386 SEEEICOENIA. 



b". Elytra with a sutural stria only, the others obliterated ; each elytron 

 with two flavous spots — one, small, marginal, before the middle, 



the other, larger, towards the apex quadrinotatus. 



b'. Apical margins of the elytra feebly serrate or subcrenulate. 



c". Elytra obsoletely striate ; brownish-testaceous, with the suture and 



a transverse median fascia infuscate cruciatus. 



d". Elytra distinctly striate. 



c'". Elytra elongate, usually brownish-testaceous or rufo-castaneous . sturmi. 



d'". Elytra moderately elongate, pitchy -brown frontalis. 



b. Hind angles of the prothorax unicarinate ; apical margins of the elytra 

 denticulate. 

 e". Elytra obsoletely striate, brownish-testaceous; antennae very elon- 

 gate, rather slender longicornis. 



f". Elytra with a sutural stria only, the others obsolete, dark reddish- 

 brown, each with three yellow spots ; antennas moderately elongate, 

 rather stout stellatus. 



1. Physorhinus erythrocephalus. 



Elater erythrocephalus, Fabr. Syst. Eleuth. ii. p. 241 \ 



Physorhinus erythrocephalus, Cand. Monogr. Elat. ii. p. 389 2 . 



Elater flaviceps, Perty, Del. Anim. Artie. Bras. p. 21, t. 5. fig. 2 3 . 



Physorhinus flaviceps, Blanch, in d'Orbigny's Voyage dans TAmer. Merid., Ins. p. 136, t. 8. fig. 7\ 



Hab. Panama, Bugaba (Champion). — South Ameeica 12 , Colombia, Venezuela 2 , 

 Guiana, Brazil 3 , Amazons, Bolivia 4 . 



Five specimens of this well-known Tropical- American species were captured by 

 myself at Bugaba. 



2. Physorhinus distigma. (Tab. XVII. figg. 7, $; 8, var. cephalicus, d; 

 9, var. /3, <s .) 



Physorhinus distigma, Cand. Monogr. Elat. ii. p. 390 \ 



Hab. Mexico 1 , Cordova (Salle), Jalapa (Edge), Atoyac in Vera Cruz (E. E. Smith) ; 

 Guatemala, Teleman and Purula in Vera Paz (Champion) ; Nicaeagua, Chontales 

 (Belt); Panama, Bugaba, Volcan de Chiriqui, David (Champion). — Colombia 1 ; Beazil. 



Yar. a. The flavous or reddish spot on the disc of each elytron towards the apex more elongate, in some 

 specimens extending forwards to the middle. (Fig. 8.) 



Physorhinus cephalicus, Cand. Ann. Soc. Ent. Belg. 1889, p. 97 (Elat. Nouv. iv. p. 31) 2 . 



Hab. Mexico 2 , Cerro de Plumas, Tapachula (Edge), Teapa in Tabasco (E. E. Smith) ; 

 Beitish Hondueas, Belize (Blancaneaux) ; Guatemala, Teleman, La Tinta, San Juan, 

 Senahu, Chacoj, Tamahu, Panima, Purula, and San Geronimo in Vera Paz, El 

 Tumbador, El Reposo, Las Mercedes, Pantaleon, Zapote (Champion), Coban (Conradt); 

 Nicaeagua, Chontales (Belt, Janson). 



