THE GENUS DENDEOCTONUS. 75 



SYNOPSIS OF LARVAL CHARACTERS. 



Abdominal tergites 8 and 9 without dorsal plates Division I. 



Abdominal tergites 8 and 9 ivith dorsal plates, except in section a3 Division II. 



DIVISION I. 



Front with or ivithout median convexity Su'bdi vision A. 



Front with transverse elevation slightly more prominent toward the sutures. 



Subdivision B. 

 Subdivision A. 



Front without median convexity Section al . 



Front ivith median convexity Section a2. 



Section al. 



Clypeus with apex suhacutely emarginate Species 1. 



Glypeus with apex broadly emarginate Species 2. 



Section a2. 



Prothoracic lobes ivithout foot calli Subsection bl . 



Prothoracic lobes with distinct foot calli Subsection b2. 



Subsection bl. 



Front smooth, with shining convexity; clypeus with apex broadly emarginate. 



Species 3. 

 Subsection b2. 



Front smooth, with median smooth convexity; clypeus with apex deeply emargi- 

 nate Species 4. 



Front with anterior third transversely rugose and with transverse median convexity, 

 produced toward apex; clypeus with apex broadly emarginate Species 5. 



Front with broad convexity; clypeus with apex truncated Species 8. 



Subdivision B. 



Front of head with posterior apex subacute; frontal elevation moderately stout in the 

 middle; clypeus with faint median tubercle toward the base Species 9. 



Front of head with posterior apex subobtuse; frontal elevation stout slightly posterior 

 to the middle; clypeus with a faint median groove and elevation toward base. 



Species 10. 



Front of head with posterior apex subacute; frontal elevation naiTow, situated in the 

 middle, not more distinctly elevated toward suture; clypeus with faint median 

 groove, without elevation Species 11. 



DIVISION II. 



Abdominal tergites 8 and 9 without dorsal plate, or with unarmed plates. 



Subdivision C. 

 Abdominal tergites 8 and 9 with armed plates Subdivision D. 



Subdivision C. 



Abdominal tergites 8 and 9 without dorsal plates Section a3. 



Abdominal tergites 8 and 9 with dorsal plates, excepting micans, in which 8 is un- 

 armed Section a4. 



