Coleopterological Notices, V. 337 



segment large and greatly exposed, the ventral plate folded over 

 dorsally for an unusually great distance ; seventh with rather com- 

 plex lateral lobes. Coxae moderate in size, the intermediate large, 

 approximate but not contiguous, the mesosternal process short and 

 broadly triangular, advancing for one-half their length, the point 

 free, extremely fine and attenuate. Metasternum ample, not pro- 

 duced at all between the coxae, there being simply a very feeble 

 arcuation opposite the coxal opening, the space thence to the meso- 

 sternum transversely convex. Legs short; tibiae rather slender; 

 tarsi 4-5-5-jointed, the posterior distinctly shorter than the tibiae, 

 with the first joint moderately elongate, the first four decreasing 

 distinctly and uniformly in length ; ungues small, arcuate and 

 simple. 



The general structure of this genus allies it intimately with 

 Amischa Thoms., from w^hich it differs in the more elongate 

 abdominal segments, much more developed sixth segment, and, 

 especially, in the structure of the metasternum between the middle 

 coxae, which in Amischa is produced and acute. It is confined 

 apparently to the arid mountain regions of the west. The three 

 species described below may be thus distinguished among them- 

 selves : — 



Elytral suture not in the least longer than the pronotum. 



Head at base but slightly narrower than the pronotum praBlonga 



Head scarcely two-thirds as wide as the pronotum parviceps 



Elytral suture slightly longer than the pronotum angusta. 



In reality only the first of these species can be regarded as the 

 type of Colposura, parviceps and angusta having the metasternum 

 finely produced between the coxae ; these therefore are much closer 

 still to Amischa. I have attached them provisionally to Colpo- 

 sura, however, because of their general resemblance to prselonga, 

 and because they differ from Amischa in their absolutely contigu- 

 ous middle coxae and more elongate ventral segments. 



C praelonga n. sp. — Narrow, parallel, pale ochreous-yellow throughout, 

 the head piceous ; first five tergites blackish except at apex ; anterior parts 

 finely reticulate, moderately shining, finely, feebly, rather closely but almost 

 imperceptibly punctate, the abdomen more shining, coarsely but feebly, sub- 

 imbricately sculptured ; pubescence throughout fine short and decumbent. 

 Head triangular, not quite as long as wide, the neck scarcely two-fifths as wide 

 as the subbasal width, the latter but slightly, though distinctly, less than the 

 prothorax ; base subtruncate ; basal angles rather narrowly rounded ; sides 



