54 



CRUSTACEA MALACOSTRACA. II. 



distal marginal tooth; seventh joint proportionately long, together with the short and thin claw slightly 

 shorter than the sixth joint. 



Abdomen at the middle of the hind margin with a short, protruding plate (fig. 6h), and each 

 angle of the plate produced in a spiniform process; the distance between the end of each process and 

 the hind margin is slightly longer than the breadth of the plate. Uropods moderately long; endopod 

 two-jointed (fig. 6h), with the proximal joint a little longer than the distal and with some minute 

 spines along its inner margin; exopod a little shorter than the proximal joint of the endopod, two- 

 jointed, with the joints equal in length. 



Length of the single specimen 2.0 mm . 



Remarks. T. spinicauda is easily distinguished from all other species by the plate with its 

 two spines protruding from the end of abdomen; the uropods are also very characteristic. In several 

 features it is allied to T. finmarchicus G. O. S. 



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



Davis Strait: St 28: L,at 65 14' N., Long. 55 42' W., 420 fm., temp. 3.5; i spec. 



33. Typhlotanais grandis n. sp. 



(PI. V, figs. 7a~ 7 e.) 



Specimen without marsupium, probably an immature Male. Very large and 

 somewhat slender, scarcely six and a half times as long as broad, but especially fifth thoracic seg- 

 ment is a good deal more narrow than carapace or abdomen (fig. 7 a). Carapace large, slightly 

 longer than the two following segments combined and somewhat longer than broad; the lateral 

 margins posteriorly convex but their anterior two-thirds converge nearly regularly to the front angles; 

 the anterior end is a little more than half as broad as the carapace somewhat behind the middle; the 

 rostral process is broad, somewhate short, acute. 



Antennulse (fig. yb) a little shorter than the carapace. First joint slightly longer than the two 

 other joints combined, slightly more than two and a half times as long as deep and, seen from the 

 side, scarcely tapering, seen from above distinctly and regularly tapering from base to end. Second 

 joint a little deeper than long; third joint long, about three times as long as the second and its 

 proximal fourth distinctly thickened above; terminal setae about as long as third joint. - Antennae 

 of normal length and thickness; third joint scarcely expanded; fourth joint a little more than twice 

 as long as the penultimate joint; terminal setae a little longer than those of the antennulse. 



Chelipeds (fig. yb) moderately robust. Basal joint long with the posterior protuberance even 

 a little longer than deep, rounded behind, but its hind margin is somewhat distant from the front 

 lower angle of second thoracic segment; carpus as long as the basal joint, only twice as long as deep. 

 Chela somewhat longer than carpus, three times as long as broad, with the posterior margin straight; 

 movable finger as long as the front margin of the hand; fixed finger near the base conspicuously 

 broader than the movable and with a small tooth a little from the end of the incisive margin. 



Thoracic segments (fig. 73) increase much in length and decrease considerably in breadth from 

 second to fifth segment; sixth segment is slightly longer and a little broader than the fifth, much longer 



