NO. 8 NEW POLYCHAETOUS ANNELIDS TREADWELL 5 



EUPHOLOE CIRRATA, n. sp. 



Plate I, figs. 9-12; plate 2, figs. 13-16 



A number of specimens are in the collection, but none is entire. 

 Anterior portions containing about 60 somites are 50 mm long. The 

 prostomium is i mm in diameter, but if the parapodia which extend 

 along the sides of the prostomium are measured, the total head width 

 is 3 mm. The greatest body width is 4 mm. 



The prostomium (fig. 9) is oval in outline its width being about 

 twice its length. No eyes are to be seen, but the dorsal surface is 

 irregularly blotched with purplish patches. The tentacle is very short 

 and slender and is inserted a little back from the anterior prostomial 

 border. The palps are long and slender and not noticeably thickened 

 at the bases. There are no lateral tentacles or tentacular cirri. 



The first parapodium (fig. 10) on either side extends forward 

 and, together with the buccal membrane and the bases of the palps, 

 forms the outer boundary of a space lateral to the prostomium. It 

 was very difficult to get a satisfactory dissection of this parapodium, 

 and the drawing is not complete. The setal portion is blunt-ended, 

 and there is a single acicula. From the outer dorsal surface arises 

 a tuft of very slender setae, and on the dorsal surface are numerous 

 cirri of various sizes. No attempt has been made to draw them all, 

 as so great a number would confuse the drawing. One as drawn is 

 much larger than the others and may be the dorsal cirrus ; but if so, it is 

 broken, for in another specimen (fig. 11) this cirrus is long and 

 slender. There is a slender ventral cirrus. The second parapodium 

 (fig. 12), is very thick and heavy and extends forward so as to 

 overlap the first, the inner face of the second being slightly concave. 

 Each carries dorsally a small, nearly circular elytra. There is no 

 marginal indentation between the neuropodium and notopodium, and 

 each portion carries an acicula. In the neuropodium is a bunch of 

 very heavy setae, most of which have been broken ofif at about the 

 level of the body surface. The only notopodial setae are a tuft of 

 slender ones arising at the anterior margin of the elytrophore. A 

 tangle of cirri similar to those of the first parapodium arise from 

 this same position. The ventral cirrus is short and heavy. The second 

 parapodium is larger than the first, and this increase in size continues 

 as far as the eighth. 



A parapodium from near the middle of the body (fig. 13), is 

 elongated, and the vertical diameter of its setal i>ortion is much less 

 than that of the body. The neuropodium widens slightly toward the 

 end, where there are a large ])osterior and two smaller anterior lobes. 



