444 HETEROMERA. 
Hab. Mexico, Mochitlan in Guerrero (Baron), Amula in Guerrero (H. H. Smith), 
Jalapa (Hoge), Cordova, Oaxaca (Sallé). 
Of this species, the locality for which is not mentioned by its describer', we have 
received fifteen examples. The head is black or bronze-black, the thorax reddish-yellow, 
with a small black spot on either side of the middle of the disc, the elytra cyaneous or 
green. The head and thorax are shining, very sparsely, finely punctate, the latter 
transverse, rounded at the sides, more or less distinctly canaliculate, and transversely 
depressed in front; the elytra are finely scabrous-punctate ; the antenne are short and 
stout, with submoniliform joints, the fourth and fifth thickened in the male; the outer 
spur of the hind tibie is stout, the inner one slender. The sixth ventral segment is 
very deeply, the fifth broadly and arcuately, emarginate in the male. Varies in length 
from 10-17 millim. A specimen from Jalapa is figured. 
13. Cantharis koltzei. 
Lytta koltzei, Haag, Berl. ent. Zeitschr. 1880, p. 38 (excl. var. cyanescens) *. 
Cantharis monilicornis, Dugés, La Naturaleza, v. p. 142, t. 4. figg. 8, 3a, 6 (1881) *; An. Mus. 
Michoacano, ii. p. 96 (excl. var.) *. 
Hab. Mexico, Uruapan??, Moroleon ®, and Valley of Mexico? (Dugés), Mexico city 
(Dr. Palmer), Guanajuato, Toluca (Sal/é); Panama (coll. Haag *). 
Both Haag and Dugés seem to have confused two closely allied species under one 
name; the variety they mention differs constantly from the type in the very much more 
deeply emarginate sixth ventral segment in the male. 
In C. koltzei, 3, the sixth ventral segment is depressed in the middle and rather 
deeply triangularly emarginate ; the fifth segment is feebly emarginate; and joints 4-6 
of the antenne are thickened. C. koltzei also has the head and thorax duller and more 
closely punctured, the thorax more transverse. Dugés* gives the colour as black, 
Haag! as “eenescent.” ‘The six specimens before me (four @ and two ¢, including 
one named by Dugés) have a faint violaceous lustre. 
Both species occur in the vicinity of the city of Mexico. 
14. Cantharis cyanescens. 
Lytta koltzei, var. cyanescens (Dej.), Haag, Berl. ent. Zeitschr. 1880, p. 38°. 
Lytta cyanescens, De}. Cat. 3rd edit. p. 246°. 
Cantharis monilicornis, var., Dugés, An. Mus. Michoacano, ii. p. 97°. 
Hab. Mexico !? (coll. F. Bates), Quiroga (Dugés *), Esperanza, Mexico city (Hége). 
In the male of this insect the sixth ventral segment is very deeply emarginate (the 
emargination extending to three-fourths the length of the segment), with the lateral 
processes considerably prolonged ; the fifth segment is deeply arcuate-emarginate ; and 
