54!) TACK SKOOSMKllfi 



fHCfiualii and I'liilotitedts ( I'll.} ijlobasa; rt. p. 14(» ol this tivatisi') is in liivinir ol llic liisl altci- 

 iiativo. Kiir tliis reason 1 liavc not ailoptiMl the statvincnt as to Icniitli aivcn l)y (J. O. Sahs. 

 I givo for what it is worth (!.<>. Saks's inlnrinatii)ii as to llic siicll: ., alt ituiliiir luaxiiiia . . .ante 

 nuHliuin sitiv" anil the statenionts that ..antennae, pedes niamlilmhires et nia.xiliae structura h-re 

 exactaeadeniaein .1. xorcfgfj'm" and ..laminae postal)(h)niinales breves unguibus 5 . . . arniatae". 



C. -v. Br.u.u ../... The description of this .species given by C. S. l?l!\l>Y and A. M. NOHMAN, 1896, p. CtM. 



J ' ' ' , .. is onlv a transhition of Sahs's original description into Knylish. Two figures of tlie shell, one 

 apfrirs representing tlie side view, the other the shell as seen from below, are added by thes(> authors, 



pi. LII, figs. 18. l!i. The figures were drawn from a specimen (if which it is stated that it was 

 , .kindly given to us by the describer", i. e. presumably the .same specimen as is re-described 

 and reproduced bv me above. Of these two figures no. 18, that of the shell seen Irnm the side. 

 shows a fairly close resemblance to fig. 1 given by me above, the other figure, the shell seen from 

 below, differs, on the other hand, very considerably from the corresponding figure given by me. 

 This is perhaps due to the superficial way in which these writers have proceeded. It does 

 not seem impossible, however, that there has been a confusion between the figures and that pi. LII, 

 fig. 17, A. elliptica, the shell seen from below, represents A. abyssicola, while fig. 19 belongs to A. 

 dliptica. At any rate, if this change were carried out, there would be considerably closer agreement 

 between the figures given by BliAl lY and Norman and the forms that are actually found in nature. 



Distribution: — Lofoten, Norway; depth, 220 m. (Sars 1870). Between Finmark 

 and Beeren Island (Station 290 of the Norwegian North -Atlantic Expedition 

 1876—1878); depth, 345 m. (Sars 1886). 



Type specimen of the re-description on .slides in the Chr. Z. M. 



Genus Cyclasterope G. S. Brady, 



Cydasterope, G. S. Brady, 1897. Asterope, G. W. MtlLLER, 1890 and 1912. Cylindro- 

 leberis, G. W. MtJLLER, 1906 b. 



Diagnosis: — Shell: — This varies very much in type. In most cases, but not always, 

 however, it has a well-marked posterior corner. The rostral incisur is comparatively deep and 

 narrow. The surface of the shell has no sharply projecting sculpture; it is almost smooth. It 

 is strongly calciferous. The forms are relatively large. 



First antenna: — Disto-posteriorly on the fourth joint there are more than two 

 bristles, some of which are rather long. The sensory bristle of the fifth joint is very powerful 

 in the male and has a very large number of accessory sensorial filaments on the medial side of 

 the bristle, arranged in numerous more or less distinct stages. This antenna has seven bristles 

 distally, both the d- and e-bristles are developed; the a-bristle is claw-shaped; the c- and f- bristles 

 are much lengthened in the male. 



