OMISSIONS 409 



512A. MORRIS (1854). Catalogue of British Fossils. 

 John Morris. 

 Gyrosteus (Agassiz) Morris, 328; orthotype G. mirabilis Ag. First validation of 

 Gyrosteus and perhaps of some oth;r nominal genera of Agassiz. See No. 614. 



1855 



521. AYRES (1855). Description, etc. 



William O. Ayres. 



Cebidichthys Ayres. This is the original and correct spelling, not Cebedichthys. 



530. BLEEKER (1855). Sumatra, etc. 

 Pieter Bleeker. 

 Clupeichthys Bleeker, 275 ; orthotype C. goniognathus Blkr. This is a valid genus, 

 according to Weber, distinct from Corica. 



535A. GERVAIS (1855). Description d'uii poisson fossile du terrain cretace de la 

 Drome, etc. Ann. Sci. Nat., III. 

 pRANgois Paul Louis Gervais. 

 Histialosa Gervais. 322; orthotype H. thiolleri Gervais (fossil). 



543. PETERS (1855). Uebersicht, etc. 

 Wilhelm Peters. 

 Opsaridium Peters, 269; orthotype O. zambezense Peters. Description given as 

 from manuscript by Giinther. 1868. 



1856 



561. HECKEL (1856). Pycnodonten, etc. 



Johann Jakob Heckel. 



Stemmatodus Heckel, 202; orthotype Pycnodus rhombus Ag. This generic name 



is not preoccupied. Stemmatodus St. John & Worthen (1875) is preoccupied 



and replaced by Stemmatias Hay, 1899. 



572. PANDER (1856). Monographic, etc. 

 Christian Heinrich Pander. 

 Besides the nominal genera of Russian Silurian fossils listed by Wood- 

 ward, the following additional names are given by Marshall. These we are 

 not able to verify. 

 Drepanodus, 20. 

 AcoDUS, 21. 

 Machairodus, 22. 

 Paltodus, 24. 

 acontiodus, 28. 

 Prioniodus, 29. 

 Belodus, 30. 

 Ctenognathus, 32. 

 Gnathodus, ZZ. 

 Prionognathus, 34 

 Strosipherus, 7Z. 

 Monopleurodus, 78. 



1857 



582A. GIEBEL ( 1857) . Dichelodus, ein neuer Fisch im Mansf elder Kupferschiefer. 



Zeitschr. Gesammt. Naturw., IX, 121-126. 



Christoph (Gottfried Andreas) Giebel. 



Dichelodus Giebel, 121; orthotype D. acutus Giebel (fossil). 



