AHT. 



THREE NEW POLYCHAETOUS ANNELIDS — TEEADWELL 



LUMBRINEREIS ELONGATA, new species 



Figure 2 



In one bottle are a number of pieces of Luvibrlnereis^ one carrying 

 the head and another the anal portion, and there are a number of 

 other fragments. It is not possible to tell whether these all belong 

 to the same individual, but they probably do, and in this case it is 

 unusually long for this genus, measuring more than 300 mm. but 

 with a body width of not more than 1 mm. No color appears in 

 the preserved specimen. The prostomium (fig. 2, a) is sugar-loaf in 

 outline, a trifle longer than wide, as long as the first three somites. 

 There are two achaetous somites of which the first is a little longer 

 than the second, the constriction between them being indistinct. 

 Together thev are about one-third longer than the third somite. 

 The first parapodia are very short, but there is a gradual increase 

 in length in later ones, fu.U size be- 

 ing reached at about the fiftieth 

 somite. Toward the posterior end 

 there is a gradual decrease in the 

 width of the somites but little change 

 in the size of the parapodia. Three 

 blunt, conical cirri and a fragment of 

 a fourth are attached to the anal 

 somite. 



The para])odia have the form usual 

 in this genus, with no notopodium 

 and a prominent postsetal ]obe. The 

 two kinds of setae characteristic of 

 Lvmhrinereis are both present (fig. 

 2, J). (?), the hooded form being much 

 the more numerous. Tliese have a 



large subapical tooth VA'ith a series of five or six apical ones beyond it. 

 Of these the largest is near the subapical, and the others decrease in 

 size toward the upper part, so that at the very end it is difficult to 

 determine the exact number. 



In the javv' (fig. 2, d) the forceps have a prominent carrier and a 

 slender terminal portion. The left paired plate has a slender ter- 

 minal tooth followed by three much heavier ones, and a basal hump 

 that may be the remnant of a tooth. The second paired plate has 

 two teeth, the terminal plate only one. The jaw was badly broken 

 in removing and only the left side is intact, but so far as could be 

 determined the plates are symmetrical on the two sides. All plates 

 are dark brown. The mandible was too badly broken for description. 



Holotype.—V.^.'^M. No. 10622, from Grande Isle, La. 



FiGDEB 2. — Lumbrineieis elongata, 

 new species : a. Head, X 10 ; 6, 

 hooded seta, X 250 ; c, simple 

 seta, X 250 ; d, part of jaw, X 45 



