•>7 

 2. Alepas intermedia n. sp. PI. IV, fig. 13 — 16. 



Capitulum oval, surface smooth, 110 scuta. Orifice narrow, not projecting. Peduncle stout, 

 nearly as long as the capitulum. Inner rami of the 5 th and 6 th cirri slightly shorter than the 

 outer rami. 



Capitulum of an oval shape (fig. 13), apex bluntly pointed, carinal margin strongly 

 bowed, rostral margin also bowed but less strongly. Orifice a narrow slit, which from being 

 exactly in the longitudinal axis is hardly visible, when the animal is seen laterally. The capitulum 

 is entirely devoid of scales or valves; its surface is smooth, one or more indistinct furrows 

 excepted, which start from the rostral edge and describe curves over the surface. The capitulum 

 blends insensibly into the long and strongly developed peduncle, the surface of which is either 

 nearly quite smooth, or indistinctly ringed transversely. 



The peduncle is somewhat compressed laterally : the shape of a transverse section is 

 oval, not circular. 



S i z e. The figure 1 3 represents one of the larger specimens. It has a capitulum about 

 1 cm. and a peduncle about o,S cm. long. 



The body and its appendages are in general as in the other species of the genus. I wish 

 to point out only the following characteristic features. 



Mout h. Of the labrum (fig. 14) not only the middle part of the crest is furnished 

 with a row of teeth, but also each lateral part. Those of the middle part are blunt, shorter in 

 the middle than at the sides, whereas those of the lateral parts are sharp, hook-like. The middle 

 part has about 20 teeth, each lateral part 8 — 10. 



The p a 1 p i are perhaps not quite so long and narrow as in the other species of the 

 genus ; they have a dense row of rather long and strong bristles on the outer border and these 

 bristles are doubly serrated. 



The mandibles (fig. 15) have three teeth and the inferior angle. The latter ends in 

 a single sharp spine. The distance between the first and second teeth corresponds exactly with 

 that between the spine of the inferior angle and the second tooth. The lower edges of the 

 first, second and third teeth of the mandible appear pectinated, owing to the presence of short 

 strong spines projecting from the sides of the teeth. 



The m a x i 1 1 a e (fig. 1 6) have a triangular shape, with the edge rather long ; the notch 

 beneath the three larger upper spines and two other shallow notches about the middle of the 

 edge give it an irregular appearance. The spines are very unequal in strength and size : a few 

 are large and strong, the smaller ones are more numerous. The apodeme is rather long. 



The outer maxillae are square in shape, broad with the angles rounded. The bristles 

 form thee distinct groups: some rather long are planted round the free outline and cover the 

 superior part of the dorsal face of the maxilla. A second group consists of short and rather 

 stiff bristles planted close to the margin at which the two maxillae touch one another. The 

 bristles on the basal part of the maxilla are long and delicate and form a third and much less 

 dense group near the so-called olfactory orifice. 



The cirri are but slightly curled; though the pedicels are rather long the shortness 



37 



