IX. — Descriptions of theee new species of New England 

 Paljeonemerteans. By Wesley R. Coe. 



Since the publication of Verrill's monograph on the Marine 

 Nemerteans of New England, in vol. viii of these Transactions, the 

 three following species of Palaeonemerteans, which I believe to be 

 undescribed, have been found on this coast. 



Carinella Johnston, Loudon's Mag. Nat. Hist., vi, 1833 (t. Mcintosh). 



Garinella Burger, Nachr. von der K. Ges. der Wiss. zu Gottingen, 1892 ; Joubin, 

 Faune Fran9aise, 1893. 



Head truncate in front, broader than the body, from which it is 

 often separated by shallow, transverse grooves. Intestine without 

 caeca. The lateral cords lie between the basement membrane of the 

 integument and the outer circular muscular layer of the body-wall. 

 The side-organs are but slightly developed, and consist of a pair of 

 epithelial pits which seldom become so deep as to penetrate a dis- 

 tinct lobe of the brain. There are but two longitudinal blood-vas- 

 cular trunks. 



Carinella pellucida sp. nov. 



Body slender, almost filiform, slightly flattened posteriorly. Head 

 broader than the body, somewhat flattened, often contracted so as to 

 become emarginate in front. Head marked off from the body by a 

 slight constriction formed by a pair of shallow, lateral, transverse 

 grooves. Mouth small, placed ventrally, near the tip of the head. 

 Ocelli none. 



Color pale grajdsh white or translucent, often with a slightly yel- 

 lowish tinge. A small species, the sexually mature animals being 

 only about 25"""^ long and having a diameter of about .5™'". Most 

 of the specimens found are much smaller and in alcohol rarely exceed 

 gmm jjj length.* The sexual products mature early in July. 



Savin Rock, near New Haven ; not uncommon at low water 

 among the tubes of annelids [Potmnilla). 



* Verrill has figured, without descriptions, on Plate xxxviii, figs. 11, 11a, in vol. 

 viii of these Transactions, a species of Nemertean, from Vineyard Sound, which he 

 designated as Lineus sp. (?), and which is probably identical with this. 



