MALACODERMATA. 8317 
Resembles C. tricolor, but is smaller and much narrower, with the abdomen black, and 
the tibie and tarsi rufous. Dr. Horn says that the elytra are more coarsely punctured 
than in C. tricolor; they are not so in the specimens before me, compared with 
C. tricolor from Oaxaca; in the latter separate punctures are easily observable ; whereas 
in C. punctatus from Northern Sonora the punctuation is very close, confluent, and 
sometimes inclining to form ruge. The antenne are red at the base externally for 
four joints in the female, to which sex most of the specimens before me belong ; in the 
male the basal joint and the external side of the second one are yellow. 
ANTHOCOMUS (p. 114). 
6 (a). Anthocomus hepburnius. 
Nigro-piceus, nitidus; antennarum articulis basalibus et epistomate testaceis; prothorace rufo, bi-impresso, 
macula parva lineari nigra; elytris nigro-cyaneis, transversim subrugulosis, nitidis ; femoribus anticis basi 
late rufis. Long. 22 millim. 
Hab. Mexico, Pinos Altos in Chihuahua (Buchan-Hepburn). 
Head black, somewhat depressed in front between the eyes, and with a tubercle between 
the ‘bases of the antenne; the latter about equal in length to the head and thorax, 
rather more slender than in A. ventralis, Horn, and with the five basal joints testaceous 
beneath, the basal joint almost pitchy; labrum at its base pitchy, corneous; palpi 
and mandibles pitchy. Thorax not much wider than long, rich brick-red, not very 
shining, with a distinct spot, which is elongate and constricted in the middle; the 
surface of the whole disc finely alutaceous. Elytra not so long as in A. ventralis, 
more resembling those of A. discimacula, shining; when viewed sideways a transverse 
wrinkling will be observed, but the whole surface is subrugose; the humeral callus is . 
evident. Legs pitchy black, pale at the articulation of the coxe and femora ; front 
femora broadly red at the. base. Abdomen pitchy. 
Both this species and A. discimacula are rather near A. erichsoni, Lec. ; but they may 
be separated by the elytra not being clothed with a fine cinereous shining pubescence, 
- which I observe in specimens sent me as the latter from Texas. The present species 
also is a little like A. ventralis, but differs in many minute particulars, notably in the 
nearly black abdomen, and the distinct spot on the thorax. From A. discimacula, to 
which it is evidently nearly allied, many small differences seem to separate it, e. g. the 
tubercle on the head, the spot on the thorax being small and not reaching the front, 
&c. There is unfortunately but a single example of this insect, so that it is impossible 
to say to what extent the characters given may vary. 
9 (a). Anthocomus opalinus. 
Niger; ore, antennis, pedibus, prothoracis limbo laterali et basali, elytrorumque margine laterali, flavis, his 
olivaceis, obsolete punctatis. Long. 2 millim. 
Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
