ZOPHERUS. 4] 
‘bituberculate. Beneath black, shining, with scattered coarsish punctures, which are finer and closer together 
towards the last ventral segments, ventral callosity emarginate and with a large rounded swelling in the 
centre in front; flanks of the thorax with a few large coarse impressions. 
Length 17-23 millim. 
Hab. Mexico (coll. F. Bates), Juquila, Parada, Capulalpam (Sallé), Mexico city 
(Hage). 
This is probably not distinct from Z. levicollis, a species described by Solier from a 
single worn example. The description is from a beautiful fresh specimen, in the Sallé 
collection, from Juquila; others from Parada, Capulalpam, and Mexico city are inter- 
mediate and with the tubercles of the elytra more irregular, but arranged in more or 
less distinct rows; the sculpture of the upper surface of the thorax varies a great deal, 
and cannot be relied upon as a specific character; the ventral tubercle is trilobed in 
front in all the specimens I have examined. The examples I refer ta Z. levicollis are 
much abraded (apparently), and almost entirely black and shining; the thorax in some 
specimens is smooth, in others with small flattened tubercles and a few scattered 
impressions ; the elytra with coarse irregular elevations, often more or less confluent, or 
in the form of transverse wrinkles. In the long series of specimens before me 
intermediate forms are to be found. 
6. Zopherus tuberculatus. (Tab. II. fig. 3.) 
Head dull black, with a triangular white occipital patch ; prothorax convex, the sides very feebly trisinuate 
(almost rounded before the middle) and finely crenulate towards the base, white, the disc with a broad 
black patch extending from the base to the anterior margin [the white colour extending a little inwards 
about the middle], and some scattered black spots towards the sides, almost smooth except for a few 
indistinct flattened tubercles on the disc and some scattered fine punctures, base subtruncate and the 
margin punctured; elytra of an elliptic form, convex, white, with five regular rows of flattened black 
tubercles arranged thus—a sutural row small running one into the other towards the base, separate at 
apex, a row of about eight larger and almost touching the sutural row, a row of about seven the same 
size, a row similar, and a marginal row small of about eight or nine, the third and fourth rows with the 
spots wider apart and more distinct one from the other, the spaces between the tubercles with small black 
spots, the shoulders prominent, apex bituberculate and the tubercles flattened and not very prominent. 
Beneath black, slightly shining, with scattered punctures finer towards the last ventral segment, ventral 
callosity produced in the centre of the anterior margin. 
Length 20 millim. 
Hab. Mexico, Tehuantepec (Sal/é). 
One example. Allied to Z levicollis, but longer, not so convex, thorax proportion- 
ately broader at the base; the tubercles are flatter and less raised, though prominent, 
than in the allied species. 
7. Zopherus maculatus. 
Head dull black, with a triangular white spot between the eyes; prothorax convex, sides trisinuate and 
crenulate towards the base, white, with scattered small black spots and with four ill-defined larger ones on 
the disc—one at the base extending forwards, one near the anterior margin, and one on each side near the 
middle; elytra rather convex, shoulders prominent, white, with rows of black tubercles arranged thus—a 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, August 1884. GG 
