A. E. Verrill — Marine JVenxirtemis of New Ejiglaixt, etc. 423 



forms before me, I have always found it difficult to draw any clear 

 line of separation between tbein, 



LineUS sanguineus (-Tens Ratlike). 



Planaria sanguinea Jens Rathke, Skiivter af Natiirhist. Selsk., vol. v, i, p. 83, 1709. 



Planaria oefoCTt/ate Johnsf.on, Zool. Jour., vol. iv, p. 56, 1829. 



Nemertes (Borlasia) oc.tocnlata Johnston, Mag. Zool. and Bot., vol. i, p. 537, pi. 18, fig. 



2, 1837; ffirsted, Kroyer's Naturhist. Tidss., iv, p. 579, in note, 1S:'.7. 

 Nemertes sanguinea (Er&tGdi, Entw. Plattw., p. 92, 1844. 

 Borlasia octoculahi Johnston, Catalogue Brit. Mns., pp. 21, 2S7, 290, jii. \ih, fig. 2, 



2* 1855. 

 Linens sanguinfinn Mcintosh, Britisli Annelids, part T, Nenierteans, p. 18S, pi. v, 



fig. 2, \ST.',. 



PLATE XXXYIll, FIGURES 10, 10^/. 



Body strongly convex or well rounded above, flatish beneath, 

 rather long-, in extension often 8 to 10 inches long and .25 inch 

 broad, but it is capal)le of contracting to less than one-fourth this 

 length, and then becomes about .35 of an inch in diameter. Head 

 elongated, usually not so wide as the body, often acute in front 

 when extended, but it changes much in form and may become much 

 shorter and obtuse in contraction ; lateral cephalic slits, moderately 

 long and deep, bordered by narrow pale lips, above ajid below. 

 Ocelli small, but very distinct, blackish, usually 4 to 8 in a row on 

 each side, arranged at the upper margin of the white lateral borders 

 of the head. Mouth rather large, usually round or oval. Math corru- 

 gated white lips, but capable of great extension when swallowing 

 large prey. 



Color of body, above, dai'k red, l)riglit red, or clear reddish brown, 

 usually darker medially ; beneath, pale salmon, flesh-color, or light 

 yellowish red ; snout and margins of head whitish ; the red color of 

 the middle of the head slightly emarginate or notched at its anterior 

 end. 



Eastport, Me., at Dog Island, low-water, under stones, 18GR, (No. 

 2). Also taken at various other localities at Eastport and Grand 

 Menan, between tides, in 1870 and 1872, common. 



ITnder L. viridis, on a previous page, I have, spoken of the close 

 relationshi)> of the red variety of that species to X. sangtihiefis, and 

 have given reasons for doubting the status of this as a distinct 

 species — at least as they occur on our northern coasts. It may be 

 possible that we do not have the real European Z,. sanguineus, but 

 we have an abundance of specimens tlj.at agree in all respects, so far 



