410 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 45. 



Table of species of MitostyliLS. 



1. Body not clad with long fine hairs. 



a}. First funicular joint as long as, or longer than, the second and third together. 



¥. Vestiture green, setae very short, but erect (Texas) tenuis Horn. 



6^. Vestiture grayish with two more or less interrupted prominent brown fascite, 



setfe inconspicuous, decumbent (Lower California) gracilis Horn. 



a^. First funicular joint not as long as the second and third combined; vestiture 

 grayish, with two more or less interrupted brown fasciae, setae visible, subre- 

 cumbent (Yucatan) fragilis Sharp. 



2. Body clad with long fine hairs. 



«^ Scutellum squamose, on level with elytra; tibise squamose and hispid (Texas, 

 Mexico) setosus Sharp. 



a^. Scutellum a broad shining tubercle; tibiae with depressed setae, but without 

 erect hairs (Guatemala) scutellaris Sharp. 



Mr. daampion's species glaucus belongs near setosus, but is sepa- 

 rated by the shorter and more abundant erect setosity on the elytra, 

 the scales uniformly glaucous, and the prothorax as finely punctured 

 as in scutellaris. 



A full description of setosus is presented below, as this had been 

 drawn up as a description of a new species. 



MITOSTYLUS SETOSUS Sharp. 



Form slender, body black, surface densely covered with broad 

 truncate white scales and small patches of ochreous scales, and 

 bristling with slender hairs. Length, 4.5-5.5 mm. 



Beak short, narrowed toward apex, triangularly emarginate at 

 apex with an apical concave depressed smooth triangular area 

 bounded by a raised rim; surface very roughly punctured, irregularly 

 squamose, bristling with long hairs; scrobes visible from above, broad 

 at apex, arcuate, upper line directed toward eyes, then suddenly 

 flexed toward angle between head and beak beneath, lower line more 

 moderately curved, making scrobes widest at angle and narrowest in 

 downward projection. Antennae elongate and very slender; scape 

 slender, clavate, reaching thorax; funicle elongate, first and second 

 jomts long, clavate, the first a little longer than the two following; 

 joints 3-7 shorter, diminishing toward club; club very elongate, 

 slender, about as long as the last three funicular joints. Thorax a 

 little wider than long; base and apex equal, truncate; sides mod- 

 erately convex; surface very coarsely pitted, with median carina; 

 scaly vestiture white with a median ochreous vitta. Elytra not 

 wider at base than thorax, without humeri, elongate-oval; striae 

 formed by closety approximate quadrate punctures; intervals each 

 with a single row of erect black bristles; scales moderately close but 

 not overlapping, white, except with small ochreous spots before the 

 middle and a larger transversev itta behind the middle. Femora 

 scaly and bristly; tibiae straight and clothed as femora, tarsi slender, 



