

Notices respecting New Books. 289 



CUTEREBRA F0NT1NELLA. 



C. thorace atro, lateribus albis ; abdomine violaceo, ultimis 

 segmentis albis, nigro-punctatis. 



White-tailed Cuterebra, or Blue Rabbit Fly. 



Habitat in Illinoe Americae Septentrionalis, cuniculos infestans. 



Descr. Cuterebra Cuniculi dimidio minor; atra, subcylin- 

 drica, cum capite parum latior. Frons insuper atra et 

 circa oculos lucida, infra albida, pilosa, utrinque puncto 

 elevato atro. Oculi picei. Thorax insuper ater, late per 

 medium et ad latera pilosus, albus, punctis tribus nigris 

 utrinque notatus. Alee obscure nigro-fuscae, sulcis valde 

 puculatae et rugosae, corpore longiores ; ad basin squa- 

 mula foliacea erecta, magna : tympanum halterem tegens 

 magnum, convexum, marginatum. Abdomen breve, atrum, 

 lucidum, superne violaceo resplendens; segmentis duo- 

 bus postremis hirtis, albidis, punctisque variis atris eleva- 

 tis, glabris. Anus utrinque quasi forcipe prehensorio 

 armatus. Pedes atri. 



XLVIII. Notices respecting New Books, 



An Introduction to Geology: comprising the Elements of the Science 

 in its present advanced State, and all the recent Discoveries. By 

 Robert B a kewell. The Third Edition, entirely recomposed t 

 and greatly enlarged. With new Plates, Cuts, fyc. Octavo, pp. 540. 



THE readers of the Philosophical Magazine, may probably 

 remember, that after the first edition of Mr. Bakewell's In- 

 troduction to Geology appeared in 1813, the late Mr. John Farey, 

 a practical geologist and accurate observer, published a very co- 

 pious analysis of the work, in several Numbers of the Magazine, (see 

 vol. xli. and vol. xlii.*) A second enlarged edition of the Introduc- 

 tion to Geology was soon after published ; and it was translated into 

 German by Mr. Fred. Muller, of Friburg. The work has now been 

 several years out of print, and has been frequently called for. We 

 shall extract from the author's Preface a brief account of what has 

 been done in the third edition, in order to present a distinct view 



* Mr. Farey opposed with some warmth, the parts of Mr. Bakewell's 

 work which were at* variance with his own opinions on the Geology of 

 Derbyshire; but he concludes his strictures with the following remarks: 

 " I beg however distinctly to state, that I have yet perused no systematic 

 work on Geology, which I think entitled to a general and careful reading, 

 in any degree compared with Mr. Robert Bakewell's ' Introduction to Geo- 

 logy > and which I sincerely wish may be read and studied by hundreds 

 of persons, with no* less care and attention, than I have bestowed upon 

 it. Because I can assure them that it contains more facts concerning our 

 planet, and fewer absurdities and whimsical assertions and theories, than 

 any of the numerous systematic works which have preceded it, in our own 

 language, or I believe in any other." — Phil. Mag. vol. xlii. p. 246. 



New Series. Vol. 3. No. 16. April 1828. 2 P of 



