Horn. | 562 [April 19, 
Our species are as follows : 
Elytra finely costate. 
Mhorax swath an elevated line onveach sidehs......- 14a laticollis. 
Mhorax without elevated IMs raarercicteloleictiitserelsae aie etter variegata. 
Elytra uniform, not costate. 
Hivira variecatednwath: joaler cman kim Osher selina siclen iets parvula. 
Elytra unicolorous. 
Thorax finely granulate, margin finely serrulate. A sub-apical im- 
pressed! limteis cates ceeds oats as sysjaetens tone ee ststees Son Some fuliginosa. 
Thorax coarsely granulate, margin coarsely serrate. Without sub- 
ApicaleimpPrEsseclalime:s eretseycrccvuereus terest Mevertotorsvcts & sketer ena eranulata. 
S. laticollis Lec. New Species, 1863, p. 66; Proc. Acad. 1866, p. 
379. 
Oblong, sub-depressed, piceous, opaque, humeri and a spot near the apex 
of the elytra rufous, body beneath and legs ferruginous. Thorax wider 
than long, slightly narrowed at base, surface granulate and with an elevat- 
ed line on each side and a feeble impression at middle, margin obsoletely 
serrulate. Elytra with suture, three discal costee and margins sub-acutely 
elevated, intervals biseriately granulate. Length .08 inch; 2 mm. 
Occurs from New York to North Carolina, not common. 
S. variegata Lec. Proc. Acad. 1858, p. 63. 
Oblong elongate, moderately depressed, piceous, opaque, elytra ornate 
with pale markings. Thorax wider than long, margin very finely serru- 
late, narrower at apex than base, surface granulate. Elytra with suture, 
four discal costs and margin acutely elevated, intervals biseriately coarsely 
~ 
and deeply punctured. Length .08-.10 inch ; 2-2.5 mm. 
Occurs at Fort Yuma, Cal. 
These two species resemble each other in being costate 
but differ in every other particular. The thorax is narrowed 
to base in laticollis, wider at base variegata, elytra tricostate 
in the former and quadricostate in the latter, with intervals 
granulate in one and deeply punctured in the other. 
S. parvula Guerin, Icon. Regen. Ins. p. 189. 
Oblong, sub-depressed, piceous, opaque, elytra ornate with whitish 
spaces. Thorax wider than long, sides feebly arcuate, margin finely ser- 
rulate, base slightly wider than apex, surface granulate. Elytra with strize 
of moderate punctures, rather closely placed, intervals granulate. Length 
.08—.10 inch ; 2-2.5 mm. 
Occurs in the Middle States, rather rare. 
S. fuligimosa Mels. Proc. Acad. II, p. 111; nigripennis Lec. New 
Species, 1863, p. 67. 
Oblong, parallel, sub-depressed, opaque. Thorax wider than long, sides 
hey) ee 
scarcely arcuate, margin very finely serrulate, base and apex equal, disc 
