1853.) ) 333 
sulcate. Antenne 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 impressed line at the middle. Elytra 
one half wider than the thorax, parallel, densely and tolerably finely scabrous. 
Middle tibie curved; posterior tibia with the outer spur more slender than 
usual, cylindrical, obliquely truncate at tip; inner one half as long, subacute. 
INO 
7. L. tenebrosa, nigra fere opaca, capite punctato, gutta verticali rubra 
notato thoraceque alutaceis, hoc subquadrato, antice angustato, parce punctato, 
obsolete canajiculato, elytris duplo latioribus subtiliter seabro-punctatis. 
Long. -6—:8. 
Cantharis tenebrosa Le Conte, Ann. Lyc. 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. 
Antenne 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 tibie scarcely curved; posterior tibia 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. salicis, purpureo-cyanea, capite thoraceque parce pilosis, vage punc- 
tatis, illo puncto verticali rubro, hoc quadrato transverso, elytris scabris, brevis- 
sime pilosis. Long. :65—:75. 
Great Salt Lake City, on willows; collected by Capt. H. Stansbury ; (Lytta 
salicist Hald.) 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. Antenne 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 tibia slightly curved; posterior tibiz with 
the outer spur slender, concave and slightly obtuse; inuer spur subacute, as 
long as the outer one. Posterior trochanters of the male with a sharp spine 
inferiorly. 
9. L. cyanipennis, cyanea, capite thoraceque viridi-aureis nitidis, parce 
punctatis, illo gutta verticali rubra, hoc subpentagonali, canaliculato, basi reflexo, 
elytris scabris breviter parce nigro-pilosis. Long. -55. 
Cantharis cyantpennis Le Conte, Ann. Lyc. 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. Antenne as long 
as the head and thorax, moderately incrassated, outer joints subglobular. Thorax 
golden green, subpentagonal, lateral angles rounded, sides anteriorly pilose, dise 
sparsely 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 tibiw curved ; posterior tibize 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 basee 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- 
