110 Rev. H. S. Gorham's materials for a 



Sec. III. — 6. Three segments luminous. 

 Photuris i^ennsylvanica, De Geer. Ins. iv., p. 52. 



This species, or very closely-allied varieties which I am 

 not at present able to separate, has a very extended range, 

 from Canada to the equator. Specimens of the typical 

 form have the elytra dark fuscous brown with pale margins, 

 suture, and a single vitta starting from the humerus and 

 varying in length. This form appears to be Teleplwroides 

 vittigera. Mots. 



Canada, Montreal, Quebec, &c. ; U. S. Michigan, Penn- 

 sylvania, &c. ; Guatemala, Zapote ; all collections. 



Var. — a. Elytra nigro-picea, margine et sutura tantum 

 flavis. T. lineatocollis. Mots., Quebec. Mus. Brus., 

 "Am. bor."; coll. Gorh. 



Var. — /3. Latior, pallidior, elytris striga pallida inter- 

 vittam humeralem et suturam, alteraque ante marginem. 



Mexico ; Mus. Brus., coll. Gorh., Guatemala, Zapote, 

 Capetillo, San Geronimo ; Nicaragua, Chontales ; Costa 

 Rica ; British Honduras, Rio Sarstoon ; coll. Godman and 

 Salvin. 



Var.—"y. Elytris totis fuscis.^ 

 Antilles ; Mus. Brus. 



Var. — S. Minor, elytris et thorace sordide fuscis. 

 Antilles ; Mus. Brus. 



Var. — e. Tota pallida, elytris vittis et marginibus segre 

 distinctis, dilutioribus. 



Columbia ; Mus. Brus., Guiana ; Demerara ; Costa 

 Rica; coll. Gorh., Panama; Chiriqui ; coll. Godman and 

 Salvin. 



The male has larger eyes, two segments before the apical 

 eburatcd, yellowish, and emarginate ; the apical produced 

 but not spiniform. 



Fhoturis frontalis, Leconte Proc. Ac. Phil, v., p. 337, 1852. 



United States, Texas. ^ coll. Gorh. 



Thorax coarsely punctuate, hind angles scarcely pro- 

 duced, male with the two subapical segments deeply emar- 

 ginate, head yellow. 



