GEKVAIS. 1852 251 



464. GERVAIS (1852). Zoologic et Paleontologie Frangaises. II. 

 pRANgois Louis Paul Gervais. 

 Sandroserrus Gervais, II, 8; orthotype Perca rebouli Gervais (fossil). 



465. LOWE (1852). An Account of Fishes Discovered or Observed in Madeira 

 Since the Year 1H42. Ann. Mag. Nat. Hist. London, ser. X. 

 Richard Thomas Lowe. 

 Leptorhjmchus Lowre, X, 54; orthotype L. leuchtenbergi Lowe. Name preoccu- 

 pied ; replaced by Belonopsis Brandt. A synonym of Nemichthys Rich. 



466. QUENSTEDT (1852). Handbnch der Petrefaktenkunde. 



Friedrich August von Quenstedt (1809-1889). 



Selachidea Quenstedt, 173; orthotype S. torolosi Quenstedt (fossil). Probably a 



.synonym of Hybodus. 

 Serrolepis Quenstedt, 207; orthotype S. suevicus Dames, (fossil). 

 Pleurolepis Quenstedt, 214; orthotype P. semicinctus Quenstedt (fossil). A syno- 

 nym of Tetragonolepis Bronn. 



467. ROEMER (1852). Die Kreidebildungcn von Texas und ihre organischen 

 Einschliissc. Mit einem die Beschrcibung von Versfeinerungen aus paliio- 

 zoischen und tertiHren Schichten enthaltenden Anhange und mit 11 von Chohe- 

 nach der Natur auf Stein geseichneten Tafeln. . Bonn. 



Carl Ferdinand von Roemer. 

 Ancistrodon (Derby) Roemer, 30; orthotype later called A. texanus Dames (fossil). 

 Teeth undetermined. Name preoccupied in snakes as Agkistrodon ; replaced 

 by Ankistrodus Koninck, 1870, scarcely better, and by Grypodon Hay, 1899. 



468. RUPPELL (1852). Verzeichniss der in dent Museum der senckenbergischen 

 naturforschenden Gesellschaft aufgesfellten Sammlungen. Vierte .\btheilung. 

 Fische und deren Skelette. 



WiLHELM Peter Eduard Simon Ruppell. 

 Microichthys Ruppell, 1 ; orthotype M. coccoi Riippell. 

 Pharopteryx Riippell. 16; orthotype P. benoit Riippell. Not Ph.^ropterx of 



Riippell, 1828, which is a synonym of Plesiops Guv. A synonym of Mora 



Risso. 

 ChcEfops Riippell, 20 ; orthotype C. meleagris Riippell. A synonym of Chcerodon 



Blkr. 

 Sarotherodon Riippell, 21 ; orthotype S. melanoTheron Riippell. 

 Erythrodon Ruppell, 34; orthotype Balistes ntger Lac, Balistes erthrodon Gthr. 



Substitute for Xenodon Riippell, 1835, preoccupied, but the name Odonus 



Gistel (1848) has priority and Zenodon Sw. (1829) is still older, if available. 



1853 

 469. AGASSIZ (1853). Recent Researches of Professor Agassiz. (Extract from 

 letter to J. D. Dana dated Cambridge, June 9, 1853). Amer. Journ. Sci., XVI. 



Louis Agassiz. 

 In this paper four new genera are briefly described. The species con- 

 cerned were not named until later. 

 Chologaster Agassiz, 135; (haplotype Chologaster cornutus Ag.). Short account 



of the genus, the species named later. 

 Heterandria Agassiz. 135; (logotype H. Formosa Ag.). Stated to contain two 

 species named later, H. Formosa and H. holbrookt, the latter being Gam- 



