CRUSTACEA MALACOSTRACA. II. 6 1 



the specimens from 1435 fathoms in the warm area and specimens from depths ranging between 495 

 and 1060 fathoms in the cold area, and must therefore refer them all to the same species. 



Occurrence. T.mixtus has been taken by the "Ingolf" at ten deep-sea stations, with a single 

 exception in the cold area. 



Davis Strait: St. 36: Lat 6i5o' N., Long. 56 21' W., 14351., temp. 1.5; 6 spec. 



North of the Faeroes: 81.141: Lat. 63 22' N., Long. 658'W., 679 fin., temp. 0.6; 8 spec. 



81.139: Lat. 63 36' N., Long. 73o'W., 702 fm., temp. 0.6; 8 spec. 



East of Iceland: St. 102: Lat. 66 23' N., Long. io26' W., 750 fm., temp. 0.9; 4 spec. 



North of Iceland: 81.124: Lat. 67 40' N., Long. 15 40' W., 495 fm., temp. 0.6; i spec. 



81.125: Lat. 68 08' N., Long. i6o2 ( W., 729 fm., temp. -0.8; 6 spec. 



North-East of Iceland: St. 120: Lat 67 29' N., Long. n32' W., 885 fm., temp. - 1.0; i spec. 



St. 119: Lat 67 53' N., Long. ioi9' W., loiofm., temp. 1.0; 17 spec. 



South of Jan Mayen: St. 118: Lat 68 27' N., Long. 8 20' W., 1060 fm., temp. 1.0; 4 spec. 



St. 117: Lat.69i3'N., Long. 8 23' W., 1003 fm., temp. 1.0; 13 spec. 



38. Typhlotanais cornutus G. O. Sars. 



1879. Paratanais cornutus G. O. Sars, Arch, for Math, og Naturv. B. 4, p. 431. 



1885. Typhlotanais G. O. Sars, Norske Nordhavs-Exp., Crust. I, p. 83, PI. VII, figs. 2938. 



1896. G. O. Sars, Account Crust Norway, Vol. II, p. 24, PI. XI, fig. 2. 



Sars' figures and description in his last-named work are on the whole good, but it may be 

 useful to enumerate a number of features, by the combination of which this species is separated from 

 any other form. 



T. cornutus is thicker than most species, being about four and a half times as long as broad. 

 The carapace is a little or somewhat shorter than the three following segments combined. Antennulse 

 moderately slender, scarcely as long as the carapace, with the longest terminal setae decidedly longer 

 than the two distal joints combined. Chelipeds with carpus and chela equal in length and somewhat 

 short in proportion to breadth; the movable finger a good deal shorter than the front margin of the 

 hand. -- Second thoracic segment half or less than half as long as third segment, which is conspi- 

 cuously shorter than the fourth. Second pair of thoracic legs somewhat slender; sixth joint conspi- 

 cuously longer than the seventh with claw, with its distal posterior seta somewhat long. Second joint 

 of the posterior pairs of legs moderately thick. Uropods with both rami two-jointed and the exopod 

 conspicuously shorter than the endopod. 



Among the characters pointed out by Sars that drawn from the well-developed rostrum seems 

 to me less valuable, and it may be stated here that I have some co-types of Sars presented by him- 

 self. In specimens with the ventral side of second thoracic segment convex a moderately small or 

 somewhat large process projects downwards and much forwards, originating somewhat behind the 

 front end of the segment. 



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



Davis Strait: 81.32: Lat. 66 35' N., Long. 56 38' W., 318 fm., temp. 3.9; 42 spec. 



