AGASSiz, 1850 245 



1850 



420. AGASSIZ (1850). Lake Superior: Its Physical Character, Vegetation, and 



Animals, Compared with Those of Other and Similar Regions, etc. 

 Louis Agassiz. 

 Poecilosoma Agassiz, 299; haplotype Etheostoma variateum Kirtland. Preoccu- 

 pied ; replaced by Pcecilichthys Ag., 1854. 

 Argyrosomus Agassiz, 339; haplotype Salmo clupiformis Ag., not of Mitchill = 

 Salmo harengus Rich. Name preoccupied (Pylaie, 1834) ; replaced by 

 Thrissomimus Gill (1909). A subgenus under Leucichthys Dybowski. 

 Hypsolepis (Baird) Agassiz, 368; orthotype Cyprinus cornutus Mitchill. Written 

 Hypsilepis by Cope. 



421. BLEEKER (,1850). Bijdrage tot de kennis der Mcenoiden van den Soenda- 



Molukschen Archipel. Verb. Batav. Genootsch., XXIII. 



PlETER BlEEKER. 



Pentaprion Bleeker, I, 104; orthotype P. gerreoides Blkr. 



422. BLEEKER (1850). Bijdrage tot de kennis der visschen met doolhofvormige 

 kieuwen van den Sosnda-Molukschen Archipel. Verb. Batav. Genootsch, 

 XXIII, 1850. 



PiETER Bleeker. 

 Betta Bleeker, XXIII, 12; orthotype B. trifasciata Blkr. 



423. COSTA (1850). (Fossil Fishes: Ittioliti.) Atti Accad. Pontan, V. 

 Oronzio Gabriele Costa. 



Sarginites Costa, V, 285; orthotype, S. pygm^us Costa (fossil). A synonym of 

 Leptolepis. 



Histiurus Costa, V, 288; orthotype H. elatus Costa. Preoccupied as Istiurus Cuv., 

 1829, emended as Histiurus Ag. ; replaced by Knightia Jordan, 1907 ; type 

 K. eoc^na Jordan. 



Rhynchoncodes Costa, V, 317; orthotype R. scacchi Costa (fossil). A synonym 

 of Propterus Ag. 



Blenniomoeus Costa, V, 319; orthotype B. longicauda Costa (fossil). A syno- 

 nym of NOTAGOGUS Ag. 



Sauropsidium Costa, V, 322; orthotype S. l>5:vissimum Costa. 

 Megalurites Costa, V, 370; orthotype Diodon scill^ Ag. (fossil). A synonym or 

 fossil ally of Diodon. 



424. DIXON (1850). The Geology and Fossils of the Tertiary and Cretaceous 



Formatioyts of Sussex. 

 A. Francis Dixon. 

 Platylaemus Dixon, 205; orthotype P. colei Dixon (fossil). 

 Aulodus Dixon, 366; orthotype A. agassizi Dixon (fossil). A synonym of Ptycho- 



DUS Ag. 

 Plethodus Dixon, 366; logotype P. expansus Dixon (fossil). (Not Plethodon 



Tschudi, a genus of lizards.) 

 Pomognathus Dixon, 367; orthotype P. eurypterygius Dixon (fossil). A syno 



nym of Halec Ag. 

 Prionolepis (Egerton) Dixon, 368; orthotype P. angustus Egert. (fossil). 

 Homonotus Dixon, Z72; orthotype B. elegans Dixon (fossil). 

 Berycopsis Dixon, 372; orthotype B. elegans Dixon (fossil). 



