﻿CRUSTACEA ."\IAI,ACOSTRACA. II. .c 



claw less than half as l(m^!4- as sixth joint. Sixth and st'vcnlh pairs (fig-, ^.ci nnicli shorter than the 

 anterior pairs; second joint abont three and a half times as lon<j as broad; fourth and fifth joints verv 

 moderately thickened towards their end, sixth joint somewliat lon<4 and slender, twice as lon<«- as 

 seventh joint with claw. 



Abdomen proportionately long, in the contracted specimen (fig. .4 a) even slightlv .shorter than 

 the three posterior thoracic segments combined. — Uropods (fig.s. 4a and 4d) long; endopod two- 

 jointed, with first joint .somewhat longer than second; exopod slightly shorter than the endopod, two- 

 jointed, with the proximal joint about half as long as the distal. 



Length of the largest specimen 1.50'"'", of the contracted specimen (fig. .^a) 1.19""". 



Immature Male. A single specimen, only i.o""" long, is at hand, and its most imjjortant 

 parts are rendered in figs. 4e — 4g. vSome of the differences between this specimen and the two above- 

 described females are due to sex, other differences probably to age. The antennuhe are considerablv 

 thicker than in the female; first joint, which is as long as the two other joints combined, is onl\- 

 three times as long as deep and tapers slightly towards the end; .second joint is conspicuouslv less 

 than twice as long as deep, third joint more than twice as long as the second. — Antennie with fourth 

 joint distinctly less than twice as long as the penultimate joint. — The chela is slightly thicker tlian 

 in the female with the hand conspicuously less elongate in proportion to the length of the movable 

 finger. — The anterior pairs of legs are a little thicker in proijortion to length than in the larger 

 female. ITropods with the rami equal in length. 



Remarks. T. exiiiiiifs is easily distinguished from all other species by its ver\- slender chel- 

 ipeds with the \-ery elongate cheUe and the hand very long in proportion to the fingers. In all other 

 features it is allied to T. pciiicillaliis G. O. S., differing only in various minor particulars, among which 

 the most conspicuous is the fact, that in T. pr>iicill(itiis the exopod of the uropods (fig. 5c) reaches 

 scarceh' or slightl_\- be\ond the middle of the second joint of tlie endopod. 



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



South-West of Iceland: vSt. 78: Lat. 60^37' N., Long. 27- 52' W., 799 fm., temp. 4.5°; 3 spec. 



27. Typhlotanais penicillatus (i. O. vSars. 

 (PI. IV, figs. 5a-5d.) 



1881. TyplilDfaiiais pt)iieill<ittis G. O. Sars, Arch, for Math. (.)g Natur\-. I!. 7, p. 39. 

 ! 1896. — — — Account Crust. Norway, \'ol. II, p. 25, PI. XI. fig. 3. 



The ■'Ingolf" specimens agree well with Sars' descrijition and figures of this sj)ecics excepting 

 that the sette on the chelipeds are considerabh' longer, but that niav be due to an accident or a slight 

 error. Furthermore vSars stated that the exopod of the uropods is one-jointed, while it is two-jointed 

 in ni\- specimeu.s, but the articulation between the two joints is not always reall\' distinct. 



7". pniii-illaliis is closely allied to T. cxiiiiiiis \\. sp., L)ut differs opeeialh' in luu'ing the clieli- 

 peds shorter and much thicker and in having the exopod of the uropods (fig. 5c) conspicuously 

 shorter than the endo])od; furthermore the antenuuke, antenna- and anterior thoracic legs (fig. 5a) are 

 in my largest .specimens conspicuously shorter and thicker than in T. ixiiiiiiis\ third pair of legs with 



