COLASTUS. 275 
Head very wide, coarsely punctate. Thorax with the base scarcely at all bisinuate, 
the hind angles just about rectangular, the surface closely, coarsely, and deeply punctate. 
Elytra with dense pubescence, and very regular closely-placed series of punctures. 
Dorsal segments of hind body coarsely punctate. 
The six examples received of this species are all females; it may be distinguished 
from all the others I have seen of the genus by the fact that when it is looked at beneath 
there is a slight excision seen at the side of the thorax close to the hind angle, thus 
giving the angle the appearance of projecting minutely outwards. 
14. Colastus chiriquensis, sp. n. (Tab. VIII. fig. 16.) 
Perdepressus, supra fuscus testaceo-variegatus, pubescens, subopacus, dense fortiter punctatus, subtus pedibus 
antennisque rufis, harum clava fusca; prothoracis angulis posterioribus subobtusis. 
Long. 4-5 millim.; lat. 2 millim. 
Hab. Guavemaua, Sinanja (Champion); Panama, Volcan de Chiriqui ( Champion). 
Head very coarsely punctate. Thorax rounded at the sides, the hind angles not at 
all produced backwards, but slightly acute, the surface very coarsely punctate, the punc- 
tures evenly distributed, the disc not flattened, a large rufous patch along the middle, 
the sides near the hind angles vaguely rufescent. Elytra short and broad, the surface 
opaque, serially punctate, the punctures finer than those on the thorax ; near the base of 
each elytron is a small indefinite red mark. Hind body coarsely punctate, the segments 
red along the middle. The hind margin of the terminal ventral segment in the male is 
rather feebly bisinuate, and the lateral denticles are almost invisible. 
We have received seven examples of this species; the variegation of the colour of the 
surface is not constant, and not much importance can be attached to it. 
15. Colastus simplex. (Tab. VIII. fig. 15, ¢.) 
Colastus simplex, Murray, Trans. Linn. Soc. xxiv. p. 274°. 
Colastus simplex, var. sallei, Murray, 1. c.” 
Colastus brevicollis, Murray, t. c. p. 271°. 
Hab. Mexico 2, Cordova (Sallé); Guatemata, Chacoj, Teleman (Champion); Panama, 
Bugaba, Volcan de Chiriqui 2500 to 4000 feet (Champion).—AMazonSs, Fga 3, Santarem 1. 
Apparently a rare species, only one specimen having been obtained in each locality : 
sometimes the elytra are red. I can see no distinction of importance between C. simplex 
and C. brevicollis, Murray, and adopt the former name as being accompanied by the 
better description. 
16. Colastus punctiventris, sp. n. (Tab. VIII. fig. 17, 2 .) 
Nigerrimus, parcius brevissime pubescens, dense et fortiter punctatus ; abdominis segmentis ultimo et penultimo 
densissime punctatis, antennarum basi tarsisque rufis. 
Long. 4 millim.; lat. 2 millim. 
2N* 2 
