236 RHYNCHOPHORA. 
a. Humeri angularly projecting laterally ; elytra with the sutural region 
gibbous at posterior third ; species very large, viridi- or czruleo- 
squamose, prothorax and elytra with small scattered black spots. . . 16-punctatus, L. 
6. Humeri less prominent laterally, obliquely truncate in front. 
a’. Seriate punctures on elytra more closely placed. 
a?, Vestiture cinereous, brownish, bluish, or green. 
a’. Prothorax and elytra each with four or more black spots. 
a‘. Spots on elytra widely scattered. 
a’. Eyes very prominent ; prothorax subconical in 9; vestiture 
cinereous or olivaceous »- . . . . es we ee) Omodestus, Gyll. 
6°. Eyes less prominent; prothorax campanulate in ¢; vesti- 
ture green or greenish-cinereous . . . . . . . . . forreri, sp. n. 
b*. Spots on elytra clustered into two transverse fascize on the 
disc, the rest of the vestiture cinereous . . . . . . . Jautus, Lec. 
6°. Prothorax with two (basal) spots only, the humeri also with a 
spot beneath, the rest of the vestiture uniformly cinereous . . 4-punctatus, sp. n. 
c®, Prothorax and elytra immaculate or nearly so, the alternate 
interstices of the latter sometimes darker, the vestiture variable 
incolour . . . . ee eee ee ee ewe) modestus, Gyll., var. 
b?. Vestiture uniformly green on the prothorax and elytra, cupreous [viridans, Boh. 
on the head and under surface . . . 1. . we we we Oroseiventris, sp. n. 
6‘. Seriate punctures on elytra scattered; vestiture cinereous, elytra 
fusco-bifasciate ; surface somewhat shining. . . . . . . . . yucatanus, sp. n. 
1. Cyphus 16-punctatus. 
Curculio 16-punctatus, Linn. Syst. Nat., 10th edit.,1. p. 386°; Mus. Lud. Ulr. p. 58 * (specific name 
misprinted 6-punctatus in margin); Drury, Ill. ii. p. 74, t. 49. fig. 4°; Oliv. Ent. v. no. 83, 
p. 298, t. 2. figg. 17 a, 6*; Fabr. Syst. Eleuth. ii. p. 509°. 
Cyphus sedecimpunctatus, Schoénh. Gen. Cure. i. p. 625° ; vi. 1, p. 148%. 
Cyphus hilaris, Perty, Del. Anim. Art. Bras. p. 74, t. 15. fig. 6°. 
Cyphus nigropunctatus, De}. in Mus. Brit.’. 
Hab. Costa Rica (Van Patten).—Soutn Amzrica?+®, Colombia, Venezuela, Guiana, 
Brazil 78, &c. 
We have five specimens of this conspicuous Tropical-American insect from Van 
Patten’s Costa Rican collection, though this locality seems to require confirmation. 
These examples agree with others before me from Oolombia and Venezuela. ‘They 
are densely clothed with small green or pale blue scales; the prothorax and elytra 
together with sixteen small, sharply-defined, black spots—two on each side of the 
prothorax and six on each elytron, the one beneath the shoulder not visible from above 
and thy one near the suture sometimes transversely arcuate ; the intermediate and 
posterior femora spotted with black. The elytra have laterally projecting, angular 
humeri, and the sutural region gibbous at the commencement of the apical declivity, 
