REVISION OF THE CICINDELA OF THE UNITED STATES. 31 
XXI. Abdomen glabrous in the middle. 
a. Head strongly striate, glabrous; elytral spots marginal. Sp. 56. ©. severa, 
8. Head finely striate, glabrous; elytra with white margin. Sp. 57, 58. ©. circumpicta, 
preetextata, { Ruppellii, boops, and biramosa. } 
y- Head pubescent; elytra with very broad white margin. Sp. 59. C. togata. 
XXII. Abdomen entirely pubescent. Sp. 60. C. gratiosa. 
XXIII. L.A cylindrical species with red legs and strongly punctured elytra, marked with a discoidal vitta. 
Sp. 61. C. lemniscata. 
M. Small species having the eyes very large, the thorax cylindrical and clongate, and the elytra narrowed in - 
front, without humeral angles; wings imperfect. 
fa. Elytra glabrous. C. dromicoides. } 
XXIV. . Hlytra sparsely pubescent. Sp. 62, 63. C. celeripes, cursitans. 
GROUP I. 
This group contains species of an elongate not convex form, and dull sericeous black or 
green colour. The labrum is moderately large, with five anterior teeth, in the males 
the exterior one of these teeth each side is reduced to a slight sinuosity so that the la- 
brum appears tridentate; the lateral angles are rounded. The palpi of the female are 
usually entirely black; the labial palpi of the male are pale, with the last joint black. 
The front is rather flat, glabrous, with only a few very fine stria each side. The tho- 
rax 1s trapezoidal, not very convex, with the transverse impressions well defined. The 
elytra are slightly convex, indistinctly punctured except at the base, where the punctures 
are large and scattered: the apex is not serrate, broadly and conjointly rounded in both 
sexes, sutural spine very small: the usual white spots are very small or entirely wanting; 
the pattern, when most complete, is a humeral spot, an obtusely bent medial band, and 
an apical lunule. The legs, under part of the thorax, pleurs, and sides of the abdomen 
are clothed not densely with white hair; a few hairs are also seen above on each side of 
the thorax. The three joints of the anterior tarsi of the male are equal in width, and 
moderately dilated. 
1. C. prasina, obscure nigro-prasina, sericea, thorace trapezoideo, latitudine sesqui breviore, planiusculo, lateribus 
parum rotundatis parce pilosis, angulis posticis rotundatis prominulis, subtus nigro-viridis, thoracis pleuris abdomi- 
nisque lateribus modice albo-pilosis; labro albo, breviusculo, antice haud rotundato, breviter tridentato. Long. -77. 
C. obsoleta ¢ var. Lec. Ann. Lye. Nat. Hist. 4,178. 
One male found by me on the Arkansas River below Bent’s Fort. Closely allied to 
the next, and not differing in sculpture; the form of the thorax is however so different, 
that it cannot be considered as a variety: the posterior angles are in the same manner 
rounded, and separated from the base by a slight margin, which caases them to appear 
prominent: the labrum is shorter, and the elytra, wider than in C. obsoleta. 
