and Central American Telephorinae. 25 



projecting from the internal sac on each side and the tip of a serrated 

 flagellum visible in the centre (figs. 4, 4a). 



Length (excl. head) 7-9 J, breadth 2J-3 mm. (c? ?.) 



Hab. Mexico {Truqui : ^J $), Xucumanatlan in Guerrero 

 {H. H. Smith : ,^), Oaxaca {Salle : c^). 



Three males and one female. The Oaxaca example 

 was found in the " Biologia " collection placed under the 

 long series of D. plicatum. In the male of this insect the 

 marginal notch of the prothorax is replaced by a deep 

 arcuate emargination extending from the middle to the 

 base (the hind angles thus appearing acute and prominent), 

 and the inner claw of the anterior tarsi is cleft at the tip 

 as in D. erosum. The genital armature, so far as visible, 

 is also different from that of D. plicatum. D. iticisum, 

 Gorh., is an allied form. D. bipunctatum, SchaefE., from 

 Arizona, seems to have a similarly shaped prothorax in 

 the male. 



5. Discodon carbonarium. 



Discodon carbonarium, Gorh., Biol. Centr.-Am., Coleopt. 



iii, 2, pp. 80, 285. 



Very elongate, narrow, shining, finely pubescent; nigro-piceous 

 or black, the anterior portion of the head in part, the base of the 

 mandibles, and sometimes the prothorax (an oblong spot or median 

 vitta excepted) also, testaceous or rufescent. Eyes very large and 

 prominent in (^, much smaller in $. Antennae slender, as long as 

 the body in cj, shorter in $. Prothorax (^ ) narrow, nearly as long 

 as broad, abruptly sinuato-emarginate from about the middle to 

 the prominent hind angles, binodose on the disc behind, the broad 

 space between the callosities flattened and often carinate; ($) 

 broader and more transverse, narrowing from near the base, the 

 margins narrowly reflexed and bisinuate. Elytra very elongate, 

 wider than the prothorax, subparallel. Inner claw of anterior 

 tarsi cleft and with a sharp triangular tooth at the base, and outer 

 claw of the other tarsi cleft, in ^. 



(J. Ninth ventral segment broad, widened outwards, angularly 

 dilated on each side at the apex and with the central portion broadly, 

 subangularly produced. 



Hab. Guatemala, Quiche Mts. and Cerro Zunil. 



Seven specimens seen, three having the prothorax in 

 part or almost wholly red. The male has the prothorax 

 and tarsal claws formed very much as in D. marginatum 



