466 SERE1C0KNIA. 



d\ Antennae extending considerably beyond the hind angles of the 

 prothorax in the male j the tubercle at the base of the latter 



prominent ; elytra mucronate at the apex radians. 



h". Prothorax without distinct^ vesicles ; upper surface testaceous or rufo- 

 testaceous, with a broad median vitta on the prothorax, the scutellum, 

 and the elytra at the sides from before the middle to the apex, broadly, 

 black restinctus. 



1. PyrophorUS noctillicns. (Tab. XX. fig. 18, genitalia, cT.) 



Elater noctilucus, Linn. Syst. Nat. 10th edit. i. p. 404 (1758) *; De Geer, Mem. Ins. iv. p. 160, 

 t. 18. fig. 11 (1774) 2 ; Oliv. Ent. ii. no. 31, p. 15, t. 2. fig. 14a 3 ; Herbst, Kafer, ix. p. 331, 

 t. 158. fig. 1 4 . ^ 



Pyrophorus noctilucus, Eschsch. in Thon's Archiv, ii. 1, p. 32 5 ; Germ. Zeitschr. fur Ent. iii. 

 p. 13 6 ; Cand. Monogr. Elat. iv. p. 14 \ 



Pyrophorus divergens, Eschsch. loc. cit. p. 32 8 . 



Pyrophorus nyctophanus, Germ. loc. cit. p. 12 9 . 



Pyrophorus phosphorescens, Germ. loc. cit. p. 19 10 . 



Hah. Mexico (Salle, ex coll. Sturm) ; Costa Rica ( Van Patten). — Tropical South 

 America 2 3 4 7 to Brazil 5 8 9 ; Antilles 4 6 7 , Cuba, San Domingo, Jamaica 2 9 , Guade- 

 loupe 9 10 . 



There is a specimen of this species (mixed with the series of P. strabus) in the Salle 

 collection, from that of Sturm, labelled " Mexico " ; and we have received another from 

 Van Patten, as from Costa Rica. This is the only evidence we have of this species 

 occurring in Central America, where it is replaced by P. pellucens. The Mexican 

 habitat requires confirmation. In P. noctilucus the presternum is raised on either side 

 between the> coxse and declivous behind them, the process thence to the apex being 

 horizontal ; in the allied P. pellueens the presternum is not declivous behind the coxae, 

 and the process is extended horizontally from the intercoxal portion. 



2. PyrophorUS Strabus. (Tab. XX. figg. 19, genitalia, 6 ; 19 a; base of 

 abdomen.) 



Pyrophorus strabus, Germ. Zeitschr. fur Ent. iii. p. 15 *; Sturm, Cat. p. 67 2 ; Cand. Monogr. Elat. 



iv. p. 16 3 . 

 Pyrophorus latemarius, Sturm, in litt. 



Hab. Mexico 1 2 3 (Salle, ex coll. Sturm), Santecomapan, Cosamaloapam, Teapa, 

 Oaxaca (Salle), Misantla, Jalapa (Hope) ; British Honduras (Blancaneaux). 



Not uncommon in Eastern Mexico, and also extending into British Honduras, whence 

 we have received two specimens. This species resembles P. pellucens, but has larger 

 and more oblique vesicles on the thorax, the flanks of the latter immaculate, and the 

 abdomen, when detached from the body, shows a much broader luminous space at the 



