60 S. I. Smith — Crustaceans of the Atlantic Coast. 



The subdorsal carinae are distinct and distinctly, and pretty regu- 

 larly, dentate throughout. Tlie superior lateral carinje are better 

 marked than in the last species and terminate in an acute and prom- 

 inent tooth at the outer margin of the orbit, and just back of this 

 there is a distinct tooth in the carina itself. The elaborate sculptur- 

 ing of the dorsal surface of the abdomen, though apparently after 

 the same pattern as in septerncarinata, is much more distinct and 

 conspicuous. 



The telson, in all the specimens seen, reaches to or slightly beyond 

 the tips of the inner lamellse of the uropods. The distal portion is a 

 little more slender than in the last species and the dorsal aculei ap- 

 pear slightly more conspicuous. In adult specimens, the extremity 

 terminates in an acute tip mucli longer than its breadth at base, 

 where it is separated from the body of the telson by an emargination 

 each side, from each of which arise two spines, a large inner one with 

 a minute one outside at its base ; this is the structure in the two per- 

 fect adult specimens examined, the larger of the two females from 

 the coast of Norway (Plate XI, figures 6i, 6c) and a smaller individ- 

 ual of the same sex from the Gulf of Maine, 1877, (Plate XI, figure 

 7). In a very small specimen, only 16'"'" in length, from St. George's 

 Banks (Plate XI, figure 8), and in a still smaller specimen from Le 

 Have Bank, the extremity of the telson is acutely triangular and 

 armed each side with three slender spines of nearly equal length, — 

 evidently an approach to the early stages of the young. 



St. George's Banks !, 60 fathoms, shells and sand, 1872, — one young 

 specimen 16""° in length. Gulf of Maine !, about east-southeast from 

 Cape Sable, Nova Scotia, latitude 42° 40' north, longitude 66° 58' 

 west, 112 fathoms, gravel, August 20, 1877, — one female 36™"' in 

 leno-th. Le Have Bank !, 60 fathoms, coarse gravel, stones and 

 sponges, September 12, 1872,— a female, 47'"'" in length, carrying 

 eo-o-s, and a small specimen badly mutilated. Lofoten Islands!, coast 

 of Norway (G. O. Sars), — two fine females, 62 and 53""" in length. 



I take great pleasure in associating the name of Professor G. O. 

 Sars with this species. 



Pontophilns Norvegicus m. Sars. 



" Crangon Norvegicus M. Sars, Beretning om en zoologisk Reise ved Kysten af 

 Romsdals Amt i Nyt Magazin f. Naturv., 11 B., 1861, p. 8" (Sars).— Goes, (Ef- 

 versight af Kongl. Vetenskaps-Akademiens Forhandlingar, Stockholm, 1863, p. 

 173 (13). 



Fontophiliis Norvegicus M. Sars, Christiania Yidenskabs-Selskabs Forhandlinger, 

 18G1, p. 183 ; Bidrag til Kundskab om Christianiafjordens Fauna (extr. Nyt Mag- 



