.Vilt TACK SK(H;SltKl{i; 



Althoiijili it is (Hiitf iiii|)()ssil)lc to idciititN' ii sjiccics of this groiiji imicK l)\ tlic urniTJil 

 sliapo and appcaramc nl the slicll, a fact that is clcaiU' sluiwii in I Ins treatise. siil)se(|\ieiit 

 writtTs have, obviously witlumt aiiv re-oxaiiunation nl IVMUD's typo-sporiinon, .suctTeded, as 

 ill tlio case of .-1. tnex (A. .M. N'l'liM W), not oiiIn- in identilx inu' forms investij^'ated liv thcnisolves 

 witlt this spei'ios of ]iAllih"s, hut also m synonyuu/.in^ with it lorins deserilx'd in a more or less 

 unidentitiaWo manner by other writers and ohviouslv not invostif^ated l)y themselves. This 

 can only l)e e.\|)lained as being due to these writer's ilelieient knowledec ol this fjciiiis. 



I'l/priiiitia oblotiga GlU lUO, from the Adriatic Sea, has, according to tlie ori^'inal de- 

 scri])tion and figures, a shell that agrees verv eloselv both in shape and length — J, 55 mm. — 

 with \V. JiAIUli's Ci/pridina Marine, 'i'he limbs and tiie fiirca of this species are described, 

 but .so incompletely that it is impossible to identify it with certainty, but still this form may, 

 although hesitatingly, lie referred to the same group of the genus Asterope as the form of 

 Baihd's has been with a reservation referred to above. Without going i.ito details as to the 

 pecuharities in GhI'HE's description and figures that are obviously due to mistakes in obser- 

 vation on the part of this writer, the following characters that appear to distinguish this species 

 may be mentioned here: The m a n d i b 1 e has no bristles at all at the middle of the 

 ilorsal side of the basale. The sixth 1 i m b has only fifteen posterior ventral bristles. 

 The s e V e n t ii 1 i m b has eleven bristles, of which six are situated distally, three on each 

 side, and five somewhat more proximally, four on one side and only one on the other. 



G. S. Brady's Cylmdroleberis Mariae, 1868 b, which was found off Scotland and in the English 

 Channel, differs exceedingly with regard to its shell from this species of Baird's: ,, Carapace 

 as seen from the side, oblong-elliptical, more than twice as long as high, rather higher in front 

 than behind." The shell is 2,3mm. long. Bhadv's description and figures of the limbs and the 

 f u r c a are very incomplete and obviously incorrect, so I shall not discuss them at any length 

 here; although they thus do not permit of certain identification they clearly show that the 

 species in question certainly belongs to the same group of the genus dealt with here as that to 

 which the above forms of Baird's and Grube's have been referred. The difference in the 

 shape of the shell from the former species is clearly due to the fact that Brauy has described 

 and drawn a mature male while, as has been shown above, Baiud had a mature female or a 

 larva. The rather strongly marked dimorphism in the shape of the shell has not, if we are 

 to judge from the text, been noticed by Brady, a fact that did not, however, prevent this author 

 from identifv'ing the form examined by him with that of Baikii. 



G. 0. Sars, 1887, states that the species Asterope oblonga (E. GRUBE) was found at four 

 localities in the Mediterranean and in the Bay of Biscav*. Both the male and the female are 

 described. This form certainly belongs to the Grimaldi group of this genus. The shape of the 

 shell is that which is characteristic of this group. Length, 2,07 mm., J; IJ nim., % 

 Second antenna: The endopodite has a very short bristle distally on the second joint. 

 Mandible: At about the middle of the dorsal .side of the second protopodite joint there 

 is a single bristle, which is about as long as the dorsal side of this joint. The exopodite is very 



* I applied to Pfofessor Sars for Ihu spedmens mcutioned in order to r(;-e.\ari.iiu' lliciji. Iml was inl<iniifd lliat 

 unfortunately they liad all been lost beyond any hope of recovery. 



