530 STAPHYLINIDA. 
57. Cryptobium inquisitor. 
Nigrum, nitidum ; antennis piceo-rufis, pedibus testaceis, coxis fuscis; capite nitido, crebre fortiter, anterius 
parce, punctato; prothorace crebrius punctato, medio sat late longitudinaliter impunctato ; elytris quam 
prothorax vix longioribus, densius minus fortiter rugoso-punctatis. 
Long. 83 millim. 
Hab. GuateMata, near the city, Balheu, San Joaquin and Tamahu (Champion). 
Though allied to C. centrale this is a smaller and much narrower insect, with a 
differently shaped head, the eyes being but little prominent, and there being but little 
constriction in front of them; the third joint of the antenne is not longer than the 
second. The structure of the terminal ventral plate in the male is very remarkable: 
it is very deeply longitudinally impressed from the base to the apex, the impression 
being divided into three parts; the anterior is slightly narrower than the others, and 
its sides terminate as a minute denticle projecting backwards; the middle depression 
has an indefinite longitudinal elevation on its middle, while the apical one is cut away 
to a large extent by an elongate narrow notch. The fourth ventral plate projects 
behind as a rather narrow lobe, attenuate behind. The female has no positive sexual 
marks. 
58. Cryptobium monticola. 
Minus latum, subparallelum, nigrum, nitidum ; antennis piceo-rufis, pedibus testaceis, coxis fuscis, tibiis fusces- 
centibus ; capite suboblongo, nitido, crebre fortiter et profunde punctato; prothorace crebrius punctato, 
medio minus late longitudinaliter impunctato; elytris quam prothorax vix longioribus, densius minus 
fortiter rugoso-punctatis. 
Long. 8 millim. 
Hab. GuaTEMALA, Quiche mountains 7000 to 9000 feet (Champion). 
This species is extremely similar to C. inguisitor, but has a rather longer head, which, 
moreover, is a good deal more closely punctured, and the male characters are different ; in 
this sex the third ventral plate has in the middle behind a shining elevated space some- 
what like a flattened tubercle, in the middle of which there is a minute fovea, which is 
probably pubescent, and. on the middle of the next segment there is a similar space, but 
less elevated and destitute of fovea; the terminal ventral plate has in the middle 
behind a narrow deep notch, the anterior part of which is contracted and placed in a 
longitudinal depression ; at the front of this depression there is an excessively minute 
tubercle, and the depression is prolonged to the base of the segment as a slender longi- 
tudinal channel. The female has no positive sexual marks. Only three examples 
were obtained. Banks of streams in the pine-forest region (Champion). 
59. Cryptobium mexicanum. 
Minus latum, subparallelum, nigrum, nitidum ; antennis fusco-rufis, pedibus testaceis ; capite sat crebre, argute, 
anterius parce, punctato, nitido, oculis haud magnis ; prothorace crebre punctato, medio sat late longitu- 
dinaliter levigato; elytris quam prothorax vix longioribus, dense minus fortiter punctatis. 
Long. 84 millim. 
