1S53.] 333 



sulcate. Antennae scarcely longer than the head and thorax, moderately thick- 

 ened, external joints rounded, a little longer than wide, slightly conical. Thorax 

 nearly as wide as the head, subquadrate, rounded on the sides anteriorly, disc not 

 convex, sparsely punctured, with a short inaj ressed line at the middle. Elytra 

 one half wider than the thorax, parallel, densely and tolerably finely scabrous. 

 Middle tibiae curved; posterior tibiae with the outer spur more slender than 

 usual, cylindrical, obliquely truncate at tip; inner one half as long, subacute. 



A c. 



7. L. tenebrosa, nigra fere opaca, capite punctato, gutta verticali rubra 

 notato thoraceque alutaceis, hoc subquadrato, antice angustato, parce punctato, 

 obsolete canaiiculato, elytris duplo latioribus subtiliter scabro-punctatis. 

 Long. -6 8. 



Canlharis tenehrosa Le Conte, Ann. Lye. 5, 160. 



San Diego, California, two specimens. Body dull black, more robust than 

 usual. Head opaque with fine rugosities, coarsely punctured, dilated behind the 

 eyes, and almost emarginate at base; vertex impressed, with a small red spot. 

 Antennae shorter than the head and thorax, stouter than usual, incrassated exter- 

 nally, with the outer joints subglobular. Thorax not narrower than the head, 

 finely rugous like it, but very sparsely punctured, subquadrate, rounded in front, 

 slightly narrowed behind, very obsoletely channeled. Elytra twice as wide as 

 the thorax at base, a little dilated behind, very finely, not densely scabrous with 

 punctures. Middle tibiae scarcely curved ; posterior tibiae with the outer spur 

 broad, concave, somewhat spatulate, and subobtuse at tip ; inner spur slender, as 

 long as the outer one ; trochanters unarmed. 



8. L. salic is, purpureo-cyanea, capite thoraceque parce pilosis, vage punc- 

 tatis, illopuncto verticali rubro, hoc quadrato transverso, elytris scabris, brevis- 

 sime pilosis. Long. '^^ 75. 



Great Salt Lake City, on willows ; collected by Capt. H. Stansbury ; (Lytta 

 salicisf HoJd.) Body above purplish blue, beneath steel blue. Head dilated 

 behind the eyes, truncate at base; surface coarsely punctured, pilose with erect 

 black hairs ; vertex channeled, with a small red dot. Antennae a little longer 

 than the head and thorax, incrassated externally, outer joints subglobular. 

 Thorax transverse, rounded on the sides anteriorly, slightly narrowed at base, 

 very sparsely punctured, with a few short black hairs ; disc flattened, channeled, 

 transversely impressed before the middle, basal margin reflexed. Elytra one 

 half wider than the thorax, parallel, scabrous, with a few distant very short 

 black hairs. Legs blackish; middle tibiae slightly curved; posterior tibiae with 

 the outer spur slender, concave and slightly obtuse; inner spur subacute, as 

 long as the outer one. Posterior trochanters of the male with a sharp spine 

 inferiorly. 



9. L. cyanipennia, cyanea, capite thoraceque viridi-aureis nitidis, parce 

 punctatis, illo gutta verticali rubra, hoc subpentagonali, canaiiculato, basi reilexo, 

 elytris scabris breviter parce nigro-pilosis. Long. -55. 



Cantliaris cyanijjeyiJiis Le Conte, Ann. Lye. 5,160. 



Oregon. Head shining, golden green, sparsely punctured, scarcely pilose, 

 slightly dilated behind the eyes, truncate, and almost emarginate at base ; 

 vertex slightly channelled, marked with a cupreous red dot. Antennae as long 

 as the head and thorax, moderately incrassated, outer joints subglobular. Thorax 

 golden green, subpentagonal, lateral angles rounded, sides anteriorly pilose, disc 

 sparsply punctured, flattened, channeled, foveate each side behind the middle; 

 basal margin strongly reflexed. Elytra metallic blue, more than one half wider 

 than the thorax, parallel, scabrous, with a few erect black hairs. Body beneath 

 blue, feet black; middle tibise curved ; posterior tibiae with the outer spur mode- 

 rately broad, concave, and subobtuse at the apex; inner spur slender, as long as 

 the outer one. The posterior trochanters of the male are armed with a sharp 

 spine near the base. The outer spur of the posterior tibia?, when seen laterally 

 in this species, appears as slender and sharp as the inner one, and accounts for 

 the erroneous position given this species in my memoir in the Annals of the Ly- 



