274 GEO. H. HORN, M. D. 



(jO. JL, Tettlla u. sp. — Oblong oval, broader behind, color variable from ferru- 

 jfinous to dark brown, surface more or less pruinose, distinctly so in the darker 

 specimens, sparsely clothed with very short recumbent hair, the elytra with very 

 long erect hair near the base and along the suture. Clypeus very feebly eniar- 

 ginate, the margin reflexed, surface shining with coarse deep punctures not 

 closely placed, frontal suture deeply impressed, front shining, coarsely and deeply 

 punctured, somewhat rugose, with moderately long erect hairs. Thorax very 

 obtusely angulate, the margin coarsely serrate, tire punctures of the disc moder- 

 ate in size, sparsely placed, a little coarser near the sides, each puncture having 

 a moderately long erect hair, the lateral margin with long hair. Elytra with 

 moderately coarse jiunctures, very regularly and moderately closely placed, each 

 puncture with a short semi-erect hair, with very long erect hairs arising from 

 si)ecial punctures on each side of the scutcUum and along the sutural costa, also 

 along the first discal costa 9> lateral margin ciliate with shorter hairs. Py- 

 gidium convex, coarsely punctured with short erect hairs and longer hairs nearer 

 the apex, more abundant in the female. Metasteruum densely but indistinctly 

 punctured, with moderately long erect yellow hair. Abdomen very sparsely 

 punctate with short erect hairs. Last joint of maxillary palpi fusiform, obtuse, 

 a moderately deep impression on the outer side. Length .50 — .75 inch ; 13 — 19 

 mm. 



Male. — Antennal club small, shorter than the funiculus. Spurs 

 of hind tibise slender and long. Claws feebly curved, the tooth rela- 

 tively small and within the middle. Abdomen vaguely impressed 

 at middle. Last ventral segment transversely impressed, the ante- 

 rior border of the segment with two very obtuse teeth Tfig. 18^) 

 directed backward. Penultimate segment obtusely elevated at mid- 

 dle, obliquely flattened and subgranulate ; erect hairs of elytra 

 shorter and forming one series along the sutural costa. 



Female. — Antennal club as in the male. Claws more curved, 

 the tooth larger and median. Spurs of hind tibiie broader than in 

 male ; erect hairs of elytra mucli longer than in the male and form- 

 ing an additional line in the usual position of the first discal costa. 



Variations. — The color varies greatly from a pale ferruginous to 

 a dark purple brown, as in micans. The elytral costie are usually 

 entii'ely obliterated, although some few show faint traces of them. 

 As a rule the males are paler than the females. In some specimens 

 the glaucous coating is so conspicuous on the thorax as to cause it to 

 appear white in certain lights. 



This species appears closely allied to a Mexican form which bears 

 the mss. name longipilosa Reiche, of which I have seen only a fe- 

 male. In the latter the margin of the thorax is less crenate and the 

 last joint of the maxillary palpi acutely ovate. Burmeister describes 

 several closely allied, especially setifera, which is described as densely 

 pubescent and the thoracic margin not crenate. 



Occurs in Arizona (Morrison), New Mexico (Prof. Snow). 



