258 HETEROMERA. 
Found in abundance by myself in the open country in the vicinity of the city of 
Guatemala. 
2. Naucles basalis. 
Oblong ovate, rather narrow; the head ferruginous; the prothorax piceous or fusco-ferruginous; the elytra 
piceous, the shoulders and the sides towards the apex indeterminately testaceous or reddish; the upper 
surface very densely and minutely punctured, the punctures forming faint transverse strige on the pro- 
thorax and on the extreme base of the elytra only, very finely and thickly pubescent. Head moderately 
large, the eyes black; antenne as in N. tibialis, but with the joints 7-10 infuscate; prothorax about one 
half broader than long, moderately rounded at the sides ; beneath piceous; legs testaceous. 
Length 13-1} millim. 
Hab. Guatemaua, Capetillo, San Gerénimo (Champion). 
Two examples, one of which is a female. Closely allied to WV. tibialis; the elytra 
piceous with a spot at the shoulders and the sides towards the apex reddish or testa- 
ceous; the intermediate joints of the antenne infuscate. 
3. Naucles quercus. 
Oblong ovate, rather convex, entirely reddish-testaceous ; the upper surface very densely and minutely punc- 
tured, the punctures forming very fine transverse strige on the prothorax and on the extreme base of the 
elytra, very finely and thickly pubescent. Head, prothorax, and antenne much as in N. tibialis, the elytra 
more distinctly punctured; beneath ferruginous ; legs testaceous. 
Length 13 millim. 
Hab. Mexico, near the city (Flohr). 
Three examples, beaten from oaks in the vicinity of the city of Mexico, and recently 
forwarded to me by Mr. Flohr. Very near WN. ¢idiatis, from which it can only be distin- 
guished by its more convex and rather broader shape, larger size, and more distinctly 
punctured elytra. A mutilated example from Guanajuato (Sallé) perhaps belongs to 
the same species. 
4. Naucles affinis. 
Oblong ovate, rather narrow, still narrower in the male, brownish-testaceous ; the upper surface thickly clothed 
with fine silky pubescence, very densely and minutely punctured, the punctures forming very fine trans- 
verse strigze on the prothorax and on the extreme base of the elytra. Antenne brownish, with the basal 
joints paler; prothorax narrowing from the base, about one half broader than long, the sides feebly 
rounded ; beneath ferruginous ; legs testaceous. 
Length 13-12 millim. (¢ 9.) 
Hab. Panama, Pefia Blanca (Champion). 
Three examples. More elongate and less ovate than N. tibialis and MW. quercus, the 
elytra punctured as in the latter. 
