1852.] 129 
B. With ten rows of abdominal scales. 
CNnEMIDOPHORUS PRAESIGNIS, B. and G.—Ten longitudinal rows of abdominal 
scales, quadrangular, broader than long. Two subguttural folds, the surface of 
the posterior one covered with scales of medium size. A transverse band of 
similar scales extends from one ear opening to the other. Nostrils between the 
suture of two plates. Scales on the upper part of the body proportionally small; 
on the tail, elongated, narrow and keeled. The middle region of the back is 
greenish brown, exhibiting an indistinct medial streak with irregular quadrangles 
of the same color on each side, separated by a narrow band of deep black. The 
sides are black, provided with two narrow stripes of yellowish white on each and 
extending along the tail. Between these stripes, and specially along the abdomen, 
irregular dots of the color of the stripes are seen scattered. The hind legs and 
tail are variegated with black and bluish spots. 
Locality.—F rom Chagres, collected by Prof.C.B. Adams. Said to be also 
common at Panama. 
PLEstTIopon opsoLetum, B. and G.—Total length about nine inches. Body and 
limbs rather short and stout; tail longer than the body, conical, and rapidly 
tapering away. Parieto-occipital and vertical the largest of all the cephalic 
plates; rostral, labials, and temporal ones considerably developed. General color 
greenish white; uniform below ; the scales on the back and sides are thinly mar- 
ginated with black. 
Locality.—Valley of the Rio San Pedro of the Rio Grande del Norte. 
Encarta Nozitis, B. and G.—This is the most beautiful species of the 
genus. The body and tail are slender and elongated; the limbs slender and 
rather short. The ventral shields are twelve rowed; fourteen longitudinal rows 
of scales on the back, obscurely keeled. The ground color is olivaceous; the 
upper surface of the head, the belly and lower surface of the tail, are dotted with 
black. From the occiput to the origin of the tail, there are nine or ten trans- 
verse blackish brown bands on the back, covering two or three rows of scales, 
margined posteriorly with white. The intermediate spaces between these brown 
bands are of the same width as the bands themselves. Upwards of twenty brown 
half-rings are observed on the tail, the width of which isa little less than the 
intermediate spaces. 
Locality.—Fort Webster, Copper mines of the Gila, (Santa Rita del Cobre,) 
New Mexico. 
The Committee to which was referred Dr. Le Conte’s remarks on the 
Coccinellidz of the United States, and also on his description of a new 
species of Trombidium, reported in favor of publication. 
Remarks upon the CoccineLuipe of the United States. 
Ee By Joun L. Le Conte, M.D. 
It is not my intention on this occasion to present a synopsis or catalogue of the 
native species belonging to the present group. The very elaborate and carefully 
written work of Mulsant* renders such a labor entirely superfluous. I propose 
now merely to present some views on the classification of the genera of this 
family, and to add descriptions of the new species which have recently been 
obtained. ; i 
On account of the difficulty of distinguishing the species of Scymnus, I have 
made new descriptions of all the species observed; the Corylophi, with but a 
single exception, are new, and I have, therefore, by adding a new description of 
that species, completed a monograph of that division of the present family. 
* Species des Coléoptéres Trimeéres Séecuripalpes. Lyon, 1850. 
