CRYPTOBIUM. 515 
The head is but little narrower than the thorax, and shining, with the exception of 
the depressed space between the tubercles. The thorax is rather broad, being about 
three fourths of the width of the elytra. 
This species is similar in form to C. formosum, but the hind body is concolorous 
with the anterior parts. Only one female was obtained in each locality; the one from 
Ventanas has a slightly broader head and narrower thorax than the type. 
aye 
20. Cryptobium mixtum. (Tab. XIII. fig. 14.) 
Planatum, parum latum, rufum, capite nigro, elytris fuscescentibus, basi apiceque plus minusve rufescentibus, 
abdomine ante apicem nigricante, pedibus testaceis ; capite oblongo, opaco, crebrius fere subtiliter punc- 
tato; prothorace nitido, dense, argute punctato, linea mediali levigata sat angusta. 
Long. 11 millim. 
Hab. Panama, Volcan de Chiriqui below 6000 feet (Champion). 
Antenne red, with the middle joints blackish; third joint nearly one and a half 
times the length of the second. Mandibles red. Head as broad as the elytra, oblong, 
black, quite dull; eyes convex, punctuation rather close, but not coarse, absent from a 
broad space behind the labrum. Thorax two thirds of the width of the elytra. Elytra 
distinctly longer than the thorax, somewhat shining, blackish, with the base distinctly, 
the apex indistinctly, red; densely, moderately finely punctate. Hind body rather 
coarsely punctate; the penultimate segment, and the segment preceding it, black. 
In the male the fourth segment beneath is furnished with an elongate lobe reaching 
farther back than the hind margin of the following segment; the lobe is broad and 
subacuminate behind, and there is a very obscure line of setigerous pubescence in front 
of its base, and on the preceding segment a more distinct line; the lobe of the fourth 
segment is sometimes entirely absent. The female has no positive sexual marks. 
Four examples were obtained of this species. It is an ally of C. fasciatum, Ex. 
21. Cryptobium chontalense. 
Planatum, parum latum, rufum, nitidum; capite nigro, elytris fascia lata abdomineque ante apicem nigri- 
cantibus, pedibus testaceis ; capite subopaco, crebre fortiter punctato. 
Long. 11 millim. 
_ Hab. Nicaracva, Chontales (Janson). 
This species is closely allied to C. mixtum, but differs in having the elytra shorter, 
only just longer than the thorax, &c. ‘The head is not so dull, and is more definitely 
punctured ; the elytra are more shining, more coarsely punctured, and the base and 
apex are rather broadly red. 
Only one example has been procured. It is without positive sexual marks, but is no 
doubt a female. 
3 UU 2 
