64 LeConte on the Pselaphide of the United States. 
EXPLANATION OF THE FIGURES. 
Fic. 1. Side view. 
Fic. 9. View from beneath; abdomen opened. 
a. Liver, c. Superior ovary, 
b. Alimentary canal, i. Inferior ovary. 
Fic. 3. Bones of the cheek and jaw. : 
Jugal, d. Maxillary, 
b. Tympanal, e. Intermaxillary. 
c. Temporal, 
Fic. 4. Outline as seen from above. 
The slender body which is seen beneath the throat in Fig. 1, extending 
in a curve from the symphysis of the lower jaw to the tongue, probably 
did not exist in that form during life ; neither was the tongue separated 
from the jaw, as shown in the figure. The integuments and parts form- 
ing tbe throat have been lacerated, and their original appearance we can- 
not now determine. 
Arr. VII.— On the Psetarawe of the United States. By 
Jous L. Le Conte, M. D. 
Tne interesting little Coleoptera which are the subjects of 
the following essay, from the peculiarities of their structure, 
have received a more than ordinary degree of attention from 
scientific men. Still it is obvious, from the small size of the 
species, (none exceeding two lines,) and the rarity of their 
occurrence, that our knowledge respecting them may yet, be 
very much increased. The slight interest which the science 
of Entomology has awakened in this country, and the search 
made after large and conspicuous species, rather than those - 
which from peculiarities of form or habit might be expected 
to give more information with regard to the true system of 
organic life, have caused many very curious objects to remain 
unknown. 
