CRYPTOBIUM. 531 
Hab. Mexico, Oaxaca (fége). 
This species greatly resembles C. inguisitor, but has a much more sparingly punctate 
thorax; and the male characters of the third and fourth segments are very different ; on 
the third segment there is in the middle behind a slightly elevated, round tubercle, 
impressed with a fovea, and on the fourth segment a very large, slightly impressed 
pubescent space, arcuate in front, nearly straight behind, without projecting lobe ; 
the terminal ventral plate has at the apex a long narrow excision, the front part of 
which extends forward into a deeply depressed oblong space; in front of this space 
there is another deep narrow depression, extending forward nearly to the base of the 
segment. Only one example has been obtained. 
60. Cryptobium lithocharinum. 
Minus elongatum, subdepressum, subparallelum, nitidum, piceum; capite thoraceque nigris, antennis, pedibus 
elytrisque ad humeros rufis ; capite quadrato, omnium densius fortiter et profunde punctato, nitido; pro- 
thorace crebre obsolete punctato, medio jongitudinaliter impunctato, pernitido; elytris quam prothorax 
paullo longioribus, dense minus fortiter punctatis, nitidis ; abdomine apicem versus crebrius argute punctato. 
Long. 73 millim. 
Hab. Panama, Bugaba 800 to 1500 feet (Champion). 
This is a very distinct species, with comparatively short and stout legs and antenne ; 
the labrum is but little prominent, and is apparently depressed, rather than divided, in 
the middle, without denticles. The only example obtained is a male, with a moderately 
deep, sharply-defined angular notch on the last ventral plate. I possess four or five 
allied, undescribed species from various parts of South America; C. curticorne, Er., 
from the Amazons valley, is also a cognate species. 
Banks of streams in dark places in the forest (Champion). 
61. Cryptobium ducale. (Tab. XIII. fig. 18.) 
Maximum, latum, supra planatum, nigerrimum, nitidum; capite sat elongato, cumque prothorace parce, fere 
grosse, punctato; elytris quadratis, fortiter et profunde punctatis. 
Long. 20 millim. (mandibulis clausis). 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
Third joint of the antenne very elongate, quite twice as long as the second. Head 
very shining, black, with some very large punctures irregularly distributed, and more 
numerous minute punctures. Thorax polished, with about six large punctures forming 
an irregular series on each side of the middle, and a very few others at the sides. 
Elytra flat, not quite so long as they are conjointly broad, shining black, coarsely 
and closely but not densely punctured. Hind body shining black, only obsoletely 
punctured. 
The unique example was found by beating the still attached withered leaves of a 
fallen tree in the dense forest; its sex is doubtful, but I think it may be a male, the 
3 YY 2 
