40 ADEPHAGA. 
17. Copelatus impressicollis. (Tab. I. fig. 10.) 
Copelatus impressicollis, Sharp, Trans. Roy. Dubl. Soc. n.s. ii. p. 589. 
Hab. Muxico, Guanajuato (Dugeés, coll. Sallé), Puebla (Sallé), Oaxaca, Cerro de 
Plumas (Hoge) ; GuateMALa, San Gerénimo, Guatemala city, 5000 feet (Champion). 
This is a variable species, in size, colour, and in the striation of the elytra, the 
alternate strize being sometimes so much disintegrated and reduced that in extreme 
cases there may only appear to be five strize with some broken short lines between 
them; the colour of the wing-cases sometimes becomes almost yellow; and in Mexico 
the individuals appear to be usually of larger size than those from Guatemala. 
18. Copelatus distinctus. 
Copelatus distinctus, Aubé, Spec. Gén. p. 875"; Sharp, Trans. Roy. Dubl. Soc. n.s. ii. p. 590. 
Hab. Mexico }. 
This species is only known at present by a single female in the collection of the 
Brussels Museum. Now that I have seen a series of C. impressicollis, I am of opinion 
that C. distinctus is most likely only an extreme specimen of that species. Should this 
prove to be correct, the two supposed species will be united under the name given by 
Aubé, C. distinctus. 
19. Copelatus integer. 
Copelatus integer, Sharp, Trans. Roy. Dubl. Soc. n. s. ii. p. 590. 
Hab. Mexico, Cordova (Sallé), Jalapa (Hoge); GuatemaLa, Cubilguitz (Champion), 
Izabal (Sal/é); Nicaracua, Chontales (7. Belt); Bugaba, 800-1500 feet (Champion). 
The individuals found by Belt are larger, and have the wing-cases paler and their 
strize rather deeper than those from the Mexican localities; but these characters, unless 
confirmed by others, can scarcely be considered to be of specific value. 
20. Copelatus fragilis. 
Oblongo-ovalis, angustulus, nitidus, rufo-testaceus, prothorace, elytris abdomineque fuscis, illo lateribus elytrisque 
fascia basali testaceis ; his striis decem subtilibus elongatis, alternis paulo brevioribus, alteraque marginali 
antice abbreviata. , 
Long. 2, lat. 1 lin. 
Hab. Guatemaua, Paso Antonio, 400 feet (Champion). 
Antenne elongate, yellow. Thorax infuscate, with the sides yellow, the curved lateral 
series of punctules indistinct, the surface extremely feebly punctulate, with the sculpture 
slightly denser near the hind angles, but without any distinct impressions or scratches. 
Elytra with ten elongate rather fine striz, the first, third, seventh, and ninth attaining 
nearly the extremity, while the alternate strie, though elongate, are distinctly shorter ; 
