SECTION IV. 



CRUSTACEA (BAIjANID^E) OF THE MIOCENE MARX.S OF NEW JERSEY. 



Class CRUSTACEA. 



Order CIRRIPEDIA. 



Family BALANID^. 



Genus BALANUS. 



BALANUS PROTEUS. 



Plate xxiv, figs. 18-23. 



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

 Foss., p. 77, PI. xliv, fig. 1; Meek, Check List Miocene Foss., p. 23. 



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

 three on each valve; aperture ovate. Length, 2 inches; height, 1 J 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 irregular ribs, and fine longitudinal and strong 

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

 stitial plates narrow, 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 form is similar to that of the common Balanus 

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



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