10 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 76 



strigosely sculptured. Head confluently punctate, eyes large, rather 

 prominent, scape extending % way across middle; seventh funicular 

 segment very strongly transverse. Prothorax unusually short com- 

 pared to elytra (20 to 67) , pronotal tubercles strongly developed, nearly 

 as sharply isolated individually as in herricM. Elytra with base deeply 

 emarginate, somewhat depressed in region of scutellum, intervals 

 broad and flat, setae as long as those in herricJci, but thinner; abdomi- 

 nal scales very small, rounded, feebly to strongly plumose. Fifth 

 ventral (female) with a distinct trasverse impression. Tibiae more 

 dilated apically than in the three preceding species, the denticula- 

 tions along inner edge feeble. Metepisternal suture fine. 



Type.— A female (Cat. No. 41748, U.S.N. M.), labeled "Dept. Ent. 

 Tex. A. &M. C; A. C. 171. "^ 



Type locality. — Texas (probably Mabank). 



The plumose scales and fine, dense punctation of abdomen are 

 the distinguishing marks of this species. The elytral setae are 

 slender and some of them, at first sight, appear to be bristlelike, but 

 closer inspection shows that the tip of each is narrowly truncate. 



GROUP II 



Three species or subspecies comprise this group. The eyes are less 

 convex than in either Group I or III. The scape reaches about ^ 

 the way across eye. The predominant body scales are simple, although 

 well-developed plumose scales are present on certain areas of the 

 abdomen. The pronotal sculpture is fundamentally of a tuberculate 

 nature, though the tubercles are either so minute as to be properly 

 called granules or so flattened that the resemblance to tubercles 

 is lost. 



KEY TO GROUP II 



1. Pronotal sculpture consisting of irregular, flat-topped areas (evidently greatly- 



flattened tubercles); prothorax rather narrow (averages 24 broad to 20.5 



long) elongatus, new species. 



la. Pronotum with shining, punctate granules 2. 



2. Dimensions of prothorax as in eZongraius var. nevadianus, new variety. 



2a. Prothorax broader (22.5 broad to 18 long) var. incertus, new variety. 



MESAGROICUS ELONGATUS, new species 



Eight specimens. Length, 4.9-5.5 mm.; width, 2.01-2.3 mm. Elon- 

 gate, slightly broader behind. Color above either uniform cinereous 

 or cinereous and brown, the darker specimens with pale marks along 

 sides of prothorax and on humeri. Antennae and legs reddish. Ros- 

 tral groove broad and deep, usually extended back on to head, where 

 it is fine. Eyes feebly to moderately convex. First funicular seg- 

 ment distinctly (may be nearly twice) longer than second, third to 



3H. J. Reinhard, entomologist of the Agricultural and Mechanical College of Texas, has kindly sent 

 the following information regarding accession No. 171: "... the specimen (bearing this label) . . . 

 was received from Mr. R. H. Small, Mabank, Tex., on May 5, 1903. No other notes are available, but 

 it appears fairly certain that the specimen was collected in that locality." 



