1903.] NATURAL SCIENCES OF PHILADELPHIA. 423 



Aphrodita australis Baird. 



This, the representative in the Austrahan seas of our well-known sea 

 mouse, has not been recorded hitherto from Japanese waters. 

 Sagami Bay, 3,696, 501-749 fms., and 3,697, 120-265 fms. 



Aphrodita japonica v. Marenz. 



Von Marenzeller describes the ventral spines of his specimen as 

 smooth, a condition which I have assumed to have resulted from the 

 wearing away of the hairs present in all three of the "Albatross" ex- 

 amples. The palpi are also longer in the latter. 



Sagami Bay, 3,698, 153 fms.; Sagami Bay, 3,704, 94 fms.; Suruga 

 Bay, 3,713, 45 fms. 



ACCETIDiE. 

 RESTIO gen. nov. 



Both median and paired tentacles entirely absent; palpi well devel- 

 oped; ommatophores wanting or completely coalesced with the sides 

 of the prostomium so that the eyes are sessile; peristomial palpi with- 

 out setse; setae in general resembling those of Eupanthalis. 



Restio aenus sp. nov. (PI. XXIV, figs. 21-24.) 



Represented by an anterior end consisting of the prostomium and 

 41 somites, probably the greater part of the worm, and measuring 

 35 mm. long, and 5.2 mm. in total width, which is remarkably con- 

 stant. 



Prostomium slightly wider than long, broadly bilobate anteriorly 

 where a slightly median sinus divides it into two broadly rounded lobes 

 from which the slides slope caudad to the somewhat narrower, straight 

 posterior border. There are two pairs of eyes, of which the first are 

 very large, black, cup-shaped, with a lens-like central thickening, and 

 face directly forward, being situated on the anterior face of the pro- 

 stomium close to the lateral angles. The posterior have a diameter of 

 only ^ the anterior, are black, circular, without lenses, and are situated 

 on the sloping lateral faces of the prostomium, from which they look 

 outward and caudad across the pit to be mentioned below. From be- 

 tween the eyes of each side a translucent membranous process reaches 

 laterad to, but not uniting with, the peristomial parapodia. There is 

 not the slightest trace to be seen of median or paired tentacles, nor of 

 the scars which they should leave if accidentally broken away, although 

 the front of the head was examined with very great care under favorable 

 conditions. The palpi have been lost, but very distinct scars remain 

 beneath the anterior eyes on the extreme lateral part of the anterior 



