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Show 222 MR. T. D. A. COCKERELL ON THE [Apr. 7, forms of considerable size, is found along the Pacific coast of the United States and in British Columbia, while a subspecies of A. call-fornicus occurs even so far south as Costa Rica. Prophysaon has a somewhat similar distribution, but does not go into Central America; it has its strongest development in the State of Washington, and goes inland as far as Idaho. Anadenulus, a monotypic genus allied to Anadenus, is confined to Southern California. Binneyince. This subfamily is proposed for certain slug-like genera, resembling the Helicarionince outwardly, but having the jaw and dentition of Arionince. Binneya, J. G. Coop. ( = Xanthonyx, Cr. & F.), maybe taken as the type. It is found in Mexico and on Santa Barbara Island, off the coast of California. Mr. W . G. Binney sent me a shell of B. notabilis from the latter locality. Cryptostracon, W . G. Binn., from Costa Rica, and Hemphillia, Bl. & Binn., from the N.W. United States, both monotypic genera, may also be conveniently referred here, and also Peltella from Brazil, with the allied or identical West-Indian genus Gceotis, Shuttl. Curiously, also, the genus Otoconcha, Hutton, from North Island, New Zealand, has all the characters of this subfamily, nor is this the only resemblance between the Mollusca of Western North America and N e w Zealand. Oopeltince. Contains only the genus Oopelta, Morch, in Heynem., from the Guinea and Cape of Good Hope regions. I have never seen the type species, 0. nigropunctata, but I refer the "Arion" aterrimus, Gray, contained in the British Museum, to this genus. LIMACIDJE.-Limacince. (1) L I M A X , auctt.-This genus, as restricted by modern authors, is indigenous only in the Western Palaearctic or European region. It is true that many species of Limax have been described from distant regions, but in every case, so far as can be ascertained, they are either European species introduced (thus L.jiavus received two synonyms in Australia) or they do not belong to Limax at all. The most typical form of Limax has its greatest development in Northern Italy, and consists of numerous species or subspecies allied to L. maximus, L., and L. cinereoniger, Wolf. Allied to these is L. flavus, L., which has become almost cosmopolitan through its introduction intovarious countries by human means. Thus, the British Museum contains examples of this species from Rarotonga and the New Hebrides (Rev. Wyatt Gill), St. Helena (J. C. Melliss), Sydney ('Challenger'' Coll.), Savannah, United States (TV. G. Binney), and I have received it from Washington, U.S.A. (Dr. R. E. C. Stearns), Lexington, Virginia (Prof. J. H. Morrison), and Burliugton, New Jersey (W. G. Binney). Another subgroup (Lehmannia, Heyn.) has its type in L. marginatus, Mull., a species widely distributed in |
