TRANSACTIONS OF WAGNER 



TERTIARY FAUNA OF FLORIDA 



Solen amphistemma n. sp. 

 PLATE 39, FIGURE 8. 



Oligocene of the Chipola beds at Alum Bluff and on the Chipola River, 

 Florida, and of the Oak Grove sands, Santa Rosa County, Florida. 



Shell large, short, straight, rather convex; anterior end obliquely trun- 

 cate, with the inner margin thicke'ned, but no external furrow ; posterior end 

 squarely truncate ; basal parallel with the dorsal margin ; exterior smooth, 

 except for incremental lines; beaks inconspicuous, slightly behind the an- 

 terior, dorsal angle of the valve, the teeth normal, the nymphs narrow, elon- 

 gate, not prominent; anterior adductor scar irregularly reniform, posterior 

 rounded triangular; the pallial sinus shallow. Lon. of shell 112, alt. 27.5, 

 diam. 18 mm. 



This very fine species is almost invariably in fragments. It does not closely 

 approach any other of our Solens. 



Solen sicarius Gould. 

 Solen sicarius Gould, Shells of the Wilkes Exploring Exped., p. 387, fig. 501, 1852. 



Miocene (Cooper) to recent on the Californian coast; not uncommon in 

 the Pleistocene sands of San Pedro Hill. The living shell ranges from Van- 

 couver Island to San Pedro, California, and is said to occur in Japan. 



Solen rosaceus Carpenter. *' 



Solen (sicarius var. ?) rosaceus Cpr., Suppl. Rep. Brit. As., 1863, p. 638; Ann. Mag 



Nat. Hist., 3d Ser., xv., p. 177, 1865. 



Miocene (Cooper) and Pliocene of California; Pleistocene of San Diego; 

 recent from Santa Barbara south to the Gulf of California. 



Solen viridis Say. 



Solen viridis Say, Journ. Acad. Nat. Sci. Phila., ii., p. 316, 1821 ; Conrad, Am. Mar. 



Conch., ii., p. 28, pi. 5, fig. 2, 1831. 



Pleistocene of South Carolina at Simmons Bluff; recent from Rhode 

 Island (Totten) to Georgia (Postell). 



This appears to be a rather rare species, of which the largest and finest 

 specimens I have seen are those obtained by General Totten in Narragansett 

 Bay, and which passed with his collection into the possession of the National 

 Museum. 



