NORTH AMERICAN COLEOPTERA. 131 



under the name ovipennis Lee. The foHowing analytical table, sup- 

 plemented by the specific descriptions, will enable the student to 

 identify them : 



Larger species, 2.5 — 3.25 mm., claws closely approximate, connate beyond the 

 middle. 

 Prothorax much wider than loiin and without a smooth dorsal line. 

 Scales brown, conspicuously mottled with white, interstitial setae inconspicu- 

 ous ...sqiialidiiK. 



Scales blackish, intermixed with a few pale, scattered scales; interstitial 



setfe long, white and quite conspicuous !>i4>tiiIo<<iiiN. 



Prothorax not or very little wider than long. 



Prothorax larger, with an almost entire, smooth median line, scales uniform. 



grayish white, not mottled eiiieraMCOiis 



Prothorax smaller, smooth median line obsolete, scales brown, inconspicu- 

 ously mottled with paler scales llioi'io. 



Smaller species, 2.0 2.5 mm.; claws moderatelj' diverging, not connate beyond 

 the middle. 

 Prothorax wider than long, beak not impressed before the basal constriction. 

 Scales variable in size, brown, mottled with white; interstitial setse scarcely 



visible f4*N!6elatiis. 



Scales large, unicolorous, grayish white; interstitial setse quite (H)iispicu()us. 



ovi|»oiiiii«ii. 



Prothorax scarcely wider than long, beak broadly impressed before the basal 



constriction, prosternum broadly sulcate impre^isiroi^triN. 



S. sqiialidiis Casey. — Ovate, robust, convex, pitchy black, antennse and legs 

 rufopiceous, densely clothed with oval scales, small, grayish or ochreous on the 

 underside, brown and conspicuously mottled with larger white scales above. 

 Beak in the male rather robust, curved, punctured and scaly throughout, sub- 

 carinate and finely striate, in the female slender, much longer than head and 

 prothorax and regularly curved, shining and sparsely scaly ; ba.sal tufts feeble, 

 constriction superficial. Antennae slender, inserted two-fifths from the apex 

 ( % ), or at the middle ( 9 ), first and second joints of funicle elongate, the latter 

 a little longer than the former and much longer than the third joint, which is 

 short; following joints widened towards the club, which is not very densely 

 pubescent. Head punctured, front scaly, vertex shining. Prothorax distinctly 

 wider than long, two-thirds as wide at the apex than at the base, narrowed an- 

 teriorly and distinctly constricted at the apex, regularly and rather strongly 

 rounded on the sides; surface densely and coarsely punctured, punctures not 

 entirely concealed by the scales, a median vitta and two discal spots each side 

 white. Scutel very small. Elytra one-third wider at the base than the prothorax, 

 oval, one-fourth longer than wide, humeri prominent, rounded, strife not deeply 

 impressed, punctures remote and not very distinct; interstices flat, setse very 

 small, scarcely visible; humeral and a short basal line on the third interspace, 

 subquadrate or irregular spots on the disc;, white. Prosternum deeply emargin- 

 ate. transversely impressed, postocular lobes prominent. Legs slender, tibife 

 feebly incrassate toward the apex, anterior and middle setulose within, terminal 

 hooks distinct; claws connate beyond the middle. Length 3.0 mm. ; 0.12 inch. 

 Plate vii, fig. 8. 



TRANS. AM. ENT. SOC. XXI APRIL, 18H4 



