﻿CRrSTACKA MALACO.STRACA. 33 



Adensamer, Senna), for the last-named species reall\- reft-r to the fornier, thongh it shonld be added 

 that we can by no means conclnde that the specimens referred by A. Mihie-Edwards li: Bonvier to 

 J/, bivnffica \-ar. triiuiinaua realh' belong even to J/, tdntiiiiana vSars (see below). 



M. bamtYica is known from the Shetlands and from there along the coasts of Great Britain and 

 Ireland (varions anthers), on tiie west coast of France and according to A. Milne-Edwards & Bonvier 

 it goes fnrther sonth to Madeira and past Cape Boyador to 25° 41' N. L. It is widely distribnted in 

 the Mediterranean: tiie Cyclades (Adensamer), and connnon in the Adriatic and fnrther west. In North 

 Enrope, it has been taken at Bohnslan (Goes), also along the whole west coast of Xorwav, on the east 

 coast at Vadso in \'aranger Fjord (G. O. Sars), in the west part of the ^lurman Sea, finalh' at 73' 34' 

 N. L., i7°2o'E. L. (Birnla). 



The species has been found rarely in so shallow water as 13 fm., at England (Bate, teste 

 A. ;\I.-Edw. & Bouv.) and in the Mediterranean; in the jMediterranean it has been taken several times 

 in 30 to 40 fm., but botii to the north and south it is most common in depths between 100 and 300 fm.: 

 the greatest depth I can mention with certainty for it is 691 fm. ('-Ingolf'), as it cannot be determined 

 whether the depth 750 fm. from the Gulf of Gascogne (Caullery) applies to this or the following .species. 



Remarks'. In 1882 Sars gave three .sj^ecies for Norway. Of these M. Rondelcfii Bell is 

 certainh' identical with M. baiiiffica Penn. (= M. nigosa Fabr.; Sars). Sars states of J/. Rondelcfii that 

 he has seen "three specimens all of relati\-ely very considerable size"; I have also seen two ver\- large 

 males from Norwa\- which agree well with Sar.s' descriptions and figures of this "species", but I tliink 

 ne\ertiieless tiiat the species is only based on characters which are found in \-ery large males or are 

 untrustworth)' for other rea.sons. The e\es are strikingly small, but I cannot say with Sars that the 

 circle of setae at the e\'e is wanting, as m\- specimens sliow at places a row of short bristles which 

 seem to have been torn or broken. The lack of a pair of spines on the 4"' abdominal segment (not 

 3'"'^, as Sars states) is too unimportant and also, according to A. Milne-Edwards &: Bonvier. not main- 

 tainable as a character even within il/. baiiifjica and the reduced dimension of the e\es seems to me 

 an age-character. My \-iew is also strengthened by the fact that Sars seems to have onh' 3 very large, 

 but no smaller, specimens of the "species". — M. tcuuimaiia G. O. Sars is on the other hand a well- 

 founded species, and on describing it later the chief differences between it and J/, haiiiffica will be 

 mentioned. It is tiierefore incorrect of A. Milne-Edwards & Bonvier — followed h\ se\'eral others — 

 in their various publications to inchule M. fcmiiiiKnia Sars as a variet\' connected witli the princii)al 

 form liy transitional stages, and it cannot be determined whether the\- ha\-e seen the real .1/. toiitimniia 

 or not. The specimen figured by these authors in igoo (PI. XXIX, fig. iS) must certainh- be a true 

 M. baiiiffica. to judge from the lack of submedian sjiines on the iiind margin of tlie scutum and the 

 form of tliis. 



All the specimens from tiie "Ingolt" are snuill to almost mediuui-si/i.-(l; llie largest, from St. 54, 

 is a male 53 mm. long, and tliere is a female 40 mm. long from the same station which had numerous 

 eggs and a number of newl\- hatclied xoete attached to the abdominal leg.s. 



■ Years after I hail written the text here I received Dr. .\])]iell<if s work liii Nov. 1906. This aiuhor rij;htly inaiu- 

 tains ^^. tintuimami G. O. S. without having observed its liest character however; on the other liand he retains .)/. rii^osii 

 G. O. ,S. as distinct from .If. bamffica \= M. Komh-letii BellL Withont lieing able to follow hini in this I may refer to his 

 account: I may aihl that I have thought it best to make no changes whatsoever in my own account. 



The Ingolf-Kxpeiiition. III. .'. 5 



