XANTHOLINUS. 479 
10. Xantholinus serpens. 
Rufo-obscurus, sat nitidus ; capite nigricante, oblongo-ovali, utrinque sat crebre et sat fortiter punctato ; pro- 
thorace seriebus discoidalibus irregularibus circiter 12-punctatis, ad latera anterius punctis sat numerosis 
adjectis ; elytris quam prothorax haud longioribus, sat fortiter punctatis. 
Long. 9 millim. 
Hab. Mexico, Oaxaca (Hége). 
Antenne moderately stout, scarcely thicker externally, second and third joints 
moderately long, the latter distinctly the longer. Head rather long and narrow, with 
numerous rather regularly placed moderately coarse punctures, not at all crowded, and 
with a longitudinal space along the middle, smooth. Thorax a little narrowed behind, 
the dorsal series of punctures rendered irregular by some additional punctures placed 
outside them, and near the sides in front with numerous punctures, which may be 
described as an indistinct oblique series of about ten punctures extending a great part 
of the length of the thorax, and outside this series in front with a few other punctures 
about eight in number, and two or three punctures near the hind angles. LElytra 
irregularly and rather coarsely punctured, the punctures most numerous about the 
suture, and with a not very definitely separated discoidal series. Head beneath dull, 
not coarsely, and rather sparingly, punctured. 
This isan obscure species, without any salient character, though not very closely 
allied to any other; the prosternum has on its posterior part between the coxe a very 
small carina, which is not prolonged in front. Only one example has been found. 
11. Xantholinus mexicanus. 
Fusco-piceus, sat nitidus ; capite nigricante, antennarum basi palpis pedibusque rufis ; parum punctatus ; capite 
ad latera remote punctato; prothorace seriebus discoidalibus 7-punctatis, elytris quam thorax paulo 
brevioribus. 
Long. 8 millim. 
Hab. Mexico, Jalapa (Hoge). 
Second and third joints of the antenne moderately long, subequal. 
little narrowed in front, its surface as well as that of the thorax very finely transversely 
strigose, so that it is rendered somewhat dull; the latter is elongate, distinctly narrowed 
behind, the punctures few and distant, there being only five or six on each side in 
addition to the dorsal series; elytra with only a few distant punctures. Under surface 
of the head with only a very few punctures; prosternum carinate; body beneath more 
rufescent than above; terminal joint of the maxillary and labial palpi slender but 
Head convex, a 
elongate. 
One example. 
12. Xantholinus brachypterus. | 
Piceus, sat nitidus ; capite nigricante, pedibus rufis; capite utrinque sat crebre minus fortiter punctato $ pro- 
thorace seriebus discoidalibus 8- vel 9-punctatis ; elytris quam thorax multo brevioribus, 
Long. 7 millim. 
