NATURAL SCrEVCES OF I >HELAI ILPHIA. 45 



L859, but il leem ed iletohavc ; ablished in the Proceed- 



ingg )f the _-_:ademy. 



The family of Pert r :a tie "eecni ei:t::n 



of his " Regne Animal."' contained too unlike and h _- a-s^n- 



blage of genera t : 7 med a natural one. 7 r. chiefly embracing 



: the old Linneaa . : 1 having seven branchiostegal r 



rong family resemblance, with, perhaps, the exception of the g e mma 



Apogon and Chilodipterug of Lacepede, Pamatomau of Risso. and An-boxr. 



aerson. The last mentioned genera, although placed in 

 two dorsal fins and seven branch: . i interposed be* aera 



of the subfa: do not appear to be rarly 



related i fishes. 



other hand, the genera Porno-" Centrardtus '. Dales 



and Val.. placed in the section of the family with less than serea fran- 

 chiostegal rays and with a single dorsal fin. appear to be natural aflie 

 the F T - me time listingaiahed by 5 : me well marked peculi- 





 Of the remaining genera of the .-: : 7 - ids Orrlutes of Commerson 



and Chironatws of ,-r form a natural family to which should perhaj 



referred the ChUodaayli of Lacepede pl^ -amity of 



S a i-. 



7 icanthi of Cuvier appear to be either members of the family of Bolo- 



eentroid*, or perhaps, more properly, form a family 7 them 1 : : :i : 



former. 



rhe g 7 -:r m ,Dmbum, Pdata and Htiottt of C nes 



natural associaf elong to a peculiar group. 



The 7 - 'hodoru of Si a - the 77 - : f 7 : : - - - old be also 



withdrawn from the Per raay perhaps belong to ont . for 



- name of Traehinoida ained. 



The genei Pinqvipa. Sill'igo ani Ptrcopkk 0: ertaiaryde 



beloa_ :f Perec. 1- They seem 1 aite nearly allied to each 



other, and to 1 hmoub. 



The Urmmoseopi of Linnaeus form raral fan .ri:.:; :: ; 



Sch rogenoid Smamekeoidg aa 7 7. mmoiii. 



The -7 - .'! -..- r 1 ind Benft I y n:s: modern natural. " ; 



- ; belonging to a family -\a : from the Pc-rcoids 7? the 



family has leen also referred the genus TraciicktJnf* 7 S tl ~~ iich 



ma;- - in near, inury 



The 1 rd sion of Curier or the abdomin.. is a. een 



- - " .. " " ' . - - " . 1 .:_ a. a .--. ":... aistn . : 



on - 



numerous sub tr 7. one of the 



richest in genera and spe:- 5 ::a -.me time, one of the 



most natural and most universally distribut: found in 



the fresa - .nd lakes : r a", :a g :he shores of aim : - 



on*.. . family attains its highest aevelopment in thetrc: 



aiiiar are many of tr. s: - . es : the most i:;:aa: - . at 



tha: ' :s::nea fed fir rxanination can alea^ ieted 



5 of the name gen a; : the, 



'" ribbean Sea, m the Western . .-- r>ical 



America, and on all the - - f temperate . i tropical Asia and AM. : 1 



While the marine spec:-- is numerous and similar in ~. . pical 



' - 3 of the gi I - - - iter sj s attaia tr. - . : _ - 

 in -an . r ::.:"..-.-; :a :':.-_ :-.:::: r .:- ines TV; a : -. ra an :aa:aa: 



" m Europe and North ia : : ts peculiar 



to E~rc alanced :a > :r:a A jaui ibyf .a of that 



- The preponderance of both genet L of species is greatlv 



1861.] 



