﻿CKUSTACKA MAI.ACOSTRACA. 11. qc 



Distribution. Lilljeljorg established /.. /ii-,-7'iiciiiix on .specimens taken at P>olinslan, 50 — 60 

 fathoms, and at Molde (the western coast of Norway, at I.at. 62°45' N.), 40— 50 fathoms. Sars pos.ses.sed 

 it from Christiania Fjord, 20 — 60 fathoms, and from several ])laces on the South and West coasts of 

 Norwa\-, northwards to Kvalo, at Lat. 70^40' N. In iqio I mentioned it from two places in the Kattegat, 

 15 and 17 fathoms and from a place in Skager Rak, 125 fathoms. I^)esides the sjjecies has been taken 

 between Norwa\- and the Orkney's, 150 fathoms (Internat. Inveslig.), at some places on both sides of 

 Scotland, f. inst. near Aberdeen, 45 fathoms, and in I^och b'yne pelagicalh- in a vertical haul (T. .Scott), 

 furthermore off Northumberland (G. S. Brady], at Plymouth (A. M. Norman) and off West Ireland, 320 

 fathoms (Tattersall). 



The perusal of the preceding lines and of the "lugolf" stations shows the Ijathvmetrical occur- 

 rence to be extremely remarkable. In vain I have attempted to find any difference worth mentioning 

 between females from 1870 fathoms in the warm area, from 1003 fathoms in the cold area and Nor- 

 wegian specimens from 20 — 60 fatlioms presented l.)\' Sars. To begin with I had believed that the 

 specimens from tlie "Ingolf" belonged to a species different from the I..bn_-;'irriiiis occurring at Den- 

 mark and Norwax', bin after a detailed examination I was forced to abandon that opinion, as I could 

 not find any other difference than that the uropods seem to be a little longer and sixth abdominal 

 segment a little less highly vaulted in the Norwegian specimens (fig. 3c) than in specimens from the 

 deepest "Ingolf" stations. 



60. Leptognathia crassa n. sp. 



(PI. IX, figs. 4a— 40 



P'emale (without marsupium). Bod}- unconunonly robust (fig. 4a), from four and a half to 

 slightly more than fi\'e times as long as broad, seen from al)ove subcylindrical, with the abdomen 

 slighth' narrower than the thorax and the lateral margins of the thoracic segments slighlU- con\-ex. 

 — Carapace a little shorter tlian the two following segments comljined (fig. 4a), slightl)' broader than 

 long and at the anterior end about half as broad as a little from tlu- base; frontal process feebly 

 developed, short, broad, acute. 



Antennuke (fig. 4 b) only a little shorter than the carapace. P'irst joint a little shorter than 

 the other joints combined, robust, not fully twice as long as deep and somewhat produced above; 

 second joint thick, distalh' much produced above, with the upper margin as huig as the depth of tiie 

 first joint; third joint with the upper margin very short; fourth joint slightly shorter than the upper 

 margin of the second, slender and subc\-lindrical, with the terminal set;e somewhat long. .\ntenn;e 

 with fourth and fifth joints completely fused, and this fourth joint onl\- half as long again as the 

 penultimate joint. 



Chelipeds robu.st (fig. 4b). Ba.sal joint thick, with the free hind nuu-gin of the posterior pro- 

 tuberance reaching to second thoracic segment. Carpus somewliat longer than the basal joint, o\-ate, 

 .somewhat or considerably less than twice as long as deep, with the free lower margin distinctly, the 

 upper margin strongly convex. Chela slightly longer than the carpu.s. somewhat more than twice as 

 long as broad; the hand with two strong setie on the posterior margin at the ba.se of tlie movable 

 finger and its anterior nuugin onl\- a little longer than the nunable finger. 



