Tribe 12. Hybocephalini 



In a regional study such as the present paper, this tribe is difficult to 

 integrate. There is a single hybocephaline genus in the neotropics (Ephimia) , 

 and this genus differs from other genera of the tribe in having two equal tarsal 

 claws. This tribal abnormality taken together with the nonbilobed and simple 

 second tarsal segment, and general habitus and pubescence runs an example 

 either to the Ctenistini or Tyrini — never to the Hybocephalini! 



The species are very uncommon and the distribution peculiar, so that a 

 close comparison of a specimen with the generic characters will serve to isolate 

 a member of this genus in the neotropics. 



EPHIMIA (Reitter, 1882) 



Reitter (1882, 1883) 

 Sharp (1887) 

 Raffray (1904, 1908) 



One of the strangest facts concerning Ephimia is its distribution. It is 

 entirely insular, with two species in the West Indies and the third species in 

 the Pearl Islands. Thus both sides of Central America are inhabited, without 

 any species yet described from the mainland. 



Head longer than wide, with prominent eyes placed behind the middle, 

 very short oblique tempora; narrowed anterior of the eyes to form a long 

 truncate vertex terminating in an antennal tubercle. The antennae are sub- 

 contiguous, eleven-segmented, the segments closely articulated with the inter- 

 mediate segments transverse and a three-segmented club. Maxillary palpi four- 

 segmented: first small, visible, subglobular; second arcuate, slender at base, 

 elongate and apically inflated ; third obconical, about as wide as second ; fourth 

 much larger, ovoidal, apically acuminate, with stiff pubescence and a minute 

 palpal cone. 



Pronotum slightly longer than wide, convex, with three large, free, densely 

 pubescent basal foveae of which the median is very visible from a dorsal 

 view but the laterals far down on the sides. 



Elytra each with a large basal pubescent fovea, and sutural stria but with- 

 out definite humeral angle and no dorsal stria. 



Abdomen with five visible tergites, the lateral margins very widely and 

 strongly margined as in Tyrini; six stemites in both sexes. Intermediate, and 

 posterior, coxae widely separated. Intermediate legs macrosceline, the legs 

 thick and long; tarsi thick and short, three-segmented, with the first segment 

 small, last two relatively larger, but the second is only about half as long 

 as the third, the third bearing two short equal claws. 



(289) 



