﻿CRUSTACEA MALACOSTRACA. II. -jc 



20. Paratanais Batei G. O. Sars. 



1884. Paratanais Batci G. O. Sars, Arch, for Math, og Xalnrv. 15. 7, p. 32. 

 ! 1896. _ _ _ Account Crust. Norw. Vol. II, p. 16, PI. VII. 



Occurrence. Tliis well-known species has not been taken \)\ the "Ingolf, but by two tra- 

 velling Zoologists. 



South of Iceland: Vestmannaeyjar, the littoral belt, Aug. 21, 1S99; i spec. Mag. B. Srenuindsen. 



The Fceroes: Vestnianhavn, 10 — 30 fm., June 2, 1899; i spec. Dr. Th. Mortensen. 



Distribution. /'. Bafei has been taken "in several places on the west coast of Norway, in 

 comparatively shallow water among the roots of Laniinariae" (G. ( ). Sar.s). Furthermore it is known 

 from some places on both sides of Scotland (T. vScott), from Falmouth and Plymouth (A. M. Normani, 

 Galway Bay in Ireland, 5—15 fm. (Tatter.sall), the Channel Islands (various authors), Saint-Jan-de-Luz 

 in vS. W. France, 2'/, fm. (Dollfus), finally from the r^Iediterranean at .Spezia, 6 — 10 fm. (G. O. Sarsi 

 and the Gulf of Naples, i — i' ., fm. (G. .Smith). 



P. Batei is decidedly a shallow water species, and its occurrence near South Iceland is of interest, 

 as some other Crustacea from the Lusitanicau area also occur there and have their limit of distri- 

 bution in north-western direction at that coast. 



Typhlotanais G. o. Sar.s. 



This genus hitherto comprised sixteen species, of which nine are known from Norwa\". Tlie 

 "Ingolf" material comprises nineteen species, but sixteen of these are new, while three are dealt with 

 in the work of Sars. The sixteen new species were all taken in depths ranging from 293 to 1870 

 fathoms, and the majority exclusively in depths from 690 to 1S70 fathoms, but even eleven of these 

 species were cajDtured only at a single station and seven among them I establish on a single spe- 

 cimen. Judging from these facts I am tolerabh' sure that several and proljably numerous species of 

 this genus living in the area explored by the "Ingolf are still imdiscovered, furthermore that the 

 depths of the oceans, from about 400 to at least 2000 fathoms, must contain a \'er\- large number of 

 species of this genus. 



Sars has published a good description of the genus according to the species seen by him. lUit 

 some of my new species differ conspicuously from that description in a few points. Thus, .some species 

 have the lateral margins of the thoracic segments very angular, while Sars said that the lateral con- 

 tours of the body are almost straight; T. iiiacrocrpiiala has the cephalothorax extremeh' large, the an- 

 tennuke much thicker and tlie cheke broader than allowable according to Sars' diagnosis, lint I have 

 found it impossible not onh' to separate a single form or some s])ecies as a new genus, but even to 

 divide my nineteen species into moderateh' well separated groups, l)ecause llic characteis are inter- 

 mingled in such a way and .so gradually developed in various species, that no natural division of any 

 value could be discovered. 



The scantiness of my material of the majority of the new species rendered it impossible to 

 examine their mouth-parts. P)Ut I have examined these ])arts of one of the species most aberrant 

 from the forms studied by Sars, viz. T. in-fi^nlaris n. sp., and found that they differed so little from 



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