8 On the Anatomy &c. of some Teleostean Fishes. 



Recent jjenera are Adioryx, Starks (' Science/ xxviii. 

 1908, p. 614), Ilolocentrus, Scopoli, Myripristis, Cuv. (with 

 toothed maxillary), and Ostichthys, Langsdorff. The Creta- 

 ceous Homonotus, Dixon, seems to be near Myripristis ; the 

 fish described by Dr. Smith Woodward from tlie Chalk of 

 Kent under the name Trachitkyioides ornatus is known only 

 from the skull, which is very similar to that of some recent 

 species of Myripristis, although none of them show the 

 principal frontal ridges quite so far apart posteriorly nor the 

 radiating ridges so few. Dinopteryx, A. S. Woodward, with 

 seven anal spines, may be provisionally placed in this family. 



I propose the new generic name Caproheryx for the fish 

 from the Chalk of Kent described by Dr. Smith Woodward 

 under the name Berycopsis major (Pakeontogr, Soc. 1902, 

 p. 11, pi. ii. fig. 2). Of the vertical fins only the anal spines 

 are known, but the head and pectoral arch are well preserved 

 and indicate relationship to ihe Holocentiidse. In the short 

 pramaxillar}' processes and the absence of a prajopercular spine 

 Caproheryx resembles Myripristis, in the expanded prse- 

 orbital and the weak principal and numerous radiating frontal 

 ridges Holocentrus. But it differs from both in the greater 

 prominence of the occipital crest, which has the upper edge 

 thickened and longitudinally ridged ; in this and in some 

 other features it shows considerable similarity to Antigonia, 

 and it may be that this resemblance is due to real affinity and 

 that Caproheryx is nearest of all the Berycoids to the 

 Zeomorphi. 



The Berycomorphi as above restricted do not include the 

 Stephanoberycidse and Melamphaidse. These are probably 

 derived from the same stock as the Berycomorphous fishes, 

 resembling them in the structure of the protractile mouth, and 

 in the caudal fin, which has 19 principal rays, 17 of which 

 are branched, and the procurrent rays spinous. Not much 

 importance can be attached to the presence of large mucous 

 cavities on the head. They differ from typical Beryco- 

 morphi in the toothless palate, the absence of a subocular 

 shelf, and the triangular shajje of the single supramaxillary, 

 but especially in the absence of an orbitosphenoid. I find 

 that in both Melamphaes and Stephanoheryx the widely sepa- 

 rated alisphenoids extend well forward between the orbits, 

 but do not seem to be bridged by an orbitosphenoid *. 



• I have had no skeletons for examination, and in these two genera, as 

 in Anomaloj)s and Diretmus, I have only been able to see the arrangement 

 of the interorbital bones by a temporary displacement of one eye in a 

 epirit-specimen. 



