146 WILLIAM G. DIETZ, M.D. 



tecoxal ridges well marked, rather approximate; postocular lobes feeble. Legs 

 slender, thighs feebly clavate, deeply eniargiiiate within near the apex, almost 

 angiilate ; tibije slender, nearly parallel, slightly widened at apex, terminal hooks 

 small; tarsi slender, third joint not broadly bilobed, fourth projecting a little 

 moi'e than the length of the third; claws very small, connate fully one-half 

 their length. Length 2.5-3.0 mm. ; 0.10—0.12 inch. Plate vii, fig. 14. 



Hub. — Arizona. Coll. of Dr. Horn, Mr. Ulke and my own. 



Six specimens are before me. Very distinct ; greatly resembles 

 perplexius of the preceding group, but readily distinguished by its 

 smaller size and antecoxal ridges. Is this depricans Casey ? The 

 author of that species gives California as its habitat, whereas all the 

 specimens before me are from Arizona. The specimen in Mr. Dike's 

 collection differs from the typical form in having the scales on the 

 lateral fulvous vitta white, thus corresponding in most details with 

 the description of depricans. Since the above was written a typical 

 specimen sent to Capt. Casey for determination was returned as 

 seriatus Lee, from which it is abundantly distinguished by its larger 

 size, its differently colored scaly vestiture and the scarcely visible 

 elytral sette. 



S. cinereilS Motsch. Elongate oblong, dark ])iceous, legs brownish, densely 

 clothed above by closely adherent, dark piceous, oval scales sparsely mottled 

 with white, scales on the underside brownish, intermixed with whitish setse, 

 those of the thoracic side pieces grayish white. Beak in the male robust, 

 moderately curved, densely punctured, striate, scaly from base to the insertion 

 of the antennae in the female, a trifle more slender and shining in apical half; 

 basal tufts distinct, constriction not very deep; scrobes scarcely oblique; au- 

 tennse inserted two-fifths from the apex ( 'J, ), or a little before the middle ( 9 ), 

 moderately robust, first joint of funicle elongate, .stout, longer than the next 

 two joints, second scarcely longer than the third. Head as in the preceding. 

 Prothorax distinctly wider than long, about three-fourths as wide at apex than 

 at base, strongly rounded on the sides in front, apex broadly and distinctly con- 

 stiicted, basal half of sides nearly straight and slightly convergent to the base: 

 surface not very closely and rather coarsely punctured; scales intermixed with 

 rather long whitish hairs, a spot in front of scutel and several scattered ones of 

 white scales. Scutel distinct, scaly. Elytra one-third wider at base than the 

 prothorax, slightly wideiied to behind the middle, sides straight to about the 

 middle, then rounded to the apex ; humeri prominent, strife quite marked, dis- 

 tinctly and remotely punctured, interstitial setse pale, very small, white scales 

 in irregularly scattered spots; antecoxal ridges distinct; postocular lobes promi- 

 nent, legs moderately stout ; femora clavate, tibiae parallel, terminal hooks rather 

 small, tarsi slender, third joint bilobed, fourth projecting fully the length of 

 the third ; claws as in the preceding. Length 2.75 — 3.00 mm. ; 0.11 — 0.12 inch. 



Hab. — California, Vancouver Island (LeConte). 

 The above description was taken from specimens in Dr. Horn's 

 collection bearing a label with the specific name in Dr. LeConte's 



