510 STAPHYLINIDZ. 
lata levigata; elytris quam prothorax bene longioribus, densius, profunde, sat fortiter punctatis, sub- 
nitidis ; abdomine sat crebre punctato. 
Long. 14 millim. 
Hab. Mexico, Oaxaca (Hoge). 
The head is elongate, and about as broad as the elytra, and the antenne are long and 
slender, with the third joint not quite twice as long as the second. The male has a 
rather long and rather narrow lobe on the fourth ventral segment, furnished with long 
pubescence, and at its base an indefinite, rather small space covered with very fine 
punctuation and pubescence; on the preceding segment is a rather short transverse 
setigerous depression. 
The male characters and the general appearance bring this species near to C. cepha- 
lotes, but it is well distinguished by the opaque head, longer elytra, and more numerous 
punctuation. Only one example has been found. 
7. Cryptobium longipenne. 
Cryptobium longipenne, Er. Gen. et Spec. Staph. p. 565°. 
Hab. Mexico !, Cordova (Sallé). 
This is apparently a rare species, as I have before me altogether only six examples 
all from old collections. The sexual characters were not described by Erichson; in 
the male there is a short setigerous space on the third ventral plate, and a circular 
fovea bearing a small tuft on the next segment; this segment, moreover, is produced 
so as to form a very long, narrow, convex lobe, not narrowed towards the extremity, 
which is somewhat rounded. The small series of examples appear to me to indicate 
two forms, which may possibly be distinct species—(1) a larger one, in which the female 
has setigerous areas on the hind body almost as 1 have described in the male, but no 
ventral lobe—to this form belong the two exponents from Sallé’s collection ; and (2) a 
smaller form with rather shorter elytra, in which the male has characters similar to 
those of the larger form, but the female has no positive sexual marks. 
8. Cryptobium adversum. 
Subdepressum, nigrum; antennis piceis, pedibus testaceis, coxis fuscis; capite oblongo-subquadrato, crebre 
fortius punctato, subopaco; prothorace cylindrico, crebrius fortiter punctato, medio linea lata impunctata ; 
elytris quam prothorax fere sesqui longioribus, dense, fortiter profundeque punctatis, subnitidis ; abdomine 
minus dense punctato. 
Long. 11 millim. 
Hab. Mexico, Jalapa, Oaxaca (Hoge). 
This species is very closely allied to C. cephalotes, but is much smaller, of more slender 
form, with less elongate antenne, and narrower thorax. It is almost equally similar 
to the smaller forms of C. longipenne, but has a less densely punctate head, this, more- 
over, being of slightly different form (slightly dilated in place of slightly narrowed 
