94 



CRUSTACEA MALACOSTRACA. II. 



Thoracic segments as usually short, together even less than twice as long as the carapace. 

 Seventh segment with a large, obliquely triangular ventral proces.s. — Thoracic legs long and slender; 

 second (fig. 3d) and third pairs with the sixth joint almost half as long again as the fifth and scarcel\^ 

 longer than seventh with claw. Fifth pair with seventh joint plus claw considerably longer than sixth 

 joint, while in the two posterior pairs (fig. 3e) the difference in length between the same parts is 

 somewhat small. 



Abdomen (fig. 3 f) extremely long, about twice as long as the six thoracic segments combined ; 

 the five anterior segments each with an obliquely triangular ventral process, which is large on first 

 segment, and the processes decrease gradually in size from first to fifth segment, so that that of the 

 last-named segment is quite low. Pleopods long with extremely long setse. Sixth segment about as 

 long as the two preceding segments combined, posteriorly produced in a triangular, acute process. — 

 Uropods inserted before the middle of their segment and reaching somewhat beyond its end; endopod 

 three-jointed and last joint a little (fig.3g) or somewhat (fig. 3f) shorter than the two others combined; 

 exopod one-jointed, very slender, slightly longer than the first joint of the endopod. 



Length i — i.i '""'. 



Remarks. The female and subadult male of L. brcvireiiiis are easily distinguished from all 

 other species of the genus excepting L. crassa n. sp. by the thick body, the short uropods, etc. By the 

 rather slender carpus and the .slender chela with its proportionately long hand it can be separated 

 from L. crassa. The adult male was hitherto unknown. 



Occurrence. This species has been taken by the "Ingolf at fifteen stations. 



Davis Strait: St. 24: Lat. 63°o6' N., Long. 56° 00' W., iiggfm., temp. 2.4°; 2 spec. 



— — St. 36; Lat. 6i°5o' N., Long. 56° 21' W., 1435 fm., temp. 1.5°; 20 spec, 



2 of which are adult males. 

 Lat. 59° 12' N., Long. 51° 05' W., 1870 fm., temp. 1.3°; 6 spec. 

 Lat. 62°o6' N., Long. 19° 00' W., 1041 fm., temp. 3.1°; i spec. 

 Lat. 63° 22' N., Long. 6° 58' W., 679 fm., temp, -f- 0.6° ; 



large number of specimens. 

 St. 139: Lat. 63° 36' N., Long. 7°3o'W., 702 fm., temp. -f- 0.6° ; 



large number of specimens. 

 St. 105: Lat. 65° 34' N., Long. 7°3i'W., 762 fm., temp. -^ 0.8° ; 4 spec. 

 St. 103: Lat. 66° 23' N., Long. 8°52'W., 579 fm., temp. -;- 0.6° ; i spec. 

 St. 102: Lat. 66° 23' N., Long. 10° 26' W., 750 fm., temp. -^0.9°; ab. 30 spec. 

 St. loi: Lat. 66° 23' N., Long. 12° 05' W., 537 fm., temp. -^0.7°; 8 spec, 



one of which is an adult male. 



vSt. 125: Lat. 68° 08' N., Long. 16° 02' W., 729 fm., temp. -^0.8°; 8 spec. 



North-East of Iceland: St. 120: Lat. 67°29' N., Long. 11° 32' W., 885 fm., temp. -f- 1.0°; 6 spec. 



— - — St. 119: Lat. 67° 53' N., Long. 10° 19' W., 1010 fm., temp. -=- 1.0°; 33 spec. 



South of Jan Mayen: St. 118: Lat. 68°27' N., Long. 8°2o'W., 1060 fm., temp. -^ 1.0°; i spec. 



— - - — St. 117: Lat. 69° 13' N., Long. 8°23'W., 1003 fm., temp. -=- 1.0° ; 



large number of specimens. 



South of Davis Strait: St. 38 

 South of Iceland: St. 64 



North of the Fteroes: St. 141 



East of Iceland: 



North of Iceland: 



