770 GEOLOGICAL SURVEY OF NEW JERSEY. 



MOLA, Ouv. 



M. mola, L. [rotunda, Cuv., Tetrodon, Orthagorincus analis.) Head-fish. 

 Sunfish. Mola (a millstone). 



Body in young shaped much as in preceding, but becoming 

 longer with age ; depth always more than half the length ; a 

 "nose" develops with age; skin thick, without spines, but 

 granular; vertical fins high in front, confluent with the low 

 caudal ; color dark gray ; sides brownish, with silvery ; belly 

 dusky ; a broad, blackish bar along bases of vertical fins. Dor- 

 sal rays, 17 ; anal rays, 16. 



" Specimens of this curious species are only occasionally met. 

 The writer found a specimen partially decomposed, on the beach 

 at Barnegat, in November, 1862."— [C. C. A.] 



" This concludes the list of the marine and fluviatile species of fish 

 found in the New Jersey waters, with whatever notes the author has 

 made, during his study of their habits, since 1859" (1868). — [C. 

 C. A.] ' 



Note. — It is but just to Dr. Abbott, as well as to the reviser, to 

 add that this Catalogue should have been enriched by the addition of 

 the facts concerning the distribution of the Vertebrates of New Jersey, 

 which have accumulated since 1868 (not incorporated into the general 

 works mentioned in our Introduction) ; but unfortunately the time 

 needful for this further research too far exceeded the limits set for 

 publication. It is hoped that in its present form, the Catalogue will 

 be more efficient in stimulating accurate observation and in facilitating 

 the gathering and organizing of all scattered information for the use 

 of a future reviser. — Julius Nelson. 



