1853.] 348 
Missouri Territory, Creek Boundary and Texas. Say has given no character 
for separating his two species, but suggests that they may be varieties. If he had 
possessed the next species, he would immediately have observed the difference in 
the form of the thorax. Jn the female the antenne are but little longer than the 
head and thorax, very slender and setaceous, the first joint reaching to the pos- 
terior margin of the eyes. In the male the same organs are half as long as the 
body and much stouter, though setaceous ; their first joint reaches beyond the 
eye. 
47. L. longicollis, nigra punctulata, dense cinereo, vel luteo-griseo pu- 
bescens, thorace subcampanulato, postice canaliculato, latitudine sesqui longiore, 
elytris macula humerali parva denudata, genubus tarsis antennisque nigris, his 
articulo 2ndo 3io subbreviore. Long. -9. 
Missouri Territory and Santa Fe. This species is a little more slender than 
the last, which it closely resembles; the elongate form of the thorax and the 
small denuded humeral spot at once distinguish it. The antennz in the female 
are one third the length of the body and setaceous, the first joint reaching a little 
behind the eyes which are much narrower than in the preceding. In the male 
the antennz are more than half the length of the body and stouter than in the 
female ; the first joint extends beyond the base of the head. 
48. L. tenuis, valde elongata, nigra, dense cinereo-pubescens, therace sub- 
campanulato, canaliculato, latitudine fere sesqui longiore, tarsis antennisque ni- 
gris, his articulo 2ndo sequentibus tribus equali, palpis pallidis. Long. °62. 
One male; Georgia. ‘This species is easily distinguished from the next by the 
pale palpi and the very long second joint of the antenne; these organs are two 
thirds the length of the body; the first joint extends to the base of the head. 
This would be C. unicolor Kirby, were it not for the pale palpi. 
49. L. Fabricii, valde elongata, nigra, dense cinereo-pubescens, thorace 
subcampanulato, canaliculato, latitudine longiore, tarsis palpis antennisque nigris, 
his articulo 2ndo 3i0 longiore. Long. :45—.55. 
? Lytta cinerea || Faby. Ent. Syst. Suppl. 119; Syst. El. 2, 80. 
Cantharis cinerea Harris, Ins. Injurious to Vegetation, 122: Bost. Journ. Nat. 
Hist. 1, 497. 
Atlantic States and Missouri Territory ; abundaut. The antennz in both sexes 
are half the length of the body; in the female the first joint reaches behind the 
eye, and the second joint is one half longer than the third, in the male they are 
thicker, the first joint reaching to the base of the head, and the second joint is 
twice as long as the third. Fabricius? description is worthless, and his name 
pre-occupied by Forster. C’. serveea Olivier, quoted by Fabricius as synonymous, 
is described as having the antennz short, and as being found in Barbary. 
One small male (-3 unc. long) from “Missouri Territory, differs in having 
shorter and stouter antenne, the intermediate joints being scarcely one half 
longer than wide, the first only reaches half the distance between the eye and 
the back of the head; a female from the same locality also differs from the type 
in having less slender antenne ; these may probably belong toa different species, 
but as these characters seems light, I forbear naming it for the present. 
50. L. torsa, valde elongata, sat dense tenuiter cinereo pubescens, thorace 
subcampanulato latitudine non longiore, canaliculato, tarsis palpis antennisque 
nigris, his articulo 2ndo longiore, sequentibus subobconicis. Long. °45. 
One male from Texas; Lieut. Haldeman. In specific characters this comes 
very near to the next species, but the pubescence is more abundant, and the 
punctuation of the elytra much finer. The sexual characters are very remark- 
able; the first joint of the antenne is as long as the head, thickened, and sud- 
denly bent at an obtuse angle about the middle, and then slightly curved out- 
ward towards the tip ; the second joint is nearly as long as the three following, 
which are triangular; the following joints are gradually narrower to the ex- 
tremity. 
ahah the differences noted under the other allied species, it is probable that 
many closely related species are found in different parts of the country, the spe 
