196 MALACODERMATA. 
Towards the termination of the brown plagia on each elytron is a transverse fine 
angular line forming a broad V. The suture behind is clothed with ashy hairs; and 
the apex of the elytra is rufous. A single specimen. 
5. Ptinus brunneus. 
Ptinus brunneus, Dufts. Fn. Aust. iii. p. 65'; Boiel. Mon. p. 649°, t. 18. £. 24? 
Hab. Evrorvz, France, Sicily, Turkey!2; Norra America, United States ?—GuaTE- 
MALA, Duefias, El Tumbador (Champion). | 
The insect I refer to this species is so assigned with a good deal of doubt. “While 
the two specimens agree with the description of P. brunneus in many points, they differ 
in being smaller than I should expect, being only two millimetres long; the male is 
narrower than the female; the four teeth of the thorax are scarcely observable, if 
present. Still I think it may prove to be the same as the United-States species. The 
pile, arranged in serial lines, is very conspicuous in the male from El Tumbador, and 
it agrees with the figure very well. 
NIPTUS. 
Niptus, Boieldieu, Mon. Ann. Fr. 1856, pp. 290 et 662. 
The seven species of this genus from Europe and Asia Minor are separated from 
Ptinus on account of the body being ventricose in both sexes. Leconte has added 
one species from Kansas, with which I think the species here recorded is probably 
identical. 
1. Niptus ventriculus. 
Niptus ventriculus, Lec. Col. of Kansas, 1859, p. 13 1, 
Hab. Norra America, Kansas !.—Mexico, Cordova (Sal/é); GuatemaLa, Capetillo 
(Champion). | 
A single specimen in Sallé’s collection and one taken by Mr. Champion seem to me 
to be possibly this species. In our insect the elytra have rows of large punctures not 
very close, and a scanty irregular pile somewhat serially disposed. ‘The antenne are 
rather short, with subquadrate intermediate joints, the two apical longer. 
TRIGONOGENIUS. 
Trigonogenius, Solier in Gay’s Hist. de Chili, iv. p. 464 (1849). 
The typical species of this genus are small globose insects, with the thorax not 
constricted behind, and are clothed rather with scales than with erect hairs. The 
species included in the genus in the Munich catalogue from the Atlantic islands were 
