380 NITIDULIDA. 
(Blancaneaus); GuatumaLa, Zapote (Champion); Nicaragua, Chontales (Janson) ; 
Panama, Bugaba, Caldera, Volcan de Chiriqui (Champion). 
Head and thorax coarsely punctate, the latter broad, strongly bisinuate at the base, 
almost lobed in the middle, so that very little of the scutellum is visible. Elytra 
pubescent, and with fine serial pubescence not strongly different from the other pube- 
scence ; the punctures of the series are very closely placed, so as almost to form perfect 
strie ; there is one, rather irregular, series of punctures on each interstice. The 
pygidium is largely exposed; it is extremely densely punctate, and is rounded at 
the extremity. 
This appears to be the least rare of our species of the genus, we having received 
altogether about two dozen examples. 
B. Club of the antenne compact and broad, the terminal joint as broad as the tenth ; 
its colour black, fuscous, or quite pallid. 
* Club of the antenne black or fuscous. 
15. Cryptarcha cephalotes, sp. n. 
Oblonga, sat convexa, ferruginea, antennarum clava fusca ; elytris opacis, seriatim punctatis, subtilius pube- 
scentibus. 
Long. 4 millim. 
Hab. Guatemaua, San Gerénimo (Champion). 
Only a single example has been received of this species, but the following characters 
will permit of its certain recognition: the elytra are remarkably dull, but smooth as if 
greasy ; the pubescence is very short; the punctures in each series are remote from one 
another, and the interstitial punctuation is also serial, and in fact similar to the other, 
so that the elytra thus have numerous series of distant punctures. The mandibles 
are unequal, the right one being the longer, and they are dentate above before the 
extremity. ‘The head is large, more acuminate in front than usual, the sides nearly 
straight. ‘The pygidium is elongate, with the extremity rounded though narrow, a 
little reflexed. 
16. Cryptarcha puncticeps, sp. n. (Tab. XII. fig. 14.) 
Oblonga, sat convexa, ferruginea, antennarum clava fusca; capite pubescens, fortiter punctato; prothorace 
nitido ; elytris subopacis, seriatim subobsolete punctatis, fere epubescentibus. 
Long. 47 millim. 
Hab. Panama, Volcan de Chiriqui (Champion). 
This is another easily recognized species of which only one specimen has been 
obtained ; it is allied to C. cephalotes, but the punctuation and pubescence of the elytra 
are more obsolete; the difference between the sculpture of the head and that of the 
