LASIODERMA.—TRICHODESMA. 199 
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from North America. The one noticed here has the habit of feeding upon ginger and 
other articles of commerce, and may probably have been introduced. 
1. Lasioderma serricorne. 
Ptinus serricornis, Fabr. Ent. Syst. i. p. 241; Syst. El. p. 3261. 
Pseudochina serricornis, Muls. Téréd. p. 175°; Lec. Prodr. p. 238°. 
Pitilinus testaceus, Dufts. fn. Aust. iii. p. 46 *. 
Xyletinus testaceus, Sturm, Fn. xi. p. 89’, t. 237. f. P, Q. 
Lasioderma testaceum, Steph. Il. Brit. Ent. v. p. 417°; Kiesenw. Naturg. der Ins. Deuts. v. p. 150’. 
Hab. Evrorpr, Hungary *, Germany’, England®, Spain; Norra America }3.— 
Mexico, Vera Cruz (coll. Sallé). 
I have only seen this in Sallé’s collection. Its habits agree with the expression in 
Fabricius :—“ Habitat in Americe plantis siccis.” 
TRICHODESMA. 
Trichodesma, Leconte, Class. Col. N. Am. p. 204 (1861) ; Proc. Ac. Phil. 1865, p. 280. 
Species of Trichodesma have only occurred at present in North America and Japan. 
Three species are described, including the species representing Hedobia imperator in 
Sallé’s coliection. 
1. Trichodesma imperator. (Tab. X. fig. 9.) 
Hedobia imperator, Cast. Silb. Rev. iv. p. 58’. 
Hab. Mexico!, Almolonga (Hége), Orizaba (Sallé); GuatemaLa, Duefias, San Gero- 
nimo, Cerro Zunil (Champion). 
A specimen from Almolonga is figured. 
2. Trichodesma albina. (Tab. X. fig. 10.) 
Oblonga, nigra, pube depressa alba nigraque variegata, thorace conico-elevato maculis quatuor nigro-pilosis 
ornato ; elytris albo-sericantibus, utrinque angulariter denudatis, creberrime punctato-sulcatis, punctis 
transversis; antennis ferrugineis. Long. 5 millim. 
Hab. GuatemaLa, San Gerdénimo (Champion). 
Allied to 7. imperator, distinguished from it by the close depressed rather sericeous 
white pubescence with which the thorax and elytra, with the exception of a few pilose 
tufts, and the lateral almost denuded patches, are invested. The head, which is quite 
sunk in the thorax, has the crown black and denuded ; the thorax covers it like a hood ; 
there are no hind angles; but what must be termed the front angles are more acutely 
produced than in 7. emperator. On looking at the thorax from the front, on the 
summit of the cone which it forms, four black spots are seen, which leave a narrow 
white cross between them; on the denuded patches on the side three or four white 
pubescent dots are seen disposed in an angular band. Starting from the scutellum, the 
