104 GEO. H. HORN, 31. D. 



This species seems to resemble metaUlca Jacoby, as figured in Biol. 

 Cent.-Amer. vi, pt. 1, pi. xxxiii, fig. 10, but the color of the legs 

 will easily distinguish the two. 



Occurs in Arizona, special region unknown. 



S. flavicollis Lee (Phyllobrotica), Proc. Acad. 1859, p. 81; Lee. (Lnperus), 

 Proc. Acad. 1865, p. 209. — Form obloug, parallel, above blue or green, metallic, 

 thorax yellow, legs piceous. Antennje two-thirds the length of the body, pice- 

 ous, the three basal joints bicolored. Head raetallic-green, impunctate. Thorax 

 yellow, broader than long, slightly nari'ower iu front, sides feebly arcuate, disc 

 convex, smooth, impunctate. Elytra with feebly arcuate sides, disc sparsely 

 finely punctate, less distinctly at apex, surface metallic-green or blue, distinctly 

 alutaceous. Body beneath and legs piceous, with distinct greenish surface. 

 Length .26— .28 inch. ; 6.5—7 mm. 



Male. — Last ventral truncate at middle, a slight siiiuation each side, disc flat- 

 tened. 



Female. — Last ventral rather densely prolonged. 



Occurs at Fort Tejon and other places in southern California. 



S. tejoiiicus Crotch, Trans. Am. Ent. Soc. 1874, p. 79. — Oblong, parallel, 

 moderately convex, glabrous, shining; body beneath and legs, black; antennae 

 at base pale, head and elytra blue. Head smooth, carinate between the antennae. 

 Thorax quadrangular, slightly broader than long and somewhat narrowed in 

 front, sides slightly arcuate anteriorly, disc slightly convex, with impunctate 

 surface. Elytra coarsely sparsely punctate. Body beneath very sparsely pu- 

 bescent. Length .20 inch. ; 5 mm. 



3Iale. — Last ventral segment truncate and sinuate at apex, the disc slightly 

 concave; middle tibiae slightly, posterior strongly arcuate, and with a strong 

 tooth on the innei' edge near the knee. 



The female is unknown. 



The structure of the posterior tibite is rather remarkable, no such 

 structure having been noticed in any of the hitherto described species. 

 One specimen collected at Fort Tejon, Cal. 



S. loripes u. sp. — Oblong, parallel, beneath piceous, head and elytra me- 

 tallic-blue, thorax yellowish. Antennae piceous, the basal four joints pale on 

 the underside. Head alutaceous, impunctate. Thorax a little wider than long, 

 slightly narrowed in front, sides very feebly arcuate, disc very indistinctly alu- 

 taceous, with very minute, sparse punctures, larger along the base. Elytra dis- 

 tinctly alutaceous, punctuation not large nor close, smoother toward apex. Body 

 beneath very sparsely pubescent. Legs piceous, the anterior femora at knees, 

 their tibiae in great part, yellow. Length .20 inch. ; 5 mm. 



Male. — Last ventral transversely concave, the apex vaguely eraarginate ; pos- 

 terior tibiae stout, arcuate. 



This species might readily be mistaken for a smal\ fiavlcollu, which 

 it resembles in form and color, although more distinctly punctate. 

 As females of loripes are unknown, the only diflferential character 

 must be drawn from the hind tibise of the male. 

 Occurs in California, probably northern. 



