and Central American Telephorinae. 133 



peculiar structure of the maxillary palpi, the third joint 

 in this sex being produced on the inner side into a very 

 long slender straight process, which is nearly as long as 

 the stouter, sinuous, outwardly-directed fourth joint 

 (Plate IX, fig. 101). 



Maronius. 



Maronius, Gorham, Biol. Centr.-Am., Coleopt. iii, 2, pp. 100 

 (1881), 309 (1885). 



The type of this genus is M. dichrovs, and various other 

 Tropical American forms have been described by Pic. Its 

 chief characters are the short, broad, posteriorly constricted 

 head, the large eyes, the securiform apical joint of the palpi, 

 the simple antennae and tarsal claws, the toothed mandibles, 

 the quadrate prothorax, the greatly abbreviated elytra, the 

 broad, bilobate penultimate dorsal segment of the abdomen, 

 and the greatly developed asymmetric genital lobes of the 

 male, these being covered ventrally by an oval convex 

 cap. The species are larger and more robust than those 

 of the closely allied genus Belotus. In both these genera 

 segments 1-7 of the abdomen have an oblique tubuliform 

 process on each side arising from the space between the 

 two surfaces and a circular orifice at the tip of the conical 

 lateral protuberance of the penultimate dorsal segment, 

 see Plate III, fig. 15. The males have the terminal 

 segment broad and somewhat twisted, so that a portion of 

 the ventral aedeagal cap is often visible from above. 



1. Maronius dichrous. 



Maronius dichrous, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 100, pi. 6, fig. 9 {S). 



Hah. Mexico; Guatemala; Nicaragua. 



The specimens from Chiriqui added by Gorham in his 

 " Supplement," p. 309, must be separated. The genital 

 armature of M. dichrous is figured on Plate VII, figs. 40, 

 40a, and the (^ abdomen on Plate III, fig. 15. 



2. Maronius longicollis, n. sp. 



Maronius dichrous. var., Gorh., loc. cit. p. 309, pi. 12, 

 fig. 17 (?). 



Very like M. dichrous, but with the prothorax, except at the 

 anterior or hind angles, or along the sides posteriorly, infuscate or 



