1020 



Bulletin 42, United States National Museum. 



The following are the numbers of the vertebrae in species of Perddwas 

 given by Jordan & Eigenmann and by Boulenger: 



Perca fluviatilis 



Perca flavescens 



Lucioperca volgensis 



Lucioperca saudra 



Stizostediou vitreum 



Zingcl asper 



Zingi'l ziugel 



Percarina doniidofRi 



Acerina cernua 



Percina caprodes 



Hadropterus aspro 



Hadroptei'us evides 



Hadropterus phoxocephalus. 



Hadropterus scierus 



Etheostuma zonale 



22 -f 19 = 

 22 + 19 = 

 22 + 21 = 

 25 -(- 21 = 

 25 + 21 = 

 20 + 24 = 



22 + 26 . 



14 + 19 = 



15 + 19 = 



23 + 21 = 

 19 + 23 = 



18 + 22 : 



19 + 20: 



18+22: 



10 + 23 : 



= 41 

 = 41 



:43 



= 46 

 = 40 

 = 44 

 = 46 

 = 33 

 = 34 

 --44 

 = 42 

 = 40 

 = 39 

 = 40 

 = 39 



Etheostoma maculatum 15 + 24 = 39 



Boleichthys f'usiformis 16 + 20 = 36 



Etheostoma variatum 15 + 21 = 30 



Etheostoma lepidum 16 + 19 = 35 



Etheostoma whipplii 15 + 21=36 



Etheostoma flabellare 13 + 20 = 33 



Microperca punotulata 14 + 10 = 30 



Cottogaster cupelandi 18 + 20 = 38 



Boleosoma camurum 17 + 21=38 



Boleosoma nigrum 15 + 22 = 37 



Ulocentra siraotera 15 + 23 = 38 



Diplesion blennioides 19 + 23 = 42 



Ammoorypta pellucida 23 + 21 = 44 



Amraocrypta vivax 21 + 20 = 41 



463. STIZOSTEDION,* Rafmesque. 

 (American Pike Perches.) 



Stiaostedion, Rafinesque, Ichth. Ohiensis, 23, 1820, {salmonea). 

 Pomacampsi.':, KAFiNESgUE, Iclith. Ohiensis, 23, 1820, {iiigropunclata; mythical). 

 Oynoperca, Gill & Jordan, Bull. U. S. Nat. Mas., x, 44, 1877, (caiiadense). 

 Slizostedium or Stizostethium, amended spelling. 



Body elongate, fusiform, the back broad. Head subconical, long. 

 Cheeks, opercles, and top of the head more or less scaly. Mouth large, 

 the jaws about equal; premaxillaries protractile, little movable. Teeth 

 in villiform bauds, the jaws and palatines with long, sharp canines. Gill 

 rakers slender, strong; gill membranes separate. Preopercle serrated, 

 the serifB below turned forward; operele with 1 or more spines, termina- 

 tions of radiating stri;v. Dorsal fins well separated, the first with 12 to 

 15 spines, the second with 17 to 21 soft rays; last dorsal spine not erectile, 

 bound down by membranes; anal spines 2, slender, closely appressed to 

 the soft rays, which are rather long, 11 to 14 in number. Ventral fins 

 well separated, the space between them equal to their base ; ventral spine 

 slender, closely appressed to the soft rays. Scales small, strongly ctenoid ; 

 lateral line continuous. Branchiostegals 7. Pseudobranchiie well devel- 

 oped. Pyloric coeca 3 to 7. Two species, differing considerably from each 



*The genus StiMstedirtn is closely related to the European genus Lucioperca, Cuvier (type Perca 

 lucioperca, L.). From Lucioperca, however, it ditTers sufficiently in the wide-set ventrals and in the 

 we.ak develoimiont of the anal and ventral spines, which are closely approxiniated to the soft rays. 

 The dorsals in I.iniopfrca are slightly connected. The name Lucioperca, according to Boulenger, 

 "should date from the first edition of the Regne Animal, 1817, when Cuvier (p. 295) does use the 

 Latin name [as well as the French plural '■ Le» Sandres''] ('ce qui leurafait donner le noni de 

 Ivcio-perca'') although indirectlj' and without a capital." (Boulenger, Pror. Zoiil. Soc. Lond., 

 1892, 411.) But, as Dr. Gill has shown, this is too great a strain on the words of Cuvier, wlio 

 "simply stated a historical fact and did not fornuil.ate a nomenclatural proposition." In other 

 words, Cuvier states that the name Luciopcrra was used by Gesner, luit to the genus to which 

 Gesner's Lucioperca belongs he supplies only the French name " Les SaudreK," and Lucioperca can 

 only date from its use by Fleming, Phil, of Zoiil., 394, 1822. Since that time, the names Sandat, 

 Cloquet, 1827; Sandnix, Stark, 1828, and Si-hilus, Krynicki, 1832, have been applied to the typo of 

 Lucioperca. See Boulenger, I. c, and Gill, Proc. V. S. Nat. Mus., 1894, 123, for discussions of tho 

 relationships and nomenclature of the Pike Perches. 



