31 



6. Leptognathia manea, G. 0. Sars. 



(PI. XIV, fig. 3). 

 Lepto;piat!na (?) manea; Gr. 0. Sars, 1. c. p. 44. 



Specific Characters. — 9 Body slender and elongated, more than 8 times 

 as long as it is broad, with the segments, marked oft by conspicuous constrictions, 

 posterior half slightly attenuated. Cephalosome of moderate size, with the side 

 edges regularly curved. First free segment of mesosome much larger than the 

 last one,- and somewhat dilated in front. Metasome equalling in length the last 

 2 segments of mesosome combined, and rather narrow, subcylindric in form, with 

 the terminal segment short and obtuse. Superior antennas with the 2nd joint much 

 shorter than the outer 2 combined. Chelipeds of moderate size, with the hand 

 scarcely dilated, oblong oval in form, and somewhat longer than the car- 

 pus, fingers shorter than the palm. The 3 anterior pairs of perieopoda exactly 

 alike both in size and structure, with the dactylus slender, setiform; the 3 posterior 

 pairs having the basal joint but slightly tumefied. Pleopoda wholly absent. Uro- 

 poda about half the length of the metasome, inner ramus Inarticulate, outer one 

 uniarticulate and scarcely half as long. Length 2.00 mm. 



Remarks. — The total absence (in the female) of pleopoda is a very 

 striking feature, which at first put me in some doubt as to the true generic 

 relation of this form. Having, however, on a closer examination, found it to 

 agree fairly well in all other essential characters with the species of the present 

 genus, I prefer to retain it in the genus Leptognathia, as a somewhat anoma- 

 lous species. 



Occurrence. — I have found this form in two widely separated places on 

 the Norwegian coast, viz., in Eidsfjord, west of Listerland, and at Apelvser, Nam- 

 dal. In both places it occurred in rather small numbers at depths of LOO — 150 

 fathoms. 



Gen. 5. TanaOpSiS, G. 0. Sars, n. 



Generic Characters. — Body comparatively robust, with the metasome 

 unusually large and composed of 6 well-defined segments. Eyes wanting. Su- 

 perior antennas in female distinctly 4-articulate. Oral parts very poorly developed. 

 Mandibles extremely small, and rudimentary, unarmed, and without a trace of 

 molar expansion. 1 st pair of maxilke with the masticatory lobe much curved. 

 Maxillipeds with the masticatory lobe very short, transverse, palp slender and 



