and Central American Telephorinae. 23 



2. Discodon incisum. 



Discodon incisum, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 79. 



Elongate, narrow, shining, finely pubescent; testaceous, the 

 eyes, antennae, legs (the base or greater part of the femora, and 

 sometimes the tibiae also, excepted), and in one specimen (from 

 Cerro Zunil) the suture and outer limb in part, black or piceous 

 Antennae very long, subfiliform. Eyes large and prominent in c^, 

 smaller in $. Prothorax transverse, with explanate strongly re- 

 flexed margins, bicallose on disc behind; in (^ (type) deeply an- 

 gularly notched at the sides at about the basal third and slightly 

 hollowed thence to the prominent hind angles (in immature examples 

 with the sides abruptly arcuato-emarginate from about the middle 

 and the hind angles, in consequence, more acute) ; in $ broader, 

 narrowing from about the basal third, and with the margins tri- 

 sinuate. Elytra very elongate, wider than the prothorax, sub- 

 parallel. Inner claw of anterior tarsi triangularly dilated at base 

 and cleft at tip, and outer claw of the other tarsi cleft at tip, in (^. 

 Last dorsal segment (= pygidial plate of Gorham) of ^ greatly 

 developed, extending beyond the comparatively short cleft seventh 

 ventral segment. 



cJ. Eighth ventral segment very short, broad, broadly subtruncate 

 at the apex, two stout hooks visible within the internal sac [ninth 

 segment not examined]. 



Hab. Guatemala. 



Amongst the six males of this species before me, one 

 only (the type, from San Geronimo) has the sides of the 

 prothorax definitely notched, the notch in the others 

 (which are all more or less immature) being lost in the 

 broad arcuate emargination of the lateral margin. It is 

 just possible, therefore, that there are two species still 

 confused under D. incisum. The form of the tarsal claws 

 was not mentioned in the original description, a character 

 separating the present species from D. nigripes. D. 

 abdominale, Schaefi., from Nogales, Arizona, is said to be 

 an allied form. 



3. Discodon marginatum. (Plate VIII, fig. 51, prothorax, ^.) 



Discodon marginatum, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 80 {nee p. 286). 

 Elongate, rather shining, finely pubescent; testaceous, the eyes 

 black, the head with a spot on the vertex, the antennae (the base 



