23 



the metasome, as also by the much less strong chelipeds, and the somewhat 

 different structure of the uropoda. It is also very inferior in size. 



Occurrence. — I have found this form occasionally in several places, both 

 on the south and west coasts of Norway, in depths ranging from 50 to 150 fathoms. 

 The most northern place where I have met with it, is Kvalo on the Nordland coast. 



6. Typhlotanais tenuieornis, G. 0. Sars. 



(PL X, fig. 3). 

 Typhlotanais tenuieornis, G. 0. Sai-s, 1. o. p. 37. 



Specific Characters. — Q. Body very slender and elongated, more than 

 8 times as long as it is broad, with the cephalosome shorter than the first 2 

 segments of mesosome combined, and slightly narrowed in front. 1st free seg- 

 ment of mesosome a little shorter than the last one, the others regularly 

 quadrate, being fuliy as long as they are broad. Metasome shorter than the last 



2 segments of mesosome combined. Superior antennas attaining the length of 

 the cephaloscme, unusually narrow, with the basal joint longer than the other 2 

 combined. Inferior antennae, with the 3rd joint of the peduncle armed below 

 with 2 recurved denticles. Chelipeds of moderate size, hand rather elongated, 

 exceeding in length the carpus, fingers about the length of the' palm. The first 



3 pairs of pereiopod;'. rather slender, and each having a long and slender seta 

 springing off f.'om the ischial joint; the 3 posterior pairs much more strongly 

 built, with the basal joint rather tumefied, and the carpal joint forming inside 

 a rounded expansion. Uropoda very short, both rami uniarticulate, linear, 

 unequal, the inner one being almost twice as long as the outer. Length 1.75 mm. 



RemarJcs. — This form may be at once recognized by the unusually narrow 

 superior antennae, and the long seta springing off from the ischial joint of the 3 

 anterior pairs of pereiopoda, as also by the structure of the uropoda. 



Occurrence. — I have met with this species in 3 different localities of 

 the Norwegian coast, lying rather widely distant from each other, viz., in Eidsfjord 

 west of Listerland, at Bekkervig south of Bergen, and at Kvalo on the Nordland 

 coast, the depth ranging from 60 to 120 fathoms. 



1. Typhlotanais brevieornis (Lilljeb.) 



(PI. XI, fig. 1). 

 Tanais brevieornis, Lilljeborg, 1. c. p. 15. 



Specific Characters. — Q. Body extremely slender and narrow, about 9 times 

 as long as it is broad, with the cephalosome gradually tapering in front. 1st 



