NOSODERMA. 49 
coarse, shining, black granules, crowded on the elevations and at the sides and in front, the space between 
the elevations usually clearer, with a central smooth line distinct at the base, the base slightly produced, 
subtruncate; elytra with prominent raised lines and elevations, and rows of shallow impressions, the 
raised lines arranged thus—a line distinct only towards the apex, starting from the base and ending 
abruptly beyond the middle in a long, rounded elevation, a line slightly sinuous, prominent, and uninter- 
rupted throughout, starting from the base and ending short of the first, a short line obsolete in front and — 
not reaching the base, and a short marginal line starting from the shoulder and not reaching the middle, 
some distance beyond the termination of the second line, but nearer the first, is an isolated rounded 
elevation, sometimes with one or two other smaller elevations a little before the apex, base broadly 
emarginate, shoulders rounded, the margins closely crenulate, apices rounded, and very slightly divergent 
at the suture, the surface with coarse scattered granules. Antenne with intermediate joints longer than 
broad and submoniliform. Beneath closely and coarsely granulate, fifth ventral segment smoother. 
Length 15-20 millim. 
Hab. Mexico (coll. F. Bates), Orizaba, Jacale (Sallé), Las Vigas, Jalapa (Hoge). 
This species is labelled WV. papulosum, Chev., in the Sallé collection, and is rather 
common in Mexico. Hoge found it in numbers at Jalapa. 
Allied to NW. exsculptum, but with the rows of elevations on the elytra more prominent 
and less interrupted, the thorax comparatively a little broader behind, and the hind 
angles more prominent and less obtuse. 
13. Nosoderma exsculptum. 
Elongate, rather narrow and depressed, dull black, clothed with dark brown scales. Head rather smooth; 
prothorax much longer than broad, narrowed and sinuate behind, hind angles obtuse, and almost rounded, 
base a little produced and subtruncate, with a more or less distinct, smooth, central line or channel from 
base to apex, and the disc with a sinuous (sometimes not very prominent) elevation on each side, the 
elevations well defined externally by a deep impression, and internally by a smooth sinuous space, the 
surface with scattered, rather coarse, smooth, black granules, the granules crowded along each side of the 
central line and on the elevations; elytra with interrupted raised lines or ridges, and some rounded 
elevations towards the apex, and the intervals with irregular rows of shallow impressions, the elevations 
arranged thus—an indistinct ridge (more or less interrupted or obsolete towards the base) starting from 
the base and ending some distance before the apex in a rounded elevation, a ridge (much interrupted 
behind, but distinct towards the base) starting from near the shoulder and ending before the first in a 
similar rounded elevation, a short interrupted ridge not reaching the base and ending in a line with the 
first, and a marginal ridge indistinct, a little beyond the termination of the ridges and in a line with them 
are one or two rounded elevations, the surface with scattered granules arranged in rows on the elevations, 
less numerous and irregularly placed in the depressions, the margins towards the apex somewhat coarsely 
denticulate, the base feebly emarginate, shoulders rounded, slightly impressed transversely before the 
middle, the apices slightly divergent at suture and separately rounded. Antenne with intermediate 
joints submoniliform. 
Length 12-21 millim. 
Hab. Mexico (coll. F. Bates), Jalapa (Hoge), San Antonio de Arriba, Jacale, Durasnal 
(Sallé). 
This is the commonest species of Nosoderma in Mexico. Hoge captured it in great 
abundance at Jalapa. 
Some very small examples (12 millim. in length) from Durasnal, San Antonio, and 
Jalapa have the elevations of the elytra more interrupted and prominent, especially 
towards the apex. 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, August 1884. HH 
