646 . DERMESTIDZ. 
GENATTUS, gen. nov. 
Antenne 11]-articulate, articulis 5-8 brevissimis; clava triarticulata, maris elongata laxe articulata. Palpi 
maxillares articulo ultimo fere magno, apice truncato. Mentum grande. Prosternum in medio horizon- 
tale, anterius ad capitis receptionem adaptatum. 
This genus bas the facies of the A. verbasci-section of Attagenus (=Megatoma, 
Reitter &c.), but is abundantly distinct therefrom, the prosternum and mesosternum 
being brought into contiguity and co-adapted in a much more perfect manner. The 
prothorax is without any antennal fosse. The prosternum has the anterior margin a 
little pendent, and inside forms a polished oblique plate or chin-piece, against which 
the head is retracted ; when retracted the mandibles and a part of the mentum still 
project. The middle coxe are moderately separated, with a broad, deep, and perfect 
horizontal groove for the reception of the small prosternal process. The club of the 
male antenna is remarkable for the loose articulation of the joints, in this respect 
much resembling the Dorcatomine-division of Anobiide. 
1. Genattus sequalis, sp.n. (Tab. XIX. figg. 13, ¢; 13a, ¢ antenna; 13 4, 
2 antenna.) 
Ovalis, sat convexus, pube subdepressa conspicua vestitus, niger, pedibus rufis; antennis testaceis, clava maris 
nigricante ; elytris versus basin plus minusve rufescentibus, fasciis tribus irregularibus et interruptis 
albidis. 
Long. 3-4 millim. 
Hab. Mexico, Cordova (Sailé). 
In this insect the pubescence of the upper surface is more developed than in the 
allied forms. The antenne have the first joint a good deal longer than the second, 
which is almost spherical; joints 8-5 are very small; the second joint of the elongate 
male club is triangular, having only a very slender articulation with the joint before it 
and also with the terminal joint, this latter being nearly twice as long as the tenth. 
The thorax is rather coarsely punctate, but the punctuation is obscured by the 
pubescence, which is mostly pallid except across the middle, where it is chiefly black. 
The scutellum and a space on each side of it bear pallid hairs. ‘The elytra have behind 
the scutellum a slender looped and angulate fascia of white hairs, and behind the 
middle a rather irregular band of spots, and before the tip there is another band. The 
amount of red varies, and the ground-colour of the elytra may be almost entirely 
black. ‘T'he legs are moderately stout, the tibiz with short stout sete externally. 
TROGODERMA. 
Trogoderma, Latreille, Régne Anim. éd. 2, iv. p. 511 (1829); Casey, Journ. New York Ent. Soc. 
vill. p. 151. 
This is a widely-distributed genus, but is a composite one as at present understood, 
