetland (T.Scott); from the Firth of Forth; at 

 Durham and off South-West Ireland, 100 — 200 fath. (Norman), finally from four places west of Ireland, 

 in from 120 to 199 fath. (Tattersall). 



142. Astacilla pusilla G. O. Sans. 

 1873. Arc fur us p/isil/us G. O. Sars, Forh. Vid. Selsk. Christiauia for 1872, p. 73. 

 ! 1897. Astacilla pusilla G. O. Sars, Account, II, p. 91 ; PI. 37, fig. 3. 



Sars has noted that the adult female scarcely exceeds 8 mm. in length; my two females with 

 marsupium are respectively 108 mm. and about 12 mm. long, but belong unquestionably to this species. 

 Occurrence. Not taken by the "Ingolf, but by the "Thor" at a single place. 

 South-West of the Faeroes: Lat. 6i°i5' N., Long. g°35' W., 463— 515 fath.; 2 spec. 

 Distribution. Hitherto only known from three places at West Norway: off Sognefjord, 

 209 fath. (G. O. Sars, 1886); Storeggen bank, and off Lofoten, 80—100 fath. (G. O. Sars, 1897). 



