458 Mr. Westwood on some new Species q/* Athyreus, 



versely ; and in others, the specific instead of the sexual character seems to 

 be found in the straightness or angulated form of the occiput, and this is espe- 

 cially the case with the smallest and commonest of the Brazilian species. 



With the exception of one or two Indian and African species, the greater 

 portion of the Athyrei are natives of Brazil, Guiana, Columbia, Cuba, Mexico, 

 and other parts of Tropical and South America. 



Mr. MacLeay's three species, A. hifurcatus, A. tridentatus, and A. biden- 

 tatus {op. cit. p. 124), inhabit Brazil; A. ferrugineuSyVdX. Beauv. Ins. Afr. et 

 Amer. p. 90 col. tab. il. 6. fig. 3, is from South Carolina ; A. Bilbergii, Gray in 

 GrifF. An. Kingd., from Demerara ; A. xanthomelas and A. hirtus, Wiedemann 

 (Zool. Mag. ii. St. 1. p. 7 & p- 9), from Java; A. herculeanus and A.vicinus, 

 Laporte, from Brazil; A. bifurcatus, Lap., from Paraguay; A. furcifer and 

 A. Juvencus, Dej. Cat., from Cayenne ; A. furcicoUis,T>ej. Cat., from Brazil ; 

 and A. subfurcatus, Chevrolat in Dej. Cat., from Mexico. 



In addition to the preceding species. Dr. King has published descriptions 

 of the following : Athyr. bifurcatus [MacLeay ? the female of which is A.fur- 

 cicollis, Dej.], from Brazil; A. tridens, Lap. \_A. tridentatus, MacLeay?. 

 ? A. Laportei in Mus. Hope], from Brazil ; A. tridentatus, MacLeay [?] {A.fo- 

 veicollis, Dej. Cat., and A. castaneus, Guerin, Iconogr.), from Brazil ; A. tri- 

 tuberculatus, Klug, from Brazil; A. excavatus, Klug, from British Guiana; 

 .A. lanuginosus, Klug, from Columbia; A. angulatus, Klug, from Cuba; 

 A. Mexicanus, Klug, from Mexico ; A. bicolor, Laporte, from Brazil ; A. cya- 

 nescens, Klug, from Brazil; A. (eneus, Klug, from Brazil; A. Corinthius, 

 Klug, from Brazil ; A. anthracinus, Klug, from Bahla ; A. violaceus, Klug, 

 from Brazil ; A. orientalis, Lap., from Bengal ; A. Kordo/anus, Klug, from 

 Kordofan ; and A. porcatus, Lap., from Senegal. 



In addition to the preceding species, I now beg leave to offer to the Lin- 

 nean Society descriptions and figures of a number of new and remarkable 

 insects belonging to the same genus, the greater portion of which have been 

 kindly placed in my hands for description by the Rev. F. W. Hope, in whose 

 collection they are preserved. 



1. Athyreus gigas, Hope (Tab. XXII. fig. 1) ; castaneus, elytris magis rufis, capite 

 glabro antice .S-comuto, mandlbulis magnis externe acute dentatis, pronoto utrinque 



