and Flanarians of New England. 527 



Virginia, evidently belong to Amphiporiis. The third (P. cervicalis) 

 from Japan, is more doubtful, but appears to be closely related to 

 A. rhomhoidalis, so far as described. 



Polina grisea Stimp. ; Gr'd, p. 265=Am.pMporus griseus Yer., vol. viii, p. 398, 

 Polina glutinosa Ver. ; Gr'd, p. 265=Aniphiporus glutinosus Ver., vol. viii, 



p. 39V. 

 liineus gracilis Gr'd, p. 268, pi, vi, figs. TO-VSrrrLineus viridis (Fabr.) Yer., 



vol. viii, p. 418, 



This species, which is described in considerable detail, is clearly 

 the typical form of the common Lineus viridis, as Dr. Girard, him- 

 self, admits. He, however, expresses doubt as to the identity of our 

 species with that of Greenland, described by Fabricius and by 

 Mtiller.* 



I have carefully studied Greenland specimens and can find no 

 difference whatever. Moreover, various other recent writers have 

 recorded the same species from Greenland under the name of X. 

 Gesserensis. The description and remarks of Fabricius apply accur- 

 ately to this common species and to no other species of that region. 



For more details of the involved synonymy, I must refer to my 

 former article. 



' liineus dubius Yer.; Gr'd, p. 2lO=Do. Yer., vol, viii, p. 426. 

 "^ Lineus pallidus Yer. ; Gr'd, p. 270== Do. Yer., voL viii, p, 425. 



Lineus communis Yer. (won Yan Ben.); Gr'd, p. 274=L. socialis (Leidy) Yer., 

 vol. viii, p. 424. 



Borlasia Gr'd, p. 272 {non Okeu.). 



Dr. Girard admits that this generic name is properly a strict 

 synonym of Lineus, as is well known, but he proposes to restrict it 

 to another group, following OErsted. 



According to Dr. Girard, his genus has no lateral cephalic slits 

 and no ocelli. The proboscis-pore is terminal, and the mouth is sub- 

 terminal, antero-inferior. To judge from his brief description it 

 should belong either to the Enopla or to the Paleonemertea (per- 

 haps near EupoUa), but it is not possible to place it definitely in 

 either group until rediscovered and studied more carefully. 



Borlasia Kurtzii Gr'd, Proc. Philad. Acad., vol. vi, p. 366 (1853); p. 273. Genus 

 uncertain. 



This Carolinian species has not been redescribed since 1853. I 

 have never found any form agreeing with it. In color and general 



* Dr. Girard erroneously states that the name was first given by Miiller to a Danish 

 species, but Miiller states that his species was obtained by Fabricius in Greenland. 



