Remarks on Laius Guérin-Méneville and Dicranolaius Champion are provided. Laius falcifer Champion, 1921 is designated as the type species of Dicranolaius Champion, 1921. Dicranolaius bellulus is attributed to Boisduval (1835) not to Guérin-Méneville (1830). Dicranolaius c-purpureus (Lea) is redescribed and two closely related new species are described: D. weiri sp. n., and D. similis sp. n. Int...

The genus Macronemus Dejean, 1835 is redescribed and two new species are described: Macronemus mimus sp. nov. from Brazil (Bahia to Santa Catarina) and Argentina and Macronemus giuglarisi sp. nov. from French Guiana and Brazil (Amapá, Amazonas). M. verrucosus (Pascoe, 1866) is considered a new synonym of M. asperulus White, 1855. New distributional data and a key to the seven species of the gen...

Four-quark states are discussed within the constituent quark model. Incompleteness of existed studies of four-quark state with QCD sum rule is analyzed. The masses of diquark cluster were determined by QCD sum rules, and light four-quark states masses were obtained in terms of the diquark. The four-quark state possibility of the newly observed near-threshold pp̄ enhancement, X(1835), X(1812) and...

This talk should be regarded as an elementary introduction to differential algebra. It culminates in a purely algebraic proof, due to M. Rosenlicht [Ros2], of an 1835 theorem of Liouville on the existence of “elementary” integrals of “elementary” functions. The precise meaning of elementary will be specified. As an application of that theorem we prove that the indefinite integral ∫ e 2 dx canno...

Despite a good deal of argument to the contrary (Maughs, 1941; Hunter and Macalpine, 1963; Walk, 1954; Walk and Walker, 1961; Craft, 1965; Whitlock, 1967) it is still com monly believed that Prichard's 'moral insanity' (1835) was the forerunner of our present-day concept of psychopathic (sociopathic) personality; the most recent example of this appearing in the paper by Davies and Feldman (1981...

A new species of the genus Chrysolina Motschulsky, 1860 from Nagano Prefecture, Honshu, Japan is described as (Allohypericia) orochi sp. nov. with detailed illustrations male and female genitalia, description larva pupa, record its host plant, Artemisia capillaris Thunberg (Asteraceae). aeruginosa (Faldermann, 1835) excluded Japanese fauna based on revision previously published records.

In order to elaborate a planorbid chart of the State of Rio de Janeiro a survey of freshwater gastropods in the Metropolitan Mesoregion of this State was performed and revealed the occurrence of 20 species: Antillorbis nordestensis (Lucena, 1954); Biomphalaria glabrata (Say, 1818); Biomphalaria schrammi (Crosse, 1864); Biomphalaria straminea (Dunker, 1848); Biomphalaria tenagophila (Orbigny, 18...