and Central American TelepJwrinae. 71 



Hab. Mexico, Omilteme in Guerrero 8000 feet {H. H. 

 Smith). 



Twelve specimens, all females but one, four {(^ $) 

 belonging to the form selected as typical, and two of 

 the others having the prothorax in great part or almost 

 wholly black. The flavo-marginate form closely resembles 

 Pholinus nigridorsis, Gorh., from Oaxaca, except that the 

 dilatation of the elytral margin starts from below, instead 

 of at the shoulder ; the dark form was sent with a similarly- 

 coloured Photinus from the same locality. 



2. Photinomorpha dilaticornis, n. sp. (Plate III, fig. 7, $.) 



Discodon serricorne, var. ?, Gorh. Biol. Centr.-Am., Coleopt. 

 iii, 2, p. 288 (?). 



$. Broad, opaque, finely pubescent; black, the prothorax 

 orange, with or without a dark patch on the disc, the mandibles 

 rufescent. Head not visible from above, rather broad, the eyes 

 not prominent ; antennae short, stout, subserrate, gradually narrowed 

 towards the tip, joint 2 stout, fully one-half the length of 3. Pro- 

 thorax transverse, ample, semicircular, truncate at the base, broadly 

 explanate at the sides, the hind angles prominent, obtuse. Elytra 

 long, flattened and obsoletely costulate on the disc, at the base 

 parallel and not wider than the prothorax, abruptly and broadly 

 explanate from a little below the humeri. 



Length 11|-12J, breadth 5-5| mm. 



Hab. Mexico, Parada in Oaxaca {Salle), Oaxaca (Mus. 

 Brit.). 



Two females, distinguishable from the same sex of 

 Polemius (Discodon) serricornis, Gorh., by the wholly 

 black head, the shorter and less tapering antennae, with 

 larger and stouter second joint ; and the broader pro- 

 thorax, with more regularly rounded, strongly explanate 

 margins, and rather prominent hind angles. The specimen 

 in the British Museum was acquired in 1858. 



Polemius. 



Polemius, Leconte, Proc. Acad. Phil, v, p. 338 (1851), and 

 Trans. Am. Ent. Soc. ix, p. 55 (1881); Lacordaire, 

 Gen. Coleopt. iv, p. 359 (1857) ; Schaeffer, Journ. 

 N. York Ent. Soc. xvi, p. 61 (1908). 



Leconte referred three N. American species to this 

 genus, Cantharis laticornis, Say (= Telejphorus dubius, 



