Mr. A. White on new species o/^gosoma. 137 



Native name, ' Oon-cot-to.' The natives say it cries, as it flies, 

 *How-oo-ar, how-oo-ar, how-oo-ar.' Very shy. Makes its nest in 

 holes of very large trees, in the dry season ; lays two eggs. These 

 birds used to be common in the neighbourhood of Clarence, but since 

 the introduction of guns they have been much shot, and have retired 

 to the mountain. 



Palm oil nuts, only, were found in the gizzard, which was soft, 

 almost like a stomach ; skin very thin and difficult to prepare. Be- 

 tween the skin and body appeared to be air-cells. 



The male is said to differ materially, but I have not been fortu- 

 nate enough to procure a specimen. 



February 8. — John Gould, Esq., F.R.S., in the Chair. 



Monograph of the Genus ^Egosoma, Serville, with the 



description of a new genus and species allied to it. 



By Adam White, F.L.S. 



The genus JEgosoma was formed by M. Serville for the reception 

 of a longicorn beetle, first described by Scopoli under the name of 

 Cerambyx scabricornis. In this geims the head is produced behind 

 the eyes into a kind of neck, unlike its congeners, which have the 

 head retracted into the thorax as far as the eyes. The prothorax is 

 trapezoidal and contracted in front ; the ovipositor of the female is 

 long and prominent; the antennae in the males are rough, in the 

 females smooth. 



The larva of the European species is found in the trunks of various 

 kinds of trees ; the perfect insect, according to M. Mulsant, appears 

 at Lyons in the month of July, and is active at night. M. Serville 

 alludes to a second species, which he had seen in the collection of 

 M. Dejean, where it bore the name u^g. affine. In the following little 

 monograph will be found descriptions of five new species, all con- 

 tained in the collection of the British Museum. 



^GOSOMA. 



Mgosoma^ Serv. Ann. Soc. Ent. Fr. i. 162. — Cerambyx^ p. Scop. — 

 Prionus, p. Fabr. 



1. iEGOSOMA SCABRICORNE. 



Cerambyx scabricornis. Scop. Ent. Cam. 54. 



Prionus scabricornis, Fabr. Syst. El. ii. 258 ; Oliv. Col. iv. t. 11 . 

 f. 42. ? ; Latr. R. A. v. p. 108. 



JEgosoma scabricorne, Serv. Ann. Soc. Ent. Fr. i. 163; Mulsant, 

 Col. de France, i. p. 24. 



Hab. Europe. Coll. Brit. Mus. 



2. ^GOSOMA siNicuM, White. JEg. nigro-brunneum, thorace 

 medio postice recto, scutello apice subelongato. — Long. lin. 18. 



Hab. Shanghai, N. China {Mr. Fortune). Coll. Brit. Mus. 



There is a female of this species in the Museum ; it comes from 

 Shanghai, and differs but little from the corresponding sex of the 

 ^gosoma scabricorne ; it is of a darker brown, the posterior margin 



