= 
EUSPHYRUS. 371 
The Central-American species of which I know the male can be grouped as 
follows :— 
A. 
B. 
C. 
Mid tibia of ¢ with a curved mucro, and before it a small tooth: minaz and analis. 
Mid tibia of ¢ with a single sharp mucro: unicolor, ros, and mucronatus. 
Mid tibia of g with a small black ridge or lobe at apex bearing a comb of short spines at the 
edge: fragilis, tonsor, irpex, and circulus. 
Key to the Central-American Species. 
. A brown or black, nearly circular, sutural patch or ring on middle of elytra 
extending outwards to the fourth stria; mid tibia of ¢ slightly dilated at 
Segment 9 of antenna about as broad as long . 
BIOL. CENTR.-AMER., Coleupt., Vol. LV. Pt. 6, December 1906. 
m. 
3 CC 
apex, the dilatation bearing a comb of short spines at the longitudinal edge. Species No. 1. 
No such ring or patch . . Loe b. 
b. Upperside evenly luteous-grey ; a black lateral patch from shoulder to apical 
declivity of elytron, reaching above to the third stripe . Species No. 2. 
Upperside evenly grey, without markings ; mid tibia of ¢ with an acute mucro. Species No. 3. 
Upperside grey and brown C. 
c. Upperside brown, marked with sharply- defined grey "spots d. 
Grey markings not sharply defined, or upperside grey marked with brown é. 
d. White dots of pronotum very numerous ; pronotum rather strongly plicate- 
reticulate ; elytra very densely granulate Lo. ew ee ee) «Species No. 4. 
White dots of elytra few in number; pronotum finely reticulate ; mid tibia 
of ¢ with a curved mucro Soe ee ; ; Species No. 5. 
e. A brown, median, sutural patch on elytra, straight behind, separated from 
brown lateral area by a luteous-grey line situated in fifth interspace and 
extending from luteous-grey basal area backwards; grey mesial vitta of 
the smooth pronotum not interrupted ; mid tibia of ¢ simple Species No. 6. 
; Elytra differently marked Loe f. 
f. Pronotum feebly coriaceous, practically smooth gy: 
Pronotum more or less distinctly plicate-reticulate . . . Sj 
g. Subbasal callosity of elytra prominent; apical declivity grey, ordered in 
front by a broad, brown, transverse band Species No. 7. 
Subbasal callosity of elytra not prominent . ae h. 
h. Elytra with large brown patch or band behind middle . i. 
Elytra marmorated with brown and grey Species No. 8. 
i. Mid tibia of ¢ with a simple mucro . Species No. 9. 
Mid tibia of ¢ with a small black apical ridge, which bears a comb of short 
spines at the longitudinal edge Species No. 10. 
j. Pronotum unicolorous . . . . ee ee ee ee k. 
Pronotum variegated . l. 
k. Pubescence of upperside creamy-buft Species No. 11. 
Pubescence of upperside whitish-grey Lo . Lee Species No. 12. 
1, Segment 9 of antenna half as long again as apically broad, as long as 
segments 7 and 8 together Species No. 13, 
