RHAGODERA. 445 
Front coxe approximate . . . . . . . we eee ee) ~Deretaphrine. 
Front coxe distant . 2... 1... 1. ee ee ) «<Bothriderine. 
Tarsi 4-jointed ; terminal joint of maxillary palpus minute, aciculate. 
Prosternum entire infront . . . . ee ew ew ww ee) 6 Ceryline. 
Prosternum separated from flanks by a deep fissure . oe ee . Lapethine. 
Tarsi 3-jomted; visible portion of hind coxa minute, globular, widely 
separated from the side-piece . . . . . . . . « . « « « = Discolomine. 
Subfam. RHAGODERINAL. 
This group was distinguished by Horn as having antenne without club, and not 
capable of being hidden under the head. This definition, however, applies also to 
some of the Gempylodine (which were not known to Horn, there being none of them 
in the N.-American fauna) and must therefore be amplified. The Rhagoderine have 
the tibie slender at the tip, while they are angularly prominent externally in the 
Gempylodine. In this latter group the antenne are inserted in contiguity with the 
very large eyes; whereas in Rhagoderine the small eyes are separated by a very evident 
space from the point of the antennal insertion. 
The genus Anchomma has not been found in our region, although it occurs in 
N. America and in Chili (coll. Fry). 
RHAGODERA. 
Rhagodera, Erichson, Naturg. Ins. Deutschl. iii. p. 255, nota (1845) ; Horn, Proc. Am. Phil. Soc. 
xvi. p. 558. 
This genus consists of two North-American species. 
1. Rhagodera tuberculata. 
Rhagodera tuberculata, Mann. Bull. Mosc. 1843, 2, p. 300'; Horn, Proc. Am. Phil. Soc. xvii. 
p- 559°. 
Hab. Nortu America !, Alaska to San Diego and Arizona ?.—Mexico, Tehuacan in 
Puebla (Hége). 
The individuals of the small series found in our region apparently only differ from 
a specimen from Arizona by their rather smaller size and slightly more prominent 
hind angles of the thorax. 
The very great extension of this species, from Alaska to Central Mexico, is most 
remarkable, and suggests that a careful comparison should be made of individuals 
from different localities, with a view of ascertaining whether all really belong to one 
species. 
