DRYOPS. 121 
2. Dryops puncticollis. 
Elongatus, convexus, niger, subtus indumento griseo vestitus, abdominis segmento ultimo nudo, dense punctato ; 
prothorace in medio densissime fortiter punctato, versus latera granulato; elytris opacis, versus latera 
granulatis, ibidemque indumento sordido vestitis, interstitiis tribus prope suturam subnudis. 
Long. 34, lat. 14 lin. 
Hab. Mexico, Oaxaca (Sailé). 
This insect is very similar to D. productus, but belongs to the group of the genus 
having the terminal ventral segment bare. It is readily distinguished from all the 
others known, by the very coarse and dense punctuation of the thorax, and from all 
except D. productus by the superior size. The legs are long and stout, very rough, and 
the tarsi are pitchy black in colour. 
A single badly preserved individual is the only one I have seen. 
3. Dryops fastigiatus. 
Parnus fastigiatus, Say, Long’s Exp. ii. p. 275 *. 
Helichus basalis, Lec. Proc. Ac. Phil. 1852, p. 43°. 
Helichus fastigiatus, Horn, Tr. Am. Ent. Soc. 1870, p. 33°. 
Hab. Nortu America !?, from Canada to Columbia and Illinois ?.—Mzexico, San Juan 
Coscomatepec (Sal/é). 
A single individual in very bad condition is the only evidence yet extant of the 
occurrence of the species in Mexico. Although this example appears to exhibit all the 
characters mentioned by Horn® as characteristic of Say’s species, yet it would be 
satisfactory to examine better-preserved individuals before deciding whether the Mexican 
insect is really conspecific with that found in the United States. 
4. Dryops suturalis. 
Helichus suturalis, Lec. Proc. Ac. Phil. 1852, p. 43°; Horn, Trans. Am. Ent. Soe. iv. p. 33°. 
Hab. Nortsa America !?.—Mexico, Guanajuato (Sal/é). 
The exponents of this species before me from Mexico, as well as those from 
California, are so covered with strong incrustation that it is not possible to obtain an 
exact idea of their sculpture; but they appear to be conspecific. Horn informs us? 
that Leconte described three individuals of this insect as distinct species; so that it 
would appear that the species is a variable one. 
5. Dryops elmoides. (Tab. IV. fig. 5.) 
Suboblongus, parum elongatus, supra opacus, fusco-ferrugineus, subtus luteus, prosterno et metasterno in medio 
abdominisque segmento ultimo ferrugineis; corpore ubique xqualiter subtiliterque granulato; elytris 
seriebus punctorum subobsoletorum. 
Long. 13, lat. 2 lin. 
Hab. Guatrmaa, Mirandilla 1700 feet (Champion). 
BIOL. CENTR.-AMER., Coleopt., Vol. [. Pt. 2, December 1882. RR 
