Bibliographical Notice. 71 



can, therefore, be little doubt that the true description of 

 Cocytus will be as follows : — 



Adolias Cocytus^ Fabricius. 



S . Alls integerrimis falcatis, supra nigro-fuscis, lineolis discoideis 

 nigris, margine externo viridi-cyeruleo extiis violascente, posti- 

 cis lato : subtus omnibus ochreis ; anticis lineolis qninque discoi- 

 deis, striga sexlumdata submarginali, nebula margiuali vio- 

 lacea; posticis lineolis basalibus vix distinguendis, striga sub- 

 marginali lunulata fusca. 



Exp. alar. unc. 2J^-2y^. 



The Indian species will of course have to be described ; and 

 I therefore propose for it the name of A. lejndea. 



Adolias lepidea^ sp. nov. 



Adolias Coci/ta, E. Doubleday, List Lep. Brit. Mus. i. p. 104 (1844), but 



not of Fabricius. 

 Adolias Cocytus, Westwood in Gen. Diiu-n. Lepid. p. 291. no. 9 (18o0) ; F. 



Moore, Monog. Adol., Trans. Ent. Soc. v. p. 7G. no. 28 (IS-W). 



Aloe supra maris nigro-fuscte, feminse fuscae ; disco medio paidum 

 pallidiore ; margine externo pallido cinereo-fusco, margine ex- 

 terno feminai fuscescente, lituris discoideis nigris. 



Alie subtus midto pallidiores, maris castaneo-fuscae, feminte ochraceoe 

 disco medio ochreo : posticse extus albicantes ; striga maculari 

 submarginali, altera postmedia angulari lunulata, posticis ochra- 

 ceis ; lituris discoideis nigris : anticse margine externo violas- 

 cente. 



Exp. alar. unc. 2-if-3|. 



S ? , North India. S var., South India. B.M. 



BIBLIOGRAPHICAL NOTICE. 



Figures of Cliaracteristic British Fossils ; ivitli Descriptive Itemarhs. 

 By William Hellier Baily, E.L.S., F.G.S., &c. Part I., pages 

 i-xxiv & 1-30 ; Plates I.-X. 8vo. London : Van Voorst, 1807. 



This first instalment of a work of good promise, well planned and 

 well begun, is very acceptable to geologists, both amateur and pro- 

 fessional. The heavy task that lies before the geological inquirer 

 who wishes to set eyes on any large group of fossils peculiar to a 

 system of strata often checks his progress, and is always a trouble. 

 He may have recourse to Bronn's comprehensive • Lethaja geognos- 

 tica,' but it is cumbrous, expensive, and German ; nor does it place 

 before him the fossils of the several " formations " of each geological 

 "system," as is proposed to be done in the work before us. The 

 still more voluminous ' Paleontologie fran9aise ' is further beyond 

 his requirements, being arranged to give every known species in de- 



