164 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 

 The following genus is very nearly allied, viz : 



Peolatilus. 



Sijnonymy. 



=Prolatilu8 Gill, Proc. Acad. Nat. Sci. Phila., [v. 17,] p. 67, 1865. 

 latilus sp. Guv. & Val., Jenyns, GUnther, etc. 



Type Prolatilus jugularis=Latilus jugularis C. & V. 



Apparently closely related to Prolatilus is Pinguipes, viz : 



PiNGUIPES. 



Synonymy. 



=Pingmpes Cuv. Sf Val., Hist. Nat. des Poissons, t. 3, p. 277, 1829. 



Type Pinguipes hrasilianus C. & Y. 



The following genus has been associated with the preceding by all 

 who have treated of them, save Dr. P. von Bleeker. That ichthyologist 

 has referred Latilus to the family of ^'Percoidei" and its tenth subfam- 

 ily, "Spariformes" and "Phalanx Denticini," and removed Gaulolatilus 

 and Prolatilus from all close relationship therewith. "(Spec, plures 

 familife Parapercioid. adnumer.)" What are the exact affinities must be 

 determined by a study of the anatomy. 



Latilus. 



Synonymy. 



<Latilus Cuv. ^- Vol., Hist. Nat. des Poissons, t.5, p. 369, (t,9, p. 495,) 1830. 

 =L<itilus Gill, Proc. Acad. Nat. Sci. PMla., [v, 17,] p. 67, (by exclusion,) 1865. 

 =Latilus Bleeker, Archives N6erland. Sc. exactes et nat., 1. 11, p. 279, 1876. 



Type Latilus simus=Gorypliwna sima Bl. Schneid.=l/(i^*7Ms argentatus- 

 G. & V. 



To Latilus the following genus seems to be most nearly related, but 

 whether such is really the case cannot be considered settled till its oste- 

 ology is examined. 



LOPHOLATILUS. 



Synonymy. 

 =Lopliolatilu8 Goode ^- Bean, Proc. U. S. Nat. Mus., v. 2, p. 205, 1879. 



Type Lopliolatilus cliamwleonticeps Goode & Bean. 



