No. 492] FOWLER'S "HETEROGNATHOUS FISHES" 771 



dachner, defined and figured in his Fischfmma dcs Mar/dalmen- 

 Stromes, p. 51, pi. XIII, figs. 2-2b, which is mKiuestioiial)ly the 

 genus to which Belonocharax beani belongs, beani being probably 

 identical with the type insculptus. 



20, 21, 22. — I do not have the material to pass finally on the 

 status on the subgenus (20) Waiteina and the genus (21) Reganina; 

 both are apparently Colosoma, as (22) Starksina is probably a 

 Mylosoma. 



24. — The genus Sealeina is probably a valid subgenus of 

 Metynnis. 



The paper closes with descriptions and figures of Cope's two 

 species of Stethaprion. The figures lack details of the predorsal 

 spines which are essential. No attempt is made to compare 

 critically these two species and pass judgment as to whether the 

 one is simply a younger specimen (2|| in.) than the other (3^ in.) 

 although no one else is in as good a position to do so. 



The descriptions of Cope, pieced out with those here presented 

 and the numerous figures, will enable us without prejudice to 

 work out finally in most cases what species are really under con- 



We must feel grateful to Dr. Fowler for his labor. But it is 

 to be hoped that in the future he will be more conservative in 

 adding names to the science of ichthyology. The valid names do 

 not compensate for the work imposed on some one else to separate 

 them from the synonyms. 



An examination of Boulenger's types of Brachychalcinus shows 

 them to belong to two distinct genera. Referring Boulenger's 

 name to the species figured by him, the other species is congeneric 

 with Giinther's Tdraf/onoph ru.s comprcs'sus and most nearly 

 allied to Cope's Stethaprion. In recognition of Dr. Fowler's 

 generous effort I would propose, using a form adopted by Dr. 

 Fowler, the name Fowlerina to distinguish the genus represented 

 by the Tetragonoptenis compressvs Gunther. 



The members of the Stethaprioniiiae mark the direct road 



Tetrac/onopfcnis (in/fiifru.s' the post-veiitral region is trenchant, 

 the pre-ventral region flat. In Stichonodon both pre-ventral 



