96 Mr. J. O. Westwood’s Descriptions of 
form of its head, thorax, and elytra, the length and slenderness of 
the legs, and the formation of the palpi, were characters which 
evidently intimated a connexion with other families. The insect 
upon which this genus was established, w'as found by Dalman in 
Gum Copal, or rather, perhaps, (according to the recent investi- 
gations of Mr. Hope,) Gum Anime* By the kindness of M. 
V. Andouin I now possess an insect belonging to this genus from 
Madagascar (which, in conjunction with Dr. King’s descriptions of 
Madagascar Coleoptera, clearly proves that the Gum Anime insects 
are inhabitants of that remarkable country). I must refer to the 
Linnasan Transactions for a detailed account of this genus, and 
shall here only describe the parts of the mouth. 
Labrum transversum, angulis anticis rotundatis, ciliatum. (Fig. 
8 b.) 
Mandibulce corneae, fere quadratae, compressae, dente terminali 
gracili, bifido, margine interno dense ciliato. (Fig. 8 c.) 
Maxillae magnae planae, lobo terminali maximo, interne recto, 
externe rotundato dense piloso, lobo interno minuto, acuto, 
ciliato. Palpi maxillares crassi, 4-articulati; articulo lmo 
minuto — 2do et 3tio magnis, obovatis — ultimo majori, ovato- 
conico. (Fig. 8 d.) 
Mcntum transversum, integrum, anticfe angustius. Labium antice 
in lobos duos laterales dilatatum. Palpi labiales 3-articulati ; 
lmo articulo minuto — 2do majori, pateraeformi — ultimo max- 
imo, dilatato, apice truncato. (Fig. 8 c.) 
From these characters, and from the tetramerous tarsi, it is evi- 
dent that the affinity of this genus is more strictly towards Endo- 
mychus or Eumorphus, as Dr. Klug has indeed noticed in his 
Jahrbuch der Entomologie. 
The insect from Madagascar appears to differ specifically from 
that described by Dalman, of which the character is 
Species 1 . Trochoideus cruciatus, W estw. (Mow. Pauss.) 
Ferrugineus, elytrorum basi apiceque fuscis, sutura fasciaque 
media brunneis. 
Species 2 . Trochoideus Dalmanni , Westw. Plate X. fig. 8. 
Fuscus, vixnitidus, pubescens ; elytrorum humeris, apice, maculis- 
que quatuor discoidalibus mandibulisque luteis. 
Long. corp. lin. 1§. 
Habitat in Insula “ Madagascar.” 
In Mus. Reg. Paris, D. Gory, Chevrolat et nostr. 
