Solem a (62 Ergebnisse)

Zustand: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In poor condition, suitable as a reading copy. Dust jacket in poor condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,700grams, ISBN:0471…

Zustand: Fair. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. Book contains pencil markings. In fair condition, suitable as a study copy. Dust jacket in fair condition. Please note the Image in this listing is a stock photo and may not match the covers of the ac…

A paratype of Radiodiscus hubrichti Branson, 1975, compares exactly with material of Striatura (Striatura) pugetensis (Dall, 1895). The two taxa are considered to be synonyms. Scanning electron microscope photographs of shell sculpture in the two distinct species, S. (S.) pugetensis and S. (S.) milium (Morse, 1859), show that th…

The genitalia and radular structure of several Mesodon [M. binneyanus, M. clenchi, M. clausus] and Triodopsis [T. (Neohelix) albolabris alleni, T. (N.) divesta, T. platysayoides] from Arkansas, Oklahoma and West Virginia [USA] are illustrated and discussed in relation to their potential significance in phylogenetic studies. The…

Dissection and scanning electron microscope studies of the Virginia land snail, Pylygyriscus virginianus (Burch, 1947), show that this species, previously associated with either Polygyra or Helicodiscus, is related to Helicodiscus and Stenopylis. The family group Helicodiscidae is redefined and differences from possibly related…

The functioning surface of the penis in Anguispira (Anguispira) shows consistent differences in pilaster pattern among A. alternata (Say, 1816), A. cumberlandiana (Lea, 1840), and A. picta (Clapp, 1920), although the gross appearance of their genitalia is nearly identical. Investigation of the conchologically divergent morphs lu…

Previous anatomical studies have placed Striatura (Zonitidae), Punctum (Punctidae), Radiodiscus (Charopidae) and Planogyra (Valloniidae) in unrelated families. Their minute size, similar shell shapes and the sharp differentiation between spiral sculpture on the nuclear whorls and the post-nuclear sculpture of major and minor rad…

Land snails sorted from bagged leaf litter on Karoni, Lakemba, and Mothe Islands in the Lau Archipelago of Fiji numbered 35 species. Literature and Field Museum of Natural History collection records add four others for a total of 39 species. There are now 13 recorded from Mothe, 20 from Karoni, and 22 from Lakemba. Nine of these…