312 RHYNCHOPHORA. 
a. Tarsal claws small, connate; elytra with two oblique pallid fascie ; 
mesosternum not protuberant. [PRomecors, sensu stricto. | 
a’, Elytral sete abundant, long, erect. . . . . . . . . « « . © vtator, Fahr. 
b'. Elytral sete scattered, short,decumbent. . . - . . . . « « . wumobrata, Fahr. 
b. Tarsal claws free. [Subgen. PRomecopsis, n. n.| 
c'.. Mesosternum conically protuberant ; tarsal claws rather long. 
a’. Anterior tibie in g armed with a long, acute, oblique tooth near 
the tip, the intermediate pair also toothed and abruptly excavate 
near the apex in thissex . . . . . . . . ee. « « « Uunidentata, sp. n. 
b>. Anterior and intermediate tibize without subapical toothin g . . . Jleucothyrea, Fahr. 
d', Mesosternum simply convex or flattened, not protuberant. 
c?, Vestiture of the upper surface variegate: prothorax bi- or trivittate, 
the elytra with one or two more or less distinct oblique pallid 
fasciee. 
a*. Third joint of anterior tarsi with a dentiform process on inner 
lobe abovein @. 2. 2. ew eee ee ew we es) dentimanus, sp. n. 
6°. Third joint of anterior tarsi without process in ¢. 
a‘, Anterior tibiz armed with three iong, projecting, hooked teeth 
in g,feebly tridentatein 9... ..... . =. . . tridentata, sp. nv. 
b*. Anterior tibiz not dentate along their inner edge. 
a’. Elytra with the alternate interstices raised and set with 
scattered, clubbed, setiform scales . . . . . . . . . Clavisetis, sp. n. 
b°. Elytral interstices equal, moderately or feebly convex. 
a’. Elytra with scattered, long, suberect sete on the alternate 
interstices . 2. ee ee ew we ee . alternans, sp. n. 
b°. Elytra with numerous short, curled, decumbent sete along 
each interstice. . . . 1. - 6 we . brevisetis, sp. n. 
d’, Vestiture of the upper surface uniformly coloured, the elytra at most 
with a faint transverse post-median darker fascia; legs very stout 
In Sow ee we ee we ee we ew ee ww we uniformis, sp. n. 
1. Promecops viator. (Tab. XIV. figg. 21, 21a, 3.) 
Promecops viator, Fahr. in Schénh. Gen. Cure. vi. 1, p. 832*. 
Length 31-5, breadth 14-2} millim. (¢ 9.) 
Hab. Mexico (Dupont1, Mus. Holm.; Mus. Brit.; Truqui), Puebla, Orizaba, 
Toxpam (Sallé), Cordova (Sallé; Hoge ; Knab, in U.S. Nat. Mus.), Jalapa (Hoge ; 
Smith, ex Wickham), Cerro de Palmas, Oaxaca (Hoge). 
A. common insect in Mexico. It is the only Mexican species of the genus with long, 
erect, stiff, seriately arranged sete down each interstice of the elytra and small connate 
tarsal claws. ‘Ihe markings are very variable and sometimes indistinct. The elytra 
in well-marked examples have two oblique pallid or whitish fascie (one, before the 
middle, not reaching the suture, the other subapical and complete) and the rest of 
