132 MR. n. A. f?H.VW ON THE HABITS OI' LEMURS. [Feb. -4, 



Shells in the Coll. of C. B. Adams, etc' p. 29, note, Jan. 1847 (with 

 the same two species as types); Pan. Sh. p. 275, 18.i2 (G. pa- 

 cifica). Jay, Catal. of 8helis, Jan. 1850; ibid. 1851. Not Gouldia, 

 Bon. 1849-50 {Aves). 



Eriphyln, Gabb, Pal. Cahf. i. p. 180, 1864, type E. umbonata, 

 Gabb; Stohczka, Pal. Ind. iii. p. 156, 1871. 



1 Eriphylopsis, Meek, Pal. Upper Missonri, p. 125, 1876 {E. 

 gregarid) . 



Crassinella, Guppy, Geol. Mag. Oct. 1874, p. 451, types C. 

 pacifica and G. martinicensis, loc. cit. Not Crassinella, Conrad. 



Mr. Gabb's Eriphyla was described under the idea that certain 

 characters of the hinge were constant, which an examination of a 

 series of a recent species of Gouldia (G. mactracea, Linsley) has 

 shown to be variable ; and the same is probably true of Meek's Eri- 

 phylopsis, in which the specimen examined had the teetli reversed, 

 as regards the right and left valves, as compared with the recent 

 species. Such reversals occur in nearly all bivalves in individual 

 cases, and, unless confirmed by the testimony of a large series, can 

 hardly be held to have any systematic value. 



It would seem, therefore, that the genus Gouldia of Bonaparte 

 requires a new name ; but, with Mr. Guppy's example as a warning, 

 I shall leave that to the ornithologists to settle. 



It may be remarked, however, that another genus of Trochilidce, 

 Ealia, Mulsant and Verreaux (Mem. Cherbourg Soc. Sc. Nat. xii. 

 1866), is preoccu})ied by Risso (Eur. Mer. 1826) for a valid genus 

 of moUusks. It may also be questioned whether Doryfera, Gould, 

 P. Z. S. 1847, has the right to exist simultaneously with Doryphora 

 (Illiger, 1811, and Kiitz. 1844). Moreover Glaiicus (Bruch, Cab. 

 Journ, 1853, Laridce) was used for a moUusk by Forster in 1800, 

 and Gnathodon (Jardine, Ann. Nat. Hist. xvi. 1848, Columbidce) 

 was used by Gray for a mollusk in 1825. 



Washington, Dec. 25, 1878. 



7. A few Notes upon Four Species of Lemurs, specimens of 

 which were brovight alive to England in 18781 By 

 George A. Sn.iw. 



[Received January 9, 1879.] 

 (Plate IX.) 

 1, The Ring-tailed Lemur^ 



As far as my experience of seven years goes, these Lemurs are 

 found only in the south and south-western borders of the Betsileo 

 province of Madagascar. This province is about 150 miles in length, 

 by 50 or 60 in width, and is situated on the central tableland, about 

 100 to 250 miles south of Antananarivo, the capital of Madagascar. 



' Middleburg, Vt., Justus Cobb, 1847, 8vo, pp. 32. The preface is dated 

 January 1847. 



" [See above, p. 2.— P. L. S,] 

 '' [Lemur catta, Linn. — P. L. S.] 



