306 MEMOIRS ON THE COLEOPTERA 



Anoplium. The palpi differ but little in size, the last joint of 

 the maxillary slender, somewhat enlarged and obliquely truncate 

 at tip, the mentum very short and transverse, the anterior coxae 

 globular, very approximate, being separated by a fine lamina, the 

 intermediate also narrowly separated by a long and very finely 

 acuminate process of the mesosternum, extending at the sides to 

 the mes-epimera, the met'Cpisterna as in Anoplium, the femora 

 slender, unarmed; tarsi small, very slender, loosely padded 

 beneath, except the basal joint of the posterior, which is a little 

 longer than the next two combined. Other characters may be 

 mentioned in the following description of the type: 



Geropa sequicollis n. sp. Moderately slender and small in size, dull, 

 the elytra rather shining, pale red-brown in color throughout, the under 

 surface, legs and antennae still paler; head and prothorax throughout 

 with rather small, equal, shallow and polygonally crowded punctures; 

 hairs sparse and decumbent and with others still sparser and erect; eyes 

 separated by a little less than their width; antenna? ( 9 ) extending nearly 

 or quite to the elytral tips, very slender, not compressed, filiform, gradu- 

 ally very slightly thicker basally, the third joint one-half longer than the 

 first or fourth; outer joints gradually shorter and thinner, the eleventh 

 simple; prothorax very symmetrical, convex, distinctly wider than the 

 head, as long as wide, the sides very evenly and rather strongly arcuate 

 from the extreme basal margin to the apex, which is truncate and equal 

 to the truncate base, both extremely finely margined; surface with a very 

 fine and incomplete median impunctate line; scutellum small, rounded, 

 minutely and closely punctate and moderately pubescent; elytra three 

 times as long as wide, barely visibly wider than the middle of the pro- 

 thorax, parallel, slightly dehiscent at apex, the apices narrowly and very 

 evenly rounded, without trace of sutural angle; surface even, with mod- 

 erately small and well separated punctures, becoming very fine distally 

 and with a widely spaced series of slightly larger punctures basally at 

 outer third; prosternum long as in Hyper mallus; abdomen very finely, 

 sparsely punctate and sparsely pubescent, the fifth segment evenly 

 rounded, the first and second subequal. Length (9 ) 8.8 mm.; width 1.9 

 mm. Texas (Brownsville), Wickham. 



There are a few long flying hairs on the elytra, confined principally 

 to the lateral parts basally. This genus may take its place just 

 before Tylonotus for the present. 



Heterachthes Newm. 



This genus is well distinguished from Compsa, with which it is 

 united by Lacordaire, by having no trace of the fine dorsal carina 

 of the subbasal antennal joints; the species allied to ebenns Newm., 



