CRYPTOBIUM. 519 
solete punctato, peropaco ; prothorace cylindrico, crebre fortiter punctato, medio longitudinaliter levigato ; 
elytris quam prothorax longioribus, crebrius fortiter punctatis; abdomine parce punctato. 
Long. 10-12 millim. 
Hab. Panama, San Miguel in the Pearl Islands ( Champion). 
This species is closely allied to C. collare, and particularly resembles it in the 
punctuation of the head and thorax, but the examples are not half the size, and the 
upper surface is concolorous. The male has a transverse setigerous impression emitting 
two small tufts near the hind margin of the third ventral plate, and on the following 
segment a very obscure transverse setigerous mark; the hind margin of this segment 
may be either simple or produced to form a very broad moderately short lobe; the 
female is without positive sexual marks. Three examples were captured. 
Banks of small streams (Champion). 
31. Cryptobium jejunum. 
Subdepressum, nigrum, nitidum; antennis rufis, pedibus testaceis; capite subquadrato, crebrius fortiter 
argute punctato, opaco; prothorace cylindrico, crebre fortiter punctato, medio longitudinaliter levigato ; 
elytris quam prothorax paullo longioribus, crebre fortiter profunde punctatis, nitidis. 
Long. 11 millim. 
Hab. Guatemata, Torola 1000 feet (Champion). Four examples. 
This differs from the preceding species by the deep definite punctuation of the head 
and the coarse less dense punctuation of the wing-cases; by these characters it more 
resembles C. similipenne, but the punctuation of the head in C. jejunum is much 
coarser, and the ventral lobe of the male is narrower; in other respects the male 
characters are similar to those of C. similipenne, there being a rather long transverse 
line bearing sete on the third segment, and on the next segment a rather small and 
deep nearly circular tuft-bearing fovea; the ventral lobe of this segment is rather 
short, reaching to the hind margin of the following segment, and is much attenuate 
behind, its apex, however, being quite rounded. 
32. Cryptobium derasum. 
Subdepressum, nigrum; antennis rufis, pedibus testaceis; capite subquadrato, crebre subobsolete punctato, 
opaco, inter oculos parce argute punctato, nitido; prothorace cylindrico, crebrius fortiter punctato, nitido, 
linea mediali impunctata; elytris quam prothorax longioribus, crebrius sat fortiter punctatis, nitidis. 
Long. 11 millim. 
Hab. Guatemata, near the city, and San Gerénimo (Champion). . 
This species is another very close ally of C. stygicum, and the elytra are one third 
longer than the thorax, as in that species, but they are rather more coarsely punctate 
and shining, as in C. modestum; the punctuation on the basal portion near the suture 
is rugulose; the species is, however, readily distinguishable by the shining spot on the 
head near the front. The male has a small setigerous impression on the third ventral 
