262 Riley's Lectures on Erpetology. 



relation to the larva of a species of Ephemera, or May-fly, 

 and of the larva a figure is given, so magnified as to fill a 

 quarto plate, in which the vessels and actions spoken on are 

 pointed out. — " Observations on the Enioceri, by G. Wailes, 

 Esq." A rich cluster of facts on their habits. — " Abstract 

 of M. Straus-Durckheim's i Considerations generales sur 

 l'Anatomie comparee des Animaux articules,' by Edward 

 Doubleday, Esq." The past and now proceeding lectures, 

 by Dr. Grant, before the Zoological Society, " On the struc- 

 ture and classification of animals," have enabled us to enjoy 

 this. — " Observations upon the saltatorial powers of insects, 

 and upon the British coleopterous genus Choragus, by J. O. 

 Westwood, Esq." The first portion of the communication 

 enumerates the insects remarkable for leaping, and describes 

 their mode of performing it: this is very interesting. — " On 

 the existence of natural genera, by A. W. Griesbach, Esq." 

 A clever essay. We know not if the following remark by 

 Smith, in botany, will be deemed relevant to the question in 

 insects : we think it may : — " While i?6sa, JRubus, Quercus, 

 Salix, jPicus, Cypripedium, i^pimedium, and Begonia exist, 

 it will be vain to deny that generic distinctions are founded 

 in nature, though botanists may, as yet, be very far indeed 

 from having discovered them all correctly." — " Varieties," 

 which include short notices, variously interesting. The last 

 page is occupied by a poem ¥ On the death of Latreille." 

 Would that we had space to republish it ! It is of a very 

 superior order ; superior in its sentiment of affectionate vene- 

 ration for this great man, and superior in its poetry : we 

 cannot enough commend* it. The contributions to systematic 

 entomology have these titles : — " Opinions on Mr. Newman's 

 Sphinx vesj)ifor?nis." — " Observations on the British species 

 of Sepsida?, by F. Walker, Esq." — " An essay on the clas- 

 sification of the parasitic Hymenoptera of Britain, which 

 correspond with the ichneumones minuti of Linnaeus, by 

 A. H. Haliday, Esq." " Entomological notes, by E. Newman, 

 Esq." — " Monographia Hydraenarum Angliae, by G. R. 

 Waterhouse, Esq." — " Notice of works on entomology," in 

 which the sc*ope or contents of 15 works are indicated. 



Riley, Dr. : Thirteen Lectures on Erpetology, or the Struc- 

 ture, Classification, Habits, and History of Reptiles; 

 delivered before the Bristol Institution, in April and May, 

 1832: to which is affixed, Bory de St. Vincent's Analytical 

 Table of the Class, Orders, Families, and Genera of 

 Reptiles. Bristol. 1 5 pages folio. 2s. 



These lectures succinctly comprise a very interesting stock 



