EUCNOCERUS.—CACCOLEPTUS. 649 
species, and must be considered as a very highly organized form.’ Not. only the 
antenne, but also the trophi, appear to be very different in the two sexes. In the 
female the maxillary palpi are short and very thick, the terminal joint being stouter 
than the preceding. 
1. Kucnocerus dispar, sp.n. (Tab. XIX. figg. 15, ¢; 15a, ¢ antenna; 
15 6, 2 antenna.) 
Oblongo-ovalis, sat convexus, niger, supra rufo-maculatus, pube variegata vestitus; antennis pedibusque 
testaceis, femoribus piceis, 
Long. 3-44 millim. 
Hab. Mexico, Temax in North Yucatan (Gaumer), 
This is the most remarkable species of the genus, so far as the structure of the 
antenne is concerned. It may be distinguished from the others by the fact that 
though there are white hairs on the upper surface, they are not anywhere concentrated 
into spots or bands. The form is extremely compact. The thorax is very short, 
strongly convex transversely, black, excessively finely punctate, clothed with an 
extremely fine tomentum, which, though chiefly black, is variegated with white and 
tawny hairs. Elytra black, much marked with red, minutely punctate, clothed with a 
very fine down, which is variegate so as to add to the mottled appearance without 
forming either spots or bands. Legs very slender. 
We have a series of about twenty specimens. The female is usually larger than 
the male. 
2. Eucnocerus anthrenoides, sp. n. 
Ovalis, convexus, niger, supra pube variegata vestitus; elytris basin versus rufescentibus guttisque albidis 
ornatis ; antennis pedibusque testaceis. 
Long. 3-4 millim. 
Hab. Mexico, Playa Vicente (Sal/é); Panama, Bugaba (Champion). 
This is a more oval and convex insect than E. dispar, and has well-marked white 
spots on the apical portion of the elytra. We have received a male from Bugaba, 
while the Mexican individual is a female. A third specimen, from Chontales, 
Nicaragua, is probably a rubbed and denuded example of this species, 
CACCOLEPTUS, gen. nov. 
Corpus rotundum, setosum. Antenne 11-articulate, subclavate ; clava 5-articulata. Prothorax utrinque ad 
antennarum receptionem profunde depressum. Mesosternum ante coxas brevissimum. . 
The extremely short mesosternum at once distinguishes this genus from 7 rogoderma, 
and the very broad rounded form will readily lead to its recognition. The clothing is 
more like hairs than the sete of TZ, rogoderma, and this and the form somewhat suggest 
an affinity with Zrinodes. The head when retracted is closely applied to the pro- 
BIOL. CENTR.-AMER , Coleopt., Vol. IT. Ft. 1, March 1902. 4 O* 
