164 Mr. G. C. Champion's Revision of the 



cJ. Aedeagus : median lobe obliquely bent, produced at the tip ; 

 left lateral lobe moderately long, stout, concave, dilated towards 

 the base within, and sharply hooked at the tip; right lateral lobe 

 much shorter than the left, compressed, curved and somewhat 

 pointed at the tip. Plate VIII, fig. 39. 



The long series of this insect obtained by Hoge and 

 H. H. Smith in Mexico connects C. forreri with C. 

 svbiilipennis , Gorh., and show that they are forms of one 

 variable species, C. hieroglyphicus varying in colour very 

 much in the same way. The present species may be 

 known by its strongly subulate elytra, dull upper surface, 

 the rather prominent hind angles and strongly refiexed 

 margins of the prothorax, the non-prominent eyes in the 

 male, etc. The type is ochreous above, and pale flavous 

 beneath, with two small blackish spots on the head and 

 six others (arranged in two longitudinal series) on the disc 

 of the prothorax, and the antennae, tibiae and tarsi in- 

 fuscate. The legs vary in colour, but the femora are 

 always testaceous at the base. A male of each form has 

 been dissected, showing no variation in the structure of the 

 aedeagus. The femora in this sex are stouter than in the 

 female. The length (excluding head) varies from 9-13| 

 mm. 



37. Chauliognathus flavomarginatus, n. sp. (Plate III, 

 fig. 15, S-) 

 Opaque, finely pubescent ; head rufescent, flavous in front, with 

 an oblique, sinuous, interrupted stripe on each side between the 

 eyes, extending to the base and converging posteriorly, and the 

 under surface in part, black, the markings often obsolete above; 

 prothorax rufescent on the disc, yellow along the margins ; scutellum 

 black, yellow at the apex; elytra flavous, with a broad, oblique, 

 black stripe extending from the shoulder to very near the apex; 

 antennae, apices of the femora, tibiae, and tarsi infuscate, the rest 

 of the legs testaceous or rufo-testaceous ; under surface in great 

 part pale flavous, the metastemum nigro-fasciate behind, the last 

 ventral segment reddish. Head very large and elongate in (J, 

 smaller in $, the eyes not very prominent; antennae long, rather 

 slender, joint 3 a little shorter than 4. Prothorax about as long as 

 broad, slightly shorter in $, sinuate at the sides and distinctly 

 narrowed posteriorly, broadly rounded on each side in front, the 

 hind angles rather prominent, the surface uneven and with a deep 

 median sulcus. Elytra in cj a little broader than the anterior portion 

 of the prothorax, long, strongly subulate. 



