520 STAPHYLINIDA. 
plate, and a very minute circular spot on the next segment; the hind margin of this 
is produced into a very broad rounded lobe reaching as far back as the hind margin of 
the following segment; the female has no positive sexual marks. 
Only one pair was met with at San Gerdnimo, and one example at Guatemala 
city; this latter is a male with narrow head, without ventral lobe, and with a large 
fovea in place of a minute one on the fourth segment; it may prove to be a distinct 
species. 
33. Cryptobium crassulum. 
Minus gracile, subdepressum, piceum ; capite thoraceque nigricantibus, antennis rufis, pedibus testaceis; capite 
suboblongo, opaco, crebrius subobsolete punctato; prothorace minus gracili, crebrius fortiter punctato, 
medio sat late longitudinaliter levigato ; elytris dense vix fortiter punctatis, subopacis. 
Long. 11 millim. 
Hab. Mexico, Cuernavaca (Sal/é). 
This species is allied by its colour to C. tinctipenne, and by its shape and general 
appearance to C. derasum, but is readily identified by its considerably broader thorax, 
the length of this part being hardly at all greater than the width; the head is not 
very large, but little broader than the thorax ; the antenne are clear red in colour; the 
tibize a good deal darker than the femora; the elytra are about one third longer than 
the thorax. 
The two examples are in a bad state of preservation, and are females without positive 
sexual marks. 
34. Cryptobium certatum. 
Minus gracile, subparallelum, subdepressum, haud nitidum, piceo-rufum; capite thoraceque nigricantibus, 
antennis rufis, pedibus testaceis; capite suboblongo, opaco, crebrius subobsolete punctato; prothorace 
crebrius punctato, medio minus late longitudinaliter levigato; elytris densius fere subtiliter punctatis, 
subopacis, basi externe rufescente. 
Long. 83 millim. 
Hab. Nicaraeua, Managua (Sallé). 
The head is not large, not at all broader than the thorax ; this latter slightly narrowed 
behind, and but little narrower than the elytra. 
This species is readily recognizable by its form, though connected by means of 
C. crassulum with O. derasum and C. tinctipenne. Only one example, of the female 
sex, has been received. 
35. Cryptobium similipenne. 
? Lathrobium similipenne, Say, Trans. Am. Phil. Soc. iv. p. 153; Lec. Say’s Amer. Ent. ii. p. 568°. 
Cryptobium similipenne, Er. Gen. et Sp. p. 270’. 
Hab. Mexico ! 2, near the city (Flohr, coll. Sharp), Cordova (Sallé), Jalapa, Oaxaca 
(Hoge). 
