MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 
21 
Hald., A. cincinnatiensis Anthony, and Pomatiopsis lapidaria Say. It is plain that this marl is from 
the Bonneville beds of Mr. Gilbert, containing shells which lived in the lake when the waters were 
at the level of the mouth of the cave. Prof. F. Y. Hayden, in 1870, found in these beds Fluminicola 
frisca Hald., Valvata sincera Say, Limncm catascopium Say, L. desidiosa Say, Amnicola limosa Say, 
Pomatiopsis cincinnatiensis. Afterward Mr. Gilbert found ! he following additional species: Pom- 
atiopsis lustrica Say, Succinea lineata Binu., and a Cypris (?). This formation was regarded as 
Quaternary by Dr. Hayden. Mr. Gilbert regards the deposit as a 
Lacustrian one, thrown down during the glacial epoch, when “the 
great climatal revolution which covered our northeastern States with 
ice was competent to flood the dry basin of Utah.” The cave, then, 
is of very recent origin, and as it is only perhaps 200 feet above the 
present level of the lake, the highest terrace or raised beach being 
1,000 feet above the present level, Clinton’s Cave was not excavated 
until the latter half or last third of the Quaternary epoch, and it was 
not until some time after then that the ancestors of the present in¬ 
habitants obtained a foothold, and that nearly the present relations of the existing fauna of Utah 
were established. That this was the case is further supported by the fact that the species of 
animals found in the cave are such as may have been descendants of an assemblage which flour¬ 
ished when the country was more humid than now. 
FAUNA OF CLINTON’S CAVE. 
Zonites subrupicola Dali. (Since found under stones above ground in California.—D all.) 
Polydesmus cavicola Pack. 
Nemastoma troglodytes Pack. 
Tomocerus plumbeus, var. alba Pack. 
NOTE ON THE FAUNA OF A CAVE AT MANITOU, COLORADO. 
I made a brief examination of a large but very dry cave, about 600 feet long, opened to trav¬ 
elers in 1874, in the Carboniferous limestone in Williams Cation, at Manitou, Colorado. The only 
life found in the cave was a beetle, identified by Dr. Horn as Diclidia Icetula Le Conte, two flies, and 
three Coleopterous larvae. The beetle occurred near the entrance, and did not differ materially 
from other specimens which I collected under stones in the canon near the 
entrance to the cave. A species of Mycetophilid fly also occurred near 
the door, as well as a specimen of Blepharoptera defessa Osten Sacken, 
not differing from specimens which occur in various caves in Indiana 
(Wyandotte), Mammoth Cave, and adjoining caverns. The occurrence of 
this species in caves so remote is interesting. No Diptera, I am informed 
by Baron Osten Sacken, are peculiar to caves, though this species is com- 
fig. 9 .—Biciidia imtuia and larva. mon j n most of our caves, especially near the entrance, and has not been 
found elsewhere. Associated with the beetle were three larva;, which I am inclined, with some 
doubt, to regard as the young of Diclidia Icetula Le Conte. It seems to agree with the family char¬ 
acters of the larvae of the Mordellidae, as laid down by Chapuis and Candbze; but of course, until 
sortie one rears it, the identification will be uncertain. I give meanwhile a brief description of it. 
In general form it is like the larva of Anaspis, the body being rather long and narrow, the 
head nearly as wide as the prothoracie segment, the body a little wider than the head, thickest in 
the middle, and gradually tapering toward the end; head as long as broad, subtrapezoidal, some¬ 
what square, the sides not very convex, the surface depressed, with a few scattered hairs. An- 
tennse as long as from the base of the head to their insertion; four-jointed; second joint a little 
wider and one-third as long as the third joint; the fourth joint as long as the third is thick, ending- 
in three or four hairs. Mandibles acute, not very long. Maxillary palpi one-third as long as the 
entire maxilla, being small and short, appressed to the head; three-jointed, the joints subequal; 
second joint short, the third nearly twice as long as the second. Labium small; palpi feeble, 
short, and small; two-jointed, the joints subequal. No eyes can be detected. Prothoracie seg¬ 
ments well rounded in front, nearly as long as broad; Second abdominal segment not much longer 
than the third; the terminal segment narrows rapidly behind, ending in a pair of upeurved spines, 
Fig. 3 .—Zonites subrupicola. 
