70 
PROCEEDINGS OF THE ACADEMY OF 
tlie fifth stria, then two smaller ones, the position of which is nearer the suture, 
finally two transverse oblique ones reaching the margin, and a subapical dot. 
A. conata, valde elongata, cuneiformis, nigra supra pilis longis lanugi- 
nosis albis parce vestita, capite thoraceque grosse punctatis, hoc antrorsum vix 
angustato lateribus parum rotundatis, dorso triangulariter, ad basin utrinque 
suboblique excavato, elytris a basi sensim, postice autem magis oblique atten- 
uatis, punctis paucis parvis flavis ornatis, seriatim crenatis, interstitiis 3io 
Stoque totis, 7mo versus basin elevatis nitidis : subtus pr3ecipue versus latera 
longe albo-pubescens. Long. '38. 
One specimen found by me on the Colorado River, below the Grila. 
Agkilus Esch. 
A. muticus, obscure cyaneus opacus, subtiliter dense punctulatus, capite 
canaliculato, thorace latitudine haud breviore, lateribus rectis, rugoso, postice 
profunde canaliculato, lateribus ad medium late impressis, angulis posticis 
rectis extrorsum paulo vergentibus, carina basali utrinque parum elevata, 
raargine laterali duplici, elytris lateribus parum sinuatis, postice oblique an- 
gustatis, ad apicem rotundatis haud serratis. Long. '33. 
Texas, Mr. Haldeman. 
A. ma cer, valde elongatus, cupreo-seneus, capite canaliculato, thorace 
transversim rugoso, antrorsum latiore, latitudine sesqui breviore, medio postice 
late excavato, lateribus oblique profunde impressis, ad basin utrinque carina 
acuta munito, margine laterali superiore distincto, inferiore fere obliterate ; 
elytris lateribus subsinuatis, postice oblique attenuatis, ad apicem serratis 
acuminatis, confertim subscabro-punctatis, costa a humero ad apicem modice 
elevata. Long. -35. 
Eagle Pass, Texas ; Mr. Schott. 
ScHizopus Lec. 
Antennae, ll-articulatae, articulis 5 — 10 latioribus triangularibus, llmo 
ovata ; clypeus minutus in fronte emarginata receptus, labrum maiusculum 
antice subemarginatum, mandibulse emarginata. Mentum trapezoideum trans- 
versum (ligula invisa palpis deficientibus) ; palpi maxillares breves cylindrici, 
articulis subsequalibus : oculi mediocres o vales. Coxae anticae magnae trans- 
versae quadratae receptee ; mediae eis approximatae maiusculae distantes ; tarsi 
tibiis breviores, articulis 1 — 3 subtus breviter, 4to autem longe bilobatis, 
ultimo praecedentes tres longitudine sequante, unguibus ad apicem fissis. Ab- 
domen articulis duobus primis arete connatis, 5 to emarginato, 6to prominulo 
valde emarginato. 
A remarkable genus, which by its form and color recalls certain Gallerucites 
of the family Chrysomelinae, while the structure of the abdomen is equally 
suggestive of Psephenus. It seems by its general characters to belong properly 
among the Atopidae ; in which family, however, all the genera thus far de- 
scribed have but five ventral abdominal segments. The head is small ; the 
thorax is gradually narrowed in front, closely applied to the elytra, and 
slightly sinuate at base. The scutel is trilobed, with the middle lobe produced 
into a point. The elytra are wider than the thorax, oblong, rounded at the 
tip, coarsely but densely punctured. The legs are moderate ; the anterior 
tibiae are terminated by very short spurs, but I can see none on the middle or 
l)osterior tibiae. The anterior coxae are large, leaving only a very short pres- 
ternum, which extends between them, and abuts against the declivous mesos- 
ternum ; the metasternum is short and flat, forming an angle with the mesos- 
ternum, which widely separates the middle coxae ; the parapleurae are flat, 
broad, and project in front ; the posterior coxae are suddenly dilated inter- 
nally, truncate at tip, with the inner margin oblique ; their anterior margin 
is curved, with the concavity forwards, and the mesosternum is sculptured 
with a line parallel to this margin. The joints of the abdomen are nearly 
[March, 
