INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 667 



MONTAGUA GouLDii Yerrill, sp. iiov. 



Body elongated, rather sleuder ; foot with the anterior angles only 

 slightly prominent, and obtusely rounded; posteriorly it tapers gradu- 

 ally to an elongated slender point. Tentacles long, slender, not serrate, 

 the dorsal ones a little longer than the oral ; eyes small, black ; branchial 

 papillae fusiform, moderately stout, grouped in eight or more tranversa 

 rows on each side, the rows being grouped two by two, so as to form 

 transverse clusters, with two rows each, the rows of the clusters being 

 separated by spaces narrower than those between the clusters. Color 

 of body lighfc yellow or tinged with pale orange; tentacles pale orange, 

 with a flake-white stripe on the posterior surface ; branchial papillae 

 dark brown or reddish brown internally, with a ring of opaque white 

 close to the tips. 



Length about 20°^". 



Off Thimble Island, in 4 to 5 fathoms, with the preceding species. 



This is nearly allied to M. Mananensis Stimpson, but the angles of the 

 foot are less produced and not acute, and the proportions of the tenta- 

 cles are different. Dr. Gould seems to have confounded this species 

 with M, diversa {JEolis diversa Couth.), and one of his figures (Plate 

 19, fig. 280) apparently represents this species ; but certainly does not 

 represent M. diversa, which was originally described and figured as hav- 

 ing the oral tentacles longer than the dorsals (See Gould's figs. 267, 268, 

 copied from Couthouy.) 



CORYPHELLA GYMNOTA YcrriU. 



Eolis ( Tergipes) gymnota Coutliouy, Boston Jour. Nat. Hist., vol. ii, p. 69, Plate 1. 

 fig. 3, 1838; Gould, luvert., ed. i, p. 7; ed. ii, p. 249, Plate 16, figs. 233-241. 

 Montagua gymnota H. and A. Adams, Genera, vol. ii, p. 74. Cavoliiia gymnota, 

 this Report, p. 383. (See errata.) 



Wood's Hole to Boston, Massachusetts. 

 Tergipes despectus Adams, (p. 495.) 



H. and A. Adams, Genera, vol. ii, p. 76, 1858. Eolidia despecta Johnston, Loud. 

 Mag. Nat. Hist., vol. viii. p. 378, fig. 35^. Eolis despecta Alder and Hancock, 

 Brit. Nud. Moll., Fam. 3, Plate 37. ^olis {Tergipes) despecta Gould, Invert., 

 ed. ii, p. 248, Plate 16, figs. 222-225. 



Stonington, Connecticut, to Bay of Fundy and northward ; northern 

 coasts of Europe to Great Britain. Off Watch Hill, 4 to 5 fathoms, on 

 Laminaria^ among hydroids. abundant ; Casco Bay ; Eastport Harbor. 



Herm^a cruciata a. Agassiz, MSS. Plate 25., fig. 175. 



Gould, Invert., ed. ii, p. 253, Plate 17, fig. 256. 



J^aushon Island (A. Agassiz). 

 Elysia ohlorotica Gould. Plate XXV, fig. 172. (p. 480.) 



Invert., ed. ii, p. 255, Plate 17, figs. 251-255, 1870. 



Great Egg Harbor, New Jersey, in pools on salt-marsh at low-water 

 (A. E. Y. and S. I. Smith). Cambridge, Massachusetts (Agassiz). 



