458 Mr. Westwoop on some new Species of 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, 4. bifurcatus, A. tridentatus, and A. biden- 
tatus (op. cit. p. 124), inhabit Brazil; 4. ferrugineus, Pal. Beauv. Ins. Afr. et 
Amer. p. 90 col. tab. ii. 6. fig. 3, is from South Carolina; A. Bilbergii, Gray in 
Griff. An. Kingd., from Demerara ; 4. xanthomelas and A. hirtus, Wiedemann 
(Zool. Mag. ii. St. 1. p. 7 & p. 9), from Java; 4. herculeanus and 4. vicinus, 
Laporte, from Brazil; 4. bifurcatus, Lap., from Paraguay; 4. furcifer and 
4. Juvencus, Dej. Cat., from Cayenne ; A. furcicollis, Dej. Cat., from Brazil; 
and 4. subfurcatus, Chevrolat in Dej. Cat., from Mexico. ; 
In addition to the preceding species, Dr. Klug has published descriptions 
of the following: Athyr. bifurcatus [MacLeay? the female of which is 4. fur- 
cicollis, Dej.], from Brazil; 4. tridens, Lap. [A. tridentatus, MacLeay +. 
? A. Laportei in Mus. Hope], from Brazil; A. tridentatus, MacLeay [?] (4. fo- 
veicollis, Dej. Cat., and A. castaneus, Guérin, Iconogr.), from Brazil; A. tri- 
tuberculatus, Klug, from Brazil; 4. excavatus, Klug, from British Guiana; 
A. lanuginosus, Klug, from Columbia ; A. angulatus, Klug, from Cuba; 
A. Mexicanus, Klug, from Mexico; 4. bicolor, Laporte, from Brazil; A. cya- 
nescens, Klug, from Brazil; 4. ceneus, Klug, from Brazil; 4. Corinthius, 
Klug, from Brazil; 4. anthracinus, Klug, from Bahia; 4. violaceus, Klug, 
from Brazil; 4. orientalis, Lap., from Bengal; A. Kordofanus, Klug, from 
Kordofan; and 4. 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. ATH YREUS GIGAs, Hope (Tas. XXII. fig. 1); castaneus, elytris magis rufis, capite 
glabro anticà 3-corn 
uto, mandibulis magnis externe acutd dentatis, pronoto utrinque 
