As most of the species of this genus ■ — with but very few exceptions — have been 

 observed only once as jet, no conclusions can be drawn with regard to the bathymetric vancre 

 in relation to the geographical distribution. 



I. Alepas moi-nla n. sp. PI. IV, fig. 9 — 12. 



Capitulum globular, its surface with numerous tubercles. No scuta. Orifice small, not 

 protuberant. Peduncle more than half as long as the capitulum. Inner rami of the 5"^ and 6'h 

 cirrus as strongly developed as the outer rami. 



Capitulum (PI. IV, fig. 9) globular, with the carinal edge somewhat projecting like a 

 crest, entirely destitute of valves, but with the thick chitinous envelope showing large tubercles 

 all over its surface, giving the animal a certain resemblance to the fruit of the mulberry. The 

 colour of the specimens conserved in alcohol is a greyish yellow, the peduncle being brownish. 

 Indistinct brown or reddish transverse lines run over the surface of the capitulum. Orifice small, 

 hardly protuberant, its edges sinuous. 



Peduncle rather long, narrower than the capitulum, into which it insensibly blends; 

 its surface very uneven, partly from being wrinkled, partly in consequence of the chitinous 

 envelope bearing tubercles, which are however smaller than those of the capitulum. .Surface of 

 attachment not very wide. 



Size. The length of the capitulum and the peduncle together is 10,5 mm. in one of the 

 larger specimens, the capitulum alone measuring 6,5, the peduncle 4 mm. 



Mouth. The labrum (fig. 10) has on its free margin a continuous row of 24 short, 

 strong and blunt chitinous teeth. This row of teeth describes an arch, 14 of the teeth form 

 the middle part and 5 are planted on each side. Numerous minute hairs or bristles are scattered 

 over the teeth, larger and stronger hairs outside the teeth, especially beyond the attachment 

 of the palpi. 



The palpi are triangular, elongated. Their tips are at considerable distances from each 

 other: even the bristles planted at the extremity do not touch each other. These bristles are 

 strong and doubly serrated. 



The mandibles (fig. 1 1 and 1 1 a) have three teeth and the inferior angle, which 

 by some authors is considered a fourth tooth, ends in the specimen I dissected in a single 

 sharp spine at the right side (fig. ii«), in two distinct teeth at the left side (fig. 11). First 

 tooth not so far from the second as the latter is from the inferior angle. The second and third 

 teeth pectinated. 



The maxillae (fig. 12) have a notch beneath the three upper spines. Of these one is 

 considerably larger than the other two. In the notch are several spines, three or four of which 

 are stronger than the others. The edge beneath the notch bears numerous strong and smaller 

 spines and is indistinctly divided into two steps. 



Outer maxillae quadrangular with rounded edges; a dense tuft of serrated bristles 

 is directed towards the mouth opening, a less dense group of smooth hairs or bristles is directed 

 towards the base of the maxillae. 



35 



