Abstract
The carabid cave fauna of North America has been known since the midnineteenth century through the work of Erichson (1844), Motschoulsky (1862), Leconte (1863), Horn ('1868, 1871, 1883), Hubbard (1880), Garman (1892), and Barber (1928). Jeannel (1920) distinguished the North American genus Pseudanophthalmus from the European genus Anophthalmus. Jeannel's monograph of the Trechinae (1928) and his subsequent description (1931) of additional anophthalmid species collected by him in American caves encouraged an extensive study of this unique group by Valentine (1931, 1932, 1937, 1945, 1948, 1952). It was felt that an extension of Valentine's excellent work, involving careful examination and analysis particularly of aedeagal structures, would provide further valuable information concerning the speciation pattem of this genus.
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