REVISION OF THE CICINDEL& OF THE UNITED STATES. 29 
sions. Abnormal variations occur by the elytra becoming narrowed anteriorly, without 
humeral angles, (group xxiv.;) by the thorax being narrow and cylindrical, with only 
faint impressions (group XXIV.;) by the eyes being excessively large, (groups XI., XII, 
XII., XIX., XXI., XXII., XXIV.;) and by the elytra being subcylindrical, instead of mode- 
rately convex and oval, (groups XI, XXI., XXII., XXIII.) 
A. Abnormal cylindrical Cicindele, with sericeous surface, and with the labrum variegated or black, frequently 
5-toothed, with prominent exterior angles; the elytra are marked with narrow vitte, and small sutural dots, or 
else with normal spots, the apical portion of the apical lunule being always wanting. The head is large, with 
moderate, but occasionally prominent eyes. The palpi are pale with dark tips. The legs and abdomen are always 
of the colour of the body, which is not very pubescent. The tarsi are glabrous above, and the anterior of the 
male are moderately dilated. (All foreign.) 
a. Hlytra with vittiform markings, and subsutural dots. C. lugubris, fatidica, &c. 
b. Hlytra with marginal spots, and frequently with slightly bent medial band. C. chinensis, &c. 
B. Normal, frequently flattened, Cicindele, with the labrum frequently large; sub-5-dentate in some species, 
(of the first group,) with the outer angles not prominent; usually white, rarely black, usually tridentate, but some- 
times only unidentate. Front broad, eyes moderate, sometimes prominent. lytra usually sericeous, rarely po- 
lished, sometimes punctured; apical spot usually wanting; tips never serrate; sutural spine completely wanting. 
Thorax flattened, almost. margined, narrowed behind. Under surface normal in colour; legs never very long. 
Tarsi of male more broadly dilated than usual. 
I. Surface sericeous, elytra only punctured towards the base, (spots usually wanting.) Sp. 1-3. C. prasina, 
obsoleta, vulturina. 
II. Front flat, labrum tridentate. Elytra foveate and punctured. Sp. 4. C. unipunctata. 
IL. Front excavated, labrum unidentate. Hlytra foveate and punctured. Sp. 5. C. longilabris.- 
IV. Labrum very short, tridentate; elytra with shallow punctures and subsutural foves; thorax hardly ru- 
gous. Sp. 6-10. C. pulchra, Lecontei, rugifrons, scutellaris, nigrocerulea. 
(Here comes in a group of elongate species of normal form, but with very large head, small eyes, and long, 
trapezoidal, somewhat flattened thorax: e.g., C. luctuosa De/.) 
C. Normal, usually convex Cicindelie, with the labrum white, tridentate or unidentate, with the outer angles 
not prominent, and only moderate in size. Front broad, eyes prominent, but moderate in size. Hlytra punctured, 
sometimes granulate, rarely polished; sutural spine distinct; tips alike in both sexes, usually serrate, but some- 
times smooth; elytra with normal markings, the apical portion of the posterior lunule never wanting, unless the 
whole lunule is wanting. Under surface and legs normal in colour, the latter never very long. Tarsi of males 
rather broadly dilated. Thorax trapezoidal or quadrate, never cylindrical; posterior angles usually a little elevated. 
V. Thorax convex, rugous; front glabrous; elytra finely serrulate, punctured. Body only slightly hairy be- 
neath. Palpi of both sexes black. 
a. Labrum tridentate. Sp. 11, 12. C. sexguttata, patruela. 
8. Labrum unidentate. C. tricolor. ? 
VI. Thorax short, flat, trapezoidal, rugous; front hairy; elytra with elevated punctures, not serrate; humeral 
lunule interrupted; palpi of both sexes black. 
ty. Hlytra equably punctured. C. campestris, desertorum, &c. } 
5. Elytra less punctured towards the margin. Sp. 13, 14. C. splendida, purpurea. 
