and Central American TelepJwrinae. 73 



Broad, opaque, black, the anterior portion of tlie liead, the base 

 of the mandibles, the prothorax (a patch on the disc excepted), 

 and sometimes the outer limb of the elytra indeterminately, flavous 

 or reddish -yellow. Head almost invisible from above, eyes somewhat 

 prominent in (^ ; antennae serrate, rapidly tapering towards the tip, 

 short in $, longer in o , joints 3-6 considerably widened in both sexes. 

 Prothorax strongly transverse, semicircular, truncate in front, broadly 

 explanate in both sexes; the sides feebly obliquely notched near 

 the base in (^ and slightly sinuate in $. Elytra in (^ narrower than, 

 and in $ as broad as, the prothorax, broadly explanate from a little 

 below the shoulder. Inner claw of anterior tarsi, and outer claw 

 of the other tarsi, broadly lobed in (^. 



cj. Ninth ventral segment rather convex, narrowed towards the 

 apex, the two spines projecting from the internal sac strongly 

 hooked at the tip. 



Hab. Mexico, Morelos, Oaxaca. 



This species mimics Photuris cyathigera, Gorli., and other 

 Lampyrids. One male and two females seen. It is dis- 

 tinguishable by the semicircular prothorax, which is feebly 

 notched just before the base in the male, the flavous anterior 

 portion of the head, the broadly explanate elytra, and the 

 stout, serrate, rapidly tapering antennae. The two spines 

 projecting a little beyond the tip of the ninth ventral 

 segment correspond to those mentioned under P. lugubris 

 as projecting at right angles from the evaginated internal 

 sac, but they are more hooked at the apex. The variety 

 ( ?) from Parada described by Gorham (loc. cit.) is referred 

 to a different species, Photinomorpha dilaticornis. 



2. Polemius lugubris. 



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



2, p. 85. 



Broad, opaque, black, the anterior portion of the head, the base 

 of the mandibles, and the flanks of the prothorax yellow, the disc 

 of the latter sometimes with two faint reddish marks. Eyes not 

 prominent. Antennae subserrate, stout, rapidly tapering towards 

 the tip, short in $, longer in ^, joint 2 small. Prothorax large, 

 strongly transverse, rugulose, broadly explanate in both sexes; 

 the sides rounded anteriorly, deeply, obliquely notched a little 

 before the base in (^, and slightly sinuate in $. Elytra about as wide 

 as the prothorax at the base, broadly explanate from a little below 

 the shoulder. Inner claw of anterior tarsi, and outer claw of the 

 other tarsi, broadly lobed in (J. 



