[November 1883 BULLETIN BROOKLYN ENTOM. SOC. VOL. VL : 77 
oN 
Habitat.—Sierra Nevada near Calaveras, Cal. June to August. 
Rare: ) 
Crotch, Trans. Am. Ent. Soc., v. p. 73. 
8. 0. Lecontei, Horn, (fig. 9.)—Easily known by the form of the 
_ elytra, having the greatest width in front of the middle, and behind this 
point becoming gradually narrower and less arcuate. Length 16 mm. 
tabitat.—Near Monterey, also Mariposa, Cal. June to July, 
Rare. 
: Horn, Trans. Am. Ent, Soc., iv, p. 143. 
g. 0. laevis, Horn, (fig. 10.)—Differs from all the others of the 
genus in being almost entirely smooth and sub—opaque; the elytra are re- 
ularly oval, exhibiting a few almost obsolete punctures irregularly placed 
like the foveze in Dejeanii. The whole surface is very finely, alutaceous, 
causing the sub-opaque appearance. Length 17 mm. Only in Dr. 
Horn’s and Leconte’s collections. 2 specimens, g' and Q. 
Habitat.—High Sierras near the head waters of King’s and Tule 
Rivers. June. 
Horn, Proc. Ac. Nat. Soc. 1866, p. 394. 
TETRACHA Hope. 
(Quadrifariam.) 
Large, metallic green species which are winged but do not fly. 
Head large, eyes circular, large ; labial palpi longer than maxillary, 
with the first joint elongated ; third joint of maxillary, longer than the 
fourth : mandibles with four teeth ; labrum without tooth ; thorax broad- 
er than long ; elytra subparallel, slightly convex, broader than the base 
of the thorax, deeply punctulate ; scutellum not visible; alarge triangu- 
lar impression at the middle of the thorax. 
o'.—Anterior tarsi dilated as in Omus; last ventral segment trian- 
gularly emarginate; tip of elytra subtruncate; sutural angle rectan- 
gular, 
©.—Last ventral segment broadly oval at tip; tip of each elytron 
rounded ; sutural angle obliterated. 
The larva, (fig. 133) also described by Dr. Horn, |. c, p. 34, is 
yellowish-white ; head and thorax corneous with metallic surface; the 
margin of the latter testaceous; the eyes as in Omus. Antennze with 
second joint longer than the first and equal to the two following together. 
Maxillary palpi with the second and third joints nearly equal, each 
slightly longer than the first. Length 17 mm, 
