184 Coleopterological Notices. 



with a thin membranous border, broadly emarginate at apex ; sides feebly 

 convergent from base to apex, distinctly and evenly arcuate; basal angles 

 broadly rounded, apical much more narrowly so ; disk with a few widely and 

 irregularly scattered punctures in the middle, which are coarse and excessively 

 feebly impressed ; near the sides the punctures are much more dense, stronger 

 and distinctly scabrous or subasperate. Elytra connate, very convex,; sides 

 parallel and distinctly arcuate for three-fourths the length from the base ; 

 together broadly rounded behind when viewed vertically, acute with the sides 

 Straight when viewed longitudinally ; disk excessively minutely subgranu- 

 lose, finely rugulose, with fine, not dense, scabrous or subasperate punctures. 

 Under surface moderately shining, finely, not densely and subasperately 

 punctate. Epipleurje nearly flat, finely subrugulose and asperate. Length 

 2.9-4.0 mm. 



Lower California. 



The species above described is the smallest member of the group. 

 Several specimens were secured by Mr. Gr. W. Dunn, who informs 

 me that its habits are entirely similar to those of Coelus. 



ULOPORUS n. gen. (Tenebrionidfe). 



Head short, broad, subdeflexed. Clypeus broadly rounded, not obliquely 

 elevated at the sides. Eyes convex, moderate, coarsely faceted, extending 

 slightly further beneath than above, neither divided nor emarginate. Antennae 

 inserted under the acute lateral edges of the clypeus, almost adjoining the 

 eye, moderate in length, very slender, the last three joints abruptly larger 

 forming a distinct oblong club ; first and second joints elongate-oval, slightly 

 more robust, the first slightly the longer and wider ; third very slender, three 

 times as long as wide, rather distinctly longer than the fourth ; eighth 

 obconical, fully as long as wide; ninth abruptly much wider, subtriangular, 

 wider than long ; tenth obtrapezoidal, twice as wide as long ; eleventh as wide 

 as the tenth, oval, slightly wider than long. Labrum very short, strongly 

 transverse, truncate, the membranous band separating it from the clypeus 

 fully as long as its exposed portion. Maxillae large, greatly exposed and 

 prominent ; palpi well developed ; second joint long and slightly clavate ; 

 third short ; fourth very large, strongly securiform. Ligula short, indistinct ; 

 palpi rather small, not very robust ; third joint ratlier longer than the second, 

 feebly conical, twice as long as wide. Mentum small, slightly elongate, dis- 

 tinctly narrowed from apex to base and supported on a moderate peduncle. 

 Prothorax short, wider from apex to base, the sides coarctate with those of 

 the elytra, the sides of the pronotum margined with an elevated bead, the 

 apex and base not margined, the latter fitted closely to the elytra. I'rosternum 

 short in front of the coxje, rather widely separating tlie latter, the process 

 very largely developed beliind the coxc-e, the apex angulate and received in a 

 deep impression of tiie mesosternum ; development behind the coxa! — near 

 their inner margins— as great as before them in the same longitudinal line. 



