SECTION IV. 



CRUSTACEA (BALANID.1E) OF THE MIOCENE MARTjS OF NEW JERSEY. 



Class CRUSTACEA. 



Order CIRRIPEDIA. 



Family BALANIO^^. 



Genus BALANUS. 



BALANUS PROTEUS. 



Plate XXIV, 'figs. 18-2.3. 



Balanus proteus Conrad: Jour. Acad. Nat. Sci. Pbila., ser. i, vol. 7, p. 134; Miocene 

 Foss., p. 77, PI. XLiv, fig. 1 ; Meek, Clieck List Miocene Foss., p. 23. 



"Shell subconical; with strong prominent ribs, varying from one to 

 three on each valve; aperture ovate. Length, 2 inches; height, li inches. 



"A very common species, modified in form by whatever surface it may 

 be attached to; it is either ribbed, striate, or rugose; on a plane surface it is 

 smooth, with a few strong ribs." (Conrad in Jour. Acad. Nat Sci., vol. 7.) 



"Conical, with profound in-egular ribs, and fine longitudinal and strong 

 transverse wrinkles ; ribs unequal in length and prominence, smooth; inter- 

 stitial plates naiTow, longitudinally striated; aperture acutely ovate, mod- 

 erate." (Miocene Fossils.) 



No entire individual of this species has been obtained from the New 

 Jersey deposits, so far as I am aware ; but numerous separated plates are 

 in the collection at Rutgers College. Specimens from Virginia and other 

 Southern States are common and often of large size, and are found in large 

 and dense masses. The fonn is similar to that of the common Balanus 

 of our coast, being rather broadly conical, with the sides covered with 



