CRfSTACKA MALACOSTRACA III. 31 



(fig. 5 a, f/>, f/>] from the basal joint of the legs. Furthermore a small, very oblong epimeral process 

 (fig. 5 a, </) is seen at the l>ottom of the cleft between the two lappets of fourth segment 



Most of the upper surface of the animals, especially on the thoracic segments, is finely granu- 

 lated, and besides in most of the smaller and in some of the subadult or adult specimens clothed with 

 fine hairs, generally short, but some long hairs may be interspersed. When hairs are scarce or wanting 

 they have probably been lost 



Among my rich material not a single female with the ntarsupium fully developed is found. 

 The largest female (from the "IngolP Stat 35) measures 8-6 mm. from the tip of the rostrum to the 

 middle of the hind margin of the abdomen; the largest male (from the same station) is 7-2 mm. 

 Occurrence. Taken by the "IngolF at six stations. 



Davis Strait: Stat 32: Lat 6635' N., Long. 56*38' W., 318 fath., temp. 3.9; 11 spec. 

 Stat 35: Lat 65 16' N., Long. 55*05' W., 362 fath., temp. 3-6; 11 spec 

 Stat 28: Lat 65*14' N., Long. 5542' W., 420 fath., temp. 3-5; 2 spec. 

 Stat 27: Lat 6454 ( N., Long. 55*10' W., 393 fath., temp. 3-8; i spec 

 Stat 25: Lat 63*30' N., Long. 5425' W., 582 fath., temp. 3-3; 2 spec. 

 West of North Iceland: Stat 96: Lat 65*24' N n Long. 29*00' W., 735 fath., temp. 1-2; i spec. 



Besides it has been gathered three times in Davis Strait, viz.: Lat 65*45' N., Long. 543o' W., 

 about 200 fath. (Stephensen); Lat 65*36' N., Long. 56*24' W., 349 fath., temp. 3-2* (by Admiral Wandel), 

 and Lat 63*24' N., Long. 53*10' W., 473 fath. (Stephensen). 



Distribution. Storeggen bank, off Molde, Norway, 400 fath.; besides off the coast of Nord- 

 land and Finmark, 100 to 150 fath. (G. O. Sars). 



8. lanira spinosa Harger. 



1879, Janira spinosa Harger, Proc U. S. Nat Mus., Vol. II, p. 158. 



! 1880. Harger, Rep. U. S. Comm. Fish and Fisheries, Vol. 6, p. 323; PI. II, fig. 10. 



! 1881. lanthf sfirciosa Bovallius, Bihang till K. Sv. Vet Akad. Handl., Vol. 6, No. 4, p. 5; Pis. I III. 



This species is easily separated from the preceding forms by the conspicuous pair of dorsal 

 submediau processes on each thoracic segment The surface of the body generally more or less hairy, 

 but the hairs are much less numerous than in some specimens of /. laciniata. The antero-lateral 

 plates of the head are lanceolate, acute, and from not fully twice to nearly three times as long as broad. 

 Kpimeral processes are completely wanting at the lateral lappets of the three anterior thoracic segments; 

 between the two lappets of fourth segment sometimes a minute, triangular epimeral tubercle may be 

 seen. At the base of the hind margin of the lappets of the three posterior segments a small sub- 

 triangular epimeral process is always visible, and these processes are seen on Bovallius' fig. i as teeth 

 incorrectly not marked off by a suture, and at least those at fifth and sixth segments are distinctly a 

 little longer than according to that figure. 



Harger established /. spinosa on two small females, 8 mm. long, and published a single figure, 

 \i/_, the animal from above. Bovallius established lanthr sprciosa on a very large male, measuring 

 21-5 mm. from the tip of the rostrum to the end of abdomen (the end of its processes, I suppose); he 



