RErOET ON ICnTHYOLOGY. ,",99 



ninning- tlironoli about fifty besides tlie smaller ones at the base of the caiuhil fin: at 

 the region of its greatest lieiglit, there ai-e about nineteen rows, of wln'cli about one 

 small and six large ones are above the lateral line ami eleven beneath, 'i'he relative 

 [jroportions on the different ])arts of the body aie nearly the same as in that species, 

 the chief difference existing- on tlie front of the liack, where the exposed ]»ortions of the 

 disk are higher and narrower than in J/, ((iiioicdiid. (Mi the cheeks from the oiliit to 

 the angles, there are seven oblicpie rows. 



Those on the body are mostly hig-her than loni;-, with the uueleus at al)ont the 

 posterior two-thirds, with numerous radiating-, slightK' termiualK , nnn'ieated, ridg-es 

 advancing- posteriorly, and ending in teeth. About seven radiating- ridges advance 

 forward, .some of them terminating- at the anterior margin within the angles. These are 

 crossed l)y numerous elevated concentric lines, parallel with the margins, 'j'lie scales 

 on the sides of the head and between the eves are also pectinated like those of the body. 



The lower jaw has ii\e pairs ot' mucous pores as in jlf. (inirrirdiiti, the fourth pair 

 being largest and deepest, and under the terminal portion of the maxillaries; thence 

 they regularly decrease in size to the anterior pair, which is on each side of the syni- 

 ])hysis. The fifth pair is .-it the articulation of the jaw with the preoperculum, and is 

 continued from the two inferior borders of that bone. 



The specimens preserved in spirits have a bright, brazen color, tinged on tlie back 

 with olivaceous. Along the sides are seven very distinct longitudinal black liauds, 

 through the fourth of which the lateral line runs for its entire length. The contimiity 

 of the bands below the lateral line is interruiJted at the posterior half of their length, 

 and they there alternate with their anterior parts. 



The dorsal fins are tinged with purple, and the margin of the spinous one is dark. 

 The anal is of a darker })urj)le toward its anterior angle. The caudal, especially pos- 

 teriorh' and at its middle, is purple. The rays of the pectoral and ventral fins are 

 yellowish, while the membrane of the foi-mer is hyaline, and of the latter sometimes 

 minutely dotted. 



This species, as will l)e observed b}' reference to the synonymy, has l)een descri])ed 

 by Dr. Charles Grirard, under the name of Lahrax chrijsops Girard {Pcrca or Lcplhcmd 

 chnjsops Raf.), to which is also referred, as a synonym, the Lahxax ninltHineaftis of 

 Olivier and Valenciennes, Kirtland, De Kay, and Storer. From that species, it is 

 very distinct, and even belongs to a different genus. Cuvier described the ground- 

 color as a greenish-grav on the back and silvery on the belly. This is not the color 

 of ILorom intcrnqda, and that species nuist be therefore distinct from Lahrax multiU- 

 neafas, nor can it be the Perm chrysopsoi Rafinesque, which is said to be "silvery with 

 five longitudinal brownish stripes on each side", and have the "head brown above". 

 The description of the Fcrca chri/snps, though erroneous in most respects, is as accurate 

 as Rafinesque's generallv are, and agree sufficiently well with Kirtland's Lahrax multi- 

 Uneatus, which is douljtless identical with the Cuvierian .species. Even such an observer 

 as Rafinesque would have noticed the deep brazen hue of Morone intcrrnpta, and w oiihl 

 not have overlooked two of the seven very distinct black bands that run along the 



sides. 



Dr. Girard has stated that there are but six Ijranchiostegal rays in his species; but 



