AMERICAN COLEOl'TJCKA. 4(.) 



sides, broadly and distinctly consti-ict(>d at the a])ex, lateral tiihercles small, sub- 

 acute : dorsal channel entire or nearly so, le,«s distinct anteriorly, surface coarsely 

 punctured, less so in front. Elytra oval, less than one-third wider at the base 

 than the prothorax, broadly rounded on the sides, strire rather wide, well im- 

 pressed, punctures small and rather distant, intersjiaceS convex, rugose, each witli 

 a row of small tubercles or granules, behind the distinct scutellar spot is a dark 

 velvety line; pygidium densely punctured, coarsely pubescent: femora subcla- 

 vate, tibise slightly curved, especially the anterior pair, faisi slender, third joint 

 broadly bilobed, fourth as long as the two pi'eceding joints, claws with a long 

 basal tooth. Length 2.5-2.75 mm. ; 0.10 0.11 inch. 



% . ■ Last ventral with a small glabrous space at the apex ; middle and poste- 

 rior tibite unguiculate at the apex. 



Hub. — Eastern, Western and Southern States. 



Our most common si)ecies. The Eastern specimens are generally 

 smaller and loss conspicuously mottled than the Western. 



R. loniu^lillis Lee. — Oblong, ellii)tic, black, antennse and tarsi paler, above 

 thinly cldtlicd with a very short, fine pubescence, interspersed with isolated, 

 elongate white scales; scales on the underside white, not dense, except on the 

 mesosteruum and between the anterior coxie. Beak very stout, shorter than the 

 head, widened at the apex, coarsely jjunctured and scaly near the base; antennse 

 rather stout, inserted just before the middle, scape testaceous, funicle and clava 

 darker, first joint of funicle robust, second not elongate, shorter than the first 

 and a little longer than the third, club oval. Eyes round, feebly convex and en- 

 croaching upon the front, without supra-orbital ridges, sejjarated above about one- 

 half the width of the rostrum. Head convex, densely punctured; prothorax 

 about as long as wide, scarcely one-fourth wider at the base than at the a])ex, 

 broadly rounded on tlie sides and feebly constricted at the apex, lateral tubercles 

 absent, dorsal channel extending to about the middle, surface densely punctured, 

 esjiecially on the sides, thf latter densely clothed with large, cream-colored scales 

 and enclosing an oval, glabrous space, doi-sal channel squaniose. Elytra elongate, 

 cue-third wider at the base than the prothorax, humeri rounded, sides nearly 

 straight for one-half their length, then gradually rounded to the apex, striae deep, 

 distinctly punctured, punctures not closely approximate, iutersj)aces coarsely ru- 

 gose, scutellar spot very conspicuous, another less distinct sutural sjiot on the 

 declivity and some lines of white scales ; pygidium densely and finely punctured ; 

 prosternuni broadlyand less deeply emarginate. Legs slender, femora not davate, 

 tibiae scarcely wider at the apex, tarsi slender, third joint bioadly bilobed, fourth 

 sherter than the two preceding joints, claws with a long tooth. Length 2.5-3.0 

 nun.; 0.10 0.12 inch. 



% . .Last ventral slightly glabrous at the apex, middle tibite unguiculate at the 

 apex. 



Hab. — Pennsylvania (Allegheny County, Dr. Hamilton), South- 

 ern and Western States. 



Easily recognized by its elongate form ; structurally and in ap- 

 pearance it agrees with the European R. perpendicularii Reich., but 

 is much larger. Two specimens in Mr. Ulke's coll. are ferruginous, 

 due no doubt to immaturity. 



TKANS. AM. KNT. SOC. XXIII. (60) DECKMBER. 1896. 



