342 RHYNCHOPHORA. 
1. Plocamus echidna. (Tab. XVII. figg. 26, 26 a.) 
Euchetes echidna, Lec. Proc. Am. Phil. Soc. xv. p. 320’. 
Eunyssobia echidna, Casey, Ann. N. York Acad. Sci. xv. p. 680”. 
Hab. Norru America, [linois!, Ohio, Kentucky, and Iowa ?.—GuvaTEMALA, Pantaleon, 
Pacific slope (Champion). 
The single specimen of this remarkable insect obtained in Guatemala has the large 
white scales on the elytra condensed into a transverse patch at the middle of the base, 
another at the middle of the sides, an elongate streak on the suture below the base, 
and a common X-shaped patch along the suture at the apex. ‘These markings vary 
somewhat in extent in the N.-American examples sent me by Capt. Casey, Mr. Wickham, 
and the U.S. National Museum. The sete are very long, erect, and rigid in this 
insect. 
2. Plocamus clavisetis, sp.n. (Tab. XVII. figg. 27, 27a, 2.) 
Subelliptic, flattened above, piceous; variegated above with a dense crust of large, adherent, greyish-white, 
brown, and blackish scales, the blackish scales on the elytra condensed into a transverse or subtriangular 
patch on the inner part of the disc beyond the middle, several patches along the sides, and a few small 
scattered spots, the under surface with a uniform whitish crust; the upper surface also set with short, 
stout, erect, clubbed, scattered sete, which extend along the thickened basal portion of the rostrum. 
Eyes rather small, distant from the anterior margin of the prothorax. Rostrum long, curved, slender, 
somewhat abruptly thickened towards the base in the g, more elongate and more gradually widened 
basally in the 9. Prothorax transverse, strongly constricted in front; densely punctate, nodose on the 
disc and along the sides, the disc also with an obliquely depressed space on each side of the shallow 
median channel. LElytra a little wider than the prothorax, depressed along the suture anteriorly ; 
punctate-striate, the interstices densely punctulate. 
Length 14-23, breadth $-1,, millim. (¢ 9.) 
Hab. Guatema.a, Livingston, Trece Aguas (Schwarz and Barber, in U.S. Nat. Mus.), 
Chacoj in Alta Vera Paz, Pantaleon (Champion). 
Found in abundance at Chacoj (La Hamaca) in the valley of the Polochic, the 
specimens varying considerably in size. More flattened than P. echidna, the long 
rigid bristles replaced by very short, stout, clubbed sete, the markings of the elytra 
very similar to those of P. hispidulus, the rostrum less abruptly widened at the base, 
especially in the female. This species, like P. hispidulus and P. hystrix, inhabits the 
low hot regions of both the Atlantic and Pacific slopes. 
3. Plocamus hispidulus. (Tab. XVII. figg. 28, 28a, ¢.) 
Plocamus hispidulus, Lec, Proc. Am. Phil. Soc. xv. p. 8320'; Casey, Ann. N. York Acad. Sci. vi. 
p- 682°. 
Hab. Nortu America, Southern United States 1, Washington }, Maryland 2, &c.— 
GuateMaLa, Livingston (Barber, in U.S. Nat. Mus.), Chacoj in Vera Paz, Zapote 
(Champion). 
