<it>4 T\i;i': sK()(;si!i;i!(i 



Ih'scriptio)): — Sim- (". Cl.Ms 1S!M ;i, p. tin ,iii<l C. W . Mi i i i:i;, llKiC.;!, p. |(i|. 



Siipp/tinrntnri/ ih'scn'pfum: 1'' cm ale: — • 



Shell: — liiMiglii : Accdidiii" to ('. t'l.Al s l,r) — l,(i mm. Accdnliiifi; to ('<. \\ . Ali':i,l,i;i; 

 1.65 — l.S iniu. Acc(irilin<; ti) (!. H. Kowi-KH 1.4—1.7 mm. Tlic tcmalc iiivcstigaU'd l)v me 

 was 1,() mm. Ions,'. Tlio shape of tho shell was as (lesciiiird li\ (1. W. I\li"l,l.i:n. The suilacc ol 

 the shell was hare. The .selvage was a.s in ('. hiplmnt. The ylaiids alony the posterior margin 

 of the shell and the hinge were the same as in ( '. Inphmt. In other respects it agreid with 

 <;. \V. .MCl.LKu's account. 



The first antenna was similar to that of C. parvideMlaUt, hut the distal joints 

 on the specimen investigated by me were bare. 1 n addition this specimen had no small yellowish- 

 brown corpuscles in the first and second joints. 



S e c o n il a n t e n n a: — Similai- to that of ('. parindentaUt, but the armature on the 

 a-bristle was almost as powerful as that on the b-biistle. There was no c- or d-bristle. 



M audible: — The j) r o t o |) o d i t e and the e p i p o d i a 1 a j) p e n d a g e are 

 similar to those of C. Inphura. The e n d o p o d i t e is perhaps somewhat more elongated 

 than in the species just mentioned. Its first joint has only two bri.stles on the po.sterior side; 

 l>oth these bristles have short hairs; one of them corresponds in position and size t(j the lateial 

 one, the other to one of the three medial ones, of the corresponding bristles in C. lophura. it 

 is to be noted that in pi. VI, fig. 7, C. Claus, 1891 a, there are three bristles at the corre- 

 sponding place, one long one and two short ones. 



The maxilla, the fifth and sixth limbs, the furca and t Ji e rod- 

 shaped organ are similar to those of C. parridenfata. 



U p p e r 1 i ]): — The part between the combs is of about the same tvpe as in ni\- (ig. 4 

 of ('. Belgicae. The paragnates are similar to those of C. symmetrica. 



Synonynif. Remarks: — Besides the places given in the above H,st of synonyms C. hyalnphyUum is 



mentioned in the following pkces: G. S. Brady, 1902 a, p, 199 (= the same author, 1903, 

 pp. 337, 338, 339 and A. M. NOHMAX, 1905, p. 155) and G. H. FowLER, 1903, p. 121. These 

 statements are not accompanied by any verificatory information or figures. On account of 

 the great difficulty in determining with certainty the species of this group it did not seem to 

 me proper to include these statements in the list given above. 



C. hijalophyllum , Ch. Judav, 1906, p. 20 is certainly not identical with C. hyalophyllum 

 C. Claus. It is perhaps identical with the former author's C. magna; cf. p. 692 above. 



With regard to C. hyalophyllum, G. H. Fo\\ler, 1909 I refer to what is written on p. 565 

 above. I was unable to discover in the specimen investigated by me any lateial glands with 

 exits such as are shown in this writer's pi. XX, fig. 97. 



Habitat: — Antarctic Ocean: 



S. A. E., PI. station 64 b, lat.48"27' S., hmg. 42" 36' \\.; depth 2500—0 m.; 23. VI. 1902: 

 1 mature female; on slides, R. M. S. 



