488 COLYDIIDA. 
9. Lithophorus succineus. 
Bothrideres succineus, Pascoe, Journ. Ent. i. p. 108, t. 5. fig. 3°; 1. p. 93°. 
‘Elongatus, niger, opacus, elytris longitudinaliter tuberculatis, singulo medio bigemmato. 
Long. 3-53 millim. 
Hab. Mexico, Paso de San Juan in Vera Cruz (Hége); Guaremaua, El Tumbador, 
El Reposo (Champion).—Amazons, Ega?, Paré+; Brazit, Rio Janeiro } 2, 
Antenne piceous, terminal joint almost invisible. Head very coarsely punctate. 
Thorax narrow, oblong, its surface rather uneven ; on the middle is a narrow rhomboidal 
depression continued forwards as a faint channel, and also prolonged as a channel 
behind till arrested by a small elevation ; outside this latter there is a short tortuous 
channel, on each side a sharp tubercle. Elytra longand narrow; suture depressed and 
flat ; the third and fifth interstices costate, the coste, however, interrupted and irregular, 
each of them in the middle with a small translucent piece like a jewel or fine amber ; 
the outer parts with numerous rough tubercles or denticles. Under surface coarsely 
punctured, dull. Legs long. 
Although similar to LZ. gemmifer, this insect is easily separable by the different 
sculpture of the thorax. The example found at El Reposo, though only half the 
normal size, seems really to belong to the same species. 
In his comments on B. succineus Pascoe pointed out? that it should probably form a 
new genus. 
BOTHRIDERES. 
Bothrideres, Erichson, Naturg. Ins. Deutschl. iii. p. 288 (1845) ; Horn, Proc. Am. Phil. Soc. xvii. 
p- 586. 
This is apparently one of the most widely distributed of the genera of Colydiide, and 
is likely to prove rich in specific forms. About. forty species have been described up 
to the present time. | 
1. Bothrideres setiger, sp.n. (Tab. XV. fig. 19.) 
Elongatus, supra deplanatus, ferrugineus, piliferus ; prothorace fortiter punctato, lateribus in medio denticu- 
latis, dorso vage impresso ; elytris interstitiis ineequalibus, alternis fere costiformibus. 
Hab. Guavemata, near the city, Capetillo, Zapote, Cerro Zunil (Champion). 
Var. minor, pallide ferrugineus. 
Long. 23-34 millim. . 
Hab. Guatemaua, near the city, Capetillo ( Champion). 
Thorax subquadrate, but distinctly narrowed behind, the front angles not produced 
but minutely acute; the sides with a well-marked denticle in the middle ; the surtace 
coarsely punctate, the disc with a vague elongate impression, which is slightly 
deeper at its commencement and termination, the intervening space being usually 
