50 
HETEROMERA. 
14. Nosoderma anceps. 
Closely allied to WV. exsculptum, but comparatively shorter and broader; the thorax shorter, less narrowed 
towards the base, and the elevations stronger; the margins of the elytra more closely denticulate. 
Length 15-22 millim. 
Hab. Mexico, Jalapa, Mexico city (Hoge). 
Probably not distinct from WV. exsculptum, and taken by Hoge at the same locality. 
15. Nosoderma impressum. 
Allied to WV. ewsculptum, but broader; the thorax wider in front, more narrowed and sinuous behind, the 
elevations stronger, the hind angles a little more prominent, the granules coarser, more scattered, and less 
regularly arranged; the elytra strongly and broadly impressed on each side before the middle, the 
elevations more interrupted and irregular, those towards the apex stouter and stronger, those towards the 
base curving inwardly and interrupted by the impressions, the shoulders are slightly truncated obliquely, 
the apices a little divergent at the suture and separately rounded, the margins towards the apex some- 
what coarsely denticulate, the granules a little coarser and more scattered. Antenne with the intermediate 
joints longer than the rest and obconic. 
Length 17-20 millim. 
Hab. Mexico (coll. F. Bates), Jacale (Sallé). 
Five examples. Sometimes labelled WV. denticulatum, Sol.,in collections; it does not 
agree, however, with the description or figure of that species; it is perhaps a form of 
N. 
exsculptum. 
16. Nosoderma sparsum. (Tab. II. fig. 12.) 
Elongate, narrow and rather depressed, dull black, sparsely clothed with dark brown scales, the surface 
(except the head) with scattered, shining, rather coarse granules. Head smooth; prothorax much longer 
than broad, a little narrowed towards the base, the anterior angles broadly rounded and produced, hind 
angles slightly prominent and obtuse, base a little produced and subtruncate, the disc with a long sinuous 
ridge on each side, between which and the lateral margins there is a large shallow impression, the granules 
on the disc larger, coarser, and more scattered than on the ridges and at the sides, with a smooth central 
line distinct from the middle to the base, obsolete in front; elytra broadly flattened, the suture raised and 
with interrupted ridges, only one of which is at all distinct, this starting from the middle of the hase ends 
some distance before the apex in a rounded but not very prominent elevation, the margins a little raised 
and with a short rounded elevation a little beyond the termination of the dorsal ridge, between the eleva- 
tions are irregular rows of smooth, shallow impressions, the elevations with fine shining granules closer and 
more crowded along the suture than towards the sides, shoulders rounded and not prominent, base broadly 
and feebly emarginate, apices not divergent at the suture, but equally rounded. Antenne with the ninth 
joint much broader than the eighth, last joints very broad and rounded at the apex. The thorax beneath 
coarsely, the meso- and metasternum and ventral segments more finely and closely, granulate; fifth ventral 
segment smooth, and with a few fine raised points towards the hind margin, 
Length 16-19 millim. 
80 
of 
Hab. Guatemaua, Desconsuelo, Pachoc, Totonicapam (Champion). 
This species is pretty common under loose bark of fallen pines at elevations of from 
00 to 11,000 feet. 
Proportionately longer and narrower than any of the allied species, and the elevations 
the elytra less prominent. 
