Schwartzophis, Mollov, 2009

Grazziotin, Hussam Zaher 1 Felipe Gobbi, Cadle, John E., Murphy, Robert W., Moura-Leite, Julio Cesar de & Bonatto, Sandro L., 2009, Molecular phylogeny of advanced snakes (Serpentes, Caenophidia) with an emphasis on South American Xenodontines: a revised classification and descriptions of new taxa, Papéis Avulsos de Zoologia 49 (11), pp. 115-153 : 148

Schwartzophis new genus

Type-species: Arrhyton callilaemum Gosse, 1851 .

Etymology: Named after Albert Schwartz, who made significant contributions to knowledge of West Indian herpetology; gender masculine.

Diagnosis: Complete loss of capitular calyces; presence of an apical awn (secondarily lost in S. funereum due to reduction of the distal region of the lobes); reduction or loss of hemipenial lobes;

Content: Schwartzophis callilaemum Gosse, 1851 new combination; Schwartzophis funereum Cope, 1863 new combination; Schwartzophis polylepis Buden, 1966 new combination.

Arrhyton Günther, 1858

Type-species: Arrhyton taeniatum Günther, 1858 .

Diagnosis: Medial papillate crest extending from lobular crotch to the edge of the capitulum on each lobe, forming a Y-shaped structure on the distal region of the hempenial body;

Content: Arrhyton dolichurum Werner, 1909 ; Arrhyton landoi Schwartz, 1965 , Arrhyton procerum Hedges & Garrido, 1992 ; Arrhyton supernum Hedges & Garrido, 1992 ; Arrhyton taeniatum Günter, 1858 ; Arrhyton tanyplectum Schwartz & Garrido, 1981 ; Arrhyton vittatum Gundlach in Peters, 1861.