CRYPTARCHA. 375 
as in one the internal segment bears long hairs which project at the extremity of the 
body. 
2. Cryptarcha guatemalena, sp. n. 
Oblongo-ovalis, convexa, ferruginea, dense punctata, pubescens, antennarum clava nigra; pygidio apice 
depresso et emarginato. 
Long. 63 millim. 
Hab. Guatemata, San Gerénimo (Champion), Coban (Conradt). 
This species is very similar to C. longidens, but has the mandibles simple, short, 
and emarginate at the extremity. The lines of pubescence on the elytra are scarcely 
distinguishable. The pygidium is very densely punctate, deeply depressed, or indented, 
towards the extremity, the hind margin emarginate, and each angle’ ciliate. 
Only one example has been obtained from each locality; I can see no difference at 
all between the two. I should have been glad to treat this as the female sex of 
C. longidens ; but as that species has been procured only in Mexico, and I think pos- 
sibly in both sexes, and this only in Guatemala, I am obliged to treat C. guatemalena 
as distinct. 
3. Cryptarcha sanguinea, sp. n. 
Suboblonga, parum convexa, rufa, capite prothoraceque fusco-rufis ; elytris nigris, post scutellum vage rufo- 
signatis; antennis testaceis, clava nigra; crebre punctata et pubescens, punctura et pubescentia in elytra 
seriatis. 
3 ns 
Long. 32 millim. 
Hab. Guatemata, Capetillo (Champion). 
Club of the antenne rather small. Head narrow, somewhat coarsely punctate. 
Thorax rather short, fuscous, rufescent about the margins, somewhat coarsely punctate, 
with a greyish pubescence, somewhat shining; base distinctly bisinuate. Elytra 
rather long, with numerous equal lines of punctuation and griseous pubescence. 
Pygidium red, much exposed, very densely punctate, depressed in the middle towards 
the extremity, which is truncate. Under surface clear red. 
We have received only one specimen of this species, and I am unable to open the 
mandibles, but have little doubt that they are short and equal. 
4. Cryptarcha nigra, sp. n. (Tab. XII. fig. 8.) 
Oblonga, convexa, nigra, antennis tarsisque rufis, pubescens, sat fortiter punctata ; elytris seriatim, interstitiis 
fere seriatim, punctatis. 
Long. 4-44 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Club of the antenne rather large, the terminal joint large. Mandibles stout, in the 
male a little longer than in the female, and unequal, the right one being longer and 
more curved. Head rather large, moderately coarsely punctured, the sides concavely 
