^’Description of nem Mtrtk 
INSECTS, and observations on some 
already described. 
By Thomas Say, 
AMBLYCHEILA, Say. 
Labrum transverse, >much wider 
than long ; mandibles prominent, 
strongly toothed : labial palpi elonga- 
ted; basal joint short, entirely con- 
cealed by the mentum ; second joint 
short, spherical, resting on the edge 
©f the emargination of the mentum ; 
the third joint elongated, cylindric, 
with rigid hairs ; fourth joint enlarg- 
ing to the extremity where it is trun- 
cate somewhat sinuate : mentum, 
tooth robust, prominent, canaliculate 
before, acute ; antenna, second joint 
two-thirds the length of the thfrd i 
wings none ; elytra united : eyes very 
small, hemispherical, entire: clype- 
us at tip entire. 
■ A. cylindriformis, Say. (Mantico- 
^,!ra) Journ. Acad. Nat. Sc. 
This insect which I found near the 
Rocky Mountains,! described sunder 
the genus Manticora, but judging bjr 
the present mutilatfed state of the spe- 
cimen it seems to agree better withthe 
Megacephala.. It differs from Manth 
cora altogether in form, in the small^ 
er size of the head, and in not having- 
alobed, thorax, &c., hut it cprres- 
ponds in the comparative magnitude 
of the eyes, the diameter of \yhich is 
hardly more considerable than that of 
the basal joint of the antenna. In the 
size of the eyes it differs greatly from 
Megacephala,also in the circumstance 
that the basal joint of its labial pal- 
pi is altogether ,; Goncd^led by the 
mentum :hut it*agrees with tiiis genus 
in form, and is probably more close- 
A ly related to it than to Manticora. 
AmericariA^i^l however 
as it does not agreei^th> 
any known group it may perhaps be 
properto construct a genus for its re- 
ception. 
CICINDELA, Linn. 
C. nnicQlor, /Dej. This species 
appears to have an extensive ran^e. 
I receivM aspecimen from Dr. Pick- 
ering of Massachusetts, and I found 
another in. Florida, it varies in hav- 
ing a slight touch of white' on the tip 
of the elytra. 
‘ C. marginata, Fabr. Syst. Eleut. 1, 
241, No. 48. Dejean has described 
this species under the name of varia- 
gatai Sp. Gen. 1, 84 — see also Vol. 2, 
414. 
C. 'f funipunctata. Fabr. varies In 
having? a very small obscure yellow- 
ish spot; half way between the ordina- 
ry spot and the tip, on the margin. 
C. Vnlgarwt Say, Trans. Amer. 
Philos. Soc. 1818. Since described 
by . Dejean under the name of obliqua-^ 
^a, Sp. Gen. 1, 72, but corrected Vol. 
2,Supp;‘414. 
C. » hirticolUs^'^SiY , Trans, Amer, 
Philos. Soc. f 18 18o' Since described 
by dejean with the name of repanda, 
Sp, Gea. 1, 74^ butcorrectdd Vol. % 
4i4. 
dorsalis* Say, Trans, Amer. 
Philos. Soc. 1818. Since described by 
|)ejean with the name of signata, Sp. 
(^en. 1, 124, but corrected Vol, 2,414, 
Supp. and pn page 42)$ of the |$ame 
S|Upplement he^pscribes another sper 
dies under the same oi dorsalis, which 
however wiUdPf course be changed, 
a|smine has the priority*^ 
.Q^.purpureai O\\YAiis,ZZ, pi. 3,/, 
34. Say, Trans. Amer. Philos. Soc. 
18 18, p. 419. e C . marginalis, -Eahr. 
