A. Smith Woodward— Greensand Ganoid Fishes. 209 



Genus Anomceodtjs, Forir. 



A large form of splenial dentition from the Cambridge Green- 

 sand has already been provisionally ascribed to Anomoeodus, and it 

 is now possible to add undoubted evidence of a diminutive species 

 of this genus, besides a more doubtful example of a medium- 

 sized form. 



1. Anomoeodus snperhus, A. S. Woodward, Geol. Mag. Dec. Ill, 

 Vol. X (1893), p. 489, PI. XVI, Fig. 5. 



Type. Left splenial : Woodwardian Museum, Cambridge. 

 2. Anomoeodus confertus, sp. nov. PI. VIII, Fig. 3. 



Type. Imperfect right splenial : collection of James Carter, Esq. 



Teeth on splenial bone very closely arranged, and none except 

 perhaps the outermost with apical pit ; those of the principal series 

 not more than twice as broad as long, truncated at each end, their 

 long axis directly transverse, and their antero-inner point very 

 feebly turned forwards ; inner teeth in a single irregular series of 

 moderate size, and each slightly longer than broad ; those of the 

 innermost flanking series scarcely as large as the latter, somewhat 

 broader than long, and irregularly oval [outer flanking series 

 unsatisfactorily known]. 



The type specimen is the best fragment of this species hitherto 

 observed by the present writer, and the outer margin of the splenial 

 thus remains to be discovered. The dentition seems to most closely 

 resemble that of A. Muensteri, but is readily distinguished by the 

 proportions of the principal teeth. 



3. Anomoeodus Carteri, sp. nov. PI. VIII, Fig, 4. 



Type. Eight splenial : collection of James Carter, Esq. 



A small species known only by the splenial dentition, which is 

 well spaced. Teeth of principal series very obliquely set, pointed 

 at each end, not more than half as long as broad, and when unworn 

 with a slight transverse coronal furrow ; outer and inner teeth very 

 small and irregular, with crimped apical pit, none broader than 

 long, but the majority longer than broad ; inner teeth with tendency 

 to arrangement in two series ; flanking teeth in about three series 

 of approximately equal size. 



The type specimen, shown of natural size, from the oral aspect 

 in PI. VlII, Fig. 4, exhibits the outer toothless border of the splenial 

 element characteristic of the genus Anomoeodus; and this well- 

 preserved fossil is completely divested of matrix. On its inner 

 face there is a longitudinal groove for the reception of the persistent 

 meckelian cartilage. A second fragmentary specimen in Mr. Carter's 

 collection is similar ; and a third example of the splenial in the 

 York Museum (PI. VIII, Fig. 5) only differs in small particulars. 

 In the latter the innermost teeth are relatively large and with 

 obliquely directed long axis ; while the flanking teeth, which are 

 partly obscured by matrix, are arranged in three comparatively 

 regular series. 



DECADE IT. VOL. II. NO. V. 14 



