. The cave fauna of North America, with remarks on the anatomy of the brain and origin of the blind species. Cave animals; Caves. 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 ia the lake when the waters were at the level of the month of the cave. Prof. F. V. Hay den, in 1870, found in these beds Muminicola fusea Hald., Valvata sincera Say, Limncm catascopium Say, L. desidiosa Say, Amnicola limosa Say, Pomatiopsis cincinnatiens
. The cave fauna of North America, with remarks on the anatomy of the brain and origin of the blind species. Cave animals; Caves. 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 ia the lake when the waters were at the level of the month of the cave. Prof. F. V. Hay den, in 1870, found in these beds Muminicola fusea 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 Lacustriau 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 ; 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 Fig. 3.—Zonitcs eubrupicola. FAUNA OF CLINTON'S CAVE. Zonites subrupicola Dall. (Since found under stones above ground in California.—Dall.) Pohjdesm m cavicola Pack. Nemastoma troglodytes Pack. Tomocerusplumoeus, var. alba Pack. NOTE ON THE FAUNA OF A CAVE AT MANITOU,
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Keywords: ., bookauthorpackarda, bookcentury1800, bookdecade1880, bookyear1888
