412 RHYNCHOPHORA. 
seen south of Texas, and the Mexican insects standing under that name in collections 
are referable to 7. vestita or T. soror. The described forms are difficult to distinguish ; 
those inhabiting Mexico may be separated thus :— 
a. Prothorax with a small denuded spot on each side at the base, 
rarely obsolete. 
a’. Prothorax usually with a large partially denuded space on the 
| flanks; rostrum short and more or Jess curved in both sexes ; 
body flattened above. 
a’. Ventral segments 3 and 4 bare at the base, the vestiture of 
the basal depression of ¢ different from that of the rest 
ofthe surface . . . . 2. . . wwe Ove stit0a, Boh. 
6’. Ventral segments 3 and 4 with their median third bare, the 
vestiture of the basal depression of ¢ similar to that of 
the rest of the surface . . . . 1... ee) «omucorea, Lee. 
6’. Prothorax with at most one or two small bare spots on the 
flanks, usually entirely albo-squamose. 
c’. Rostrum short and curved in both sexes; body somewhat 
convex above, with the vestiture denser and rather coarse. compacta, Casey. 
d*, Rostrum short and feebly curved in g, much longer and 
almost straight in ¢ ; body flattened above, with the 
vestiture finer . . 2. 1. ee ee ee we) «SOFOF, SP. NT. 
6. Prothorax without denuded spots at the base ; body narrow. 
c’. Vestiture moderately coarse, above and beneath . . . . . pellicea, Boh. (tevana, Lec.). 
d’. Vestiture coarser, the scales on the under surface broader. . cylindrica, Casey. 
1. Trichobaris vestita. (Tab. XX. fig. 22, ¢.) 
Baridius vestitus, Boh. in Schénh. Gen. Cure. iii. p. 718' (part.) (nec op. cit. vill. p. 171, 27). 
Hab. Mexico! (Trugui, in Mus. Brit.), Guanajuato, Toxpam, Etla (Sallé), Orizaba 
(H. H. Smith), Jalapa (M. Trujillo), Mexico city, Cerro de Plumas, Oaxaca (Hége), 
Cuernavaca, Cordova (U.S. Nat. Mus.), Puente de Ixtla (Wickham), Tehuantepec 
(Mus. Brit.). 
The name vestita is here applied to the form common in Vera Cruz and Oaxaca; the 
female subsequently described in Schonherr’s work? is no doubt referable to 7. soror. 
The present species (sunk as synonymous with 7. trinotata, Say, by Leconte, and 
queried as possibly identical with 7. mucorea, Lec., by Casey) has the rostrum short 
and abruptly bent downward from the base in both sexes (fig. 22), the prothorax 
usually with a large space on the flanks almost bare, and the depressed space cn the 
basal half of the abdomen of the male thickly clothed with coarse, long, radiating 
scales. 7’. vestita is a little less elongate than 7’. mucorea, the rostrum is less curved 
(appearing more abruptly gibbous at the base), the median space on the ventral 
segments 3 and 4 is denuded at the base only, and the depression of the male is clothed 
