126 TRANSACTIONS OF THE WAGNER FREE 



Jackson group of Mississippi, Conrad. Vicksburg, Miss., Heilprin. 

 Eocene nummulitic limestone of Richard's quarry, Ocala, Florida (as molds). 



This is not a Strepsidiira, and the reference to the mississippiensis is one of 

 those blunders due to haste which are not uncommon in Mr. Conrad's work. 

 The name mississippiensis lies just above, and was taken off instead of the 

 right one to which the figure-references refer. I have examined the types of 

 the several species. The first species of Papillina is a shell named by Conrad 

 Fiisus altilis (Tert. Foss., 2d ed., p. 43, pi. 18, fig. 16, 1835). The figure does 

 not clearly show the character of the nucleus, but it is really like the others. 

 As the species are arranged alphabetically, its standing first is unimportant. 

 The second is F. dumosiis, the last P. papillatits, which looks much like a Tudicla, 

 but wants the raised inner lip and the strong angular ridge or plait on the 

 columella in the genuine Tudicla. Beside these, on the same plate on which 

 they are figured, are Fusus protextiis (Fig. 7) and salebrosus (Fig. 13), the latter 

 perhaps the young of the former, but all agreeing in the peculiarity of the 

 nuclear whorls — a fact which I have confirmed by an examination of the type- 

 specimens at Philadelphia. The genuine TndicLa has a small, few-whorled, 

 swollen, irregularly coiled, smooth nucleus like that of Columbaria. The 

 nucleus of Papillina is perfectly regular, smooth and very large, its visible 

 surface turbinate or when more elevated somewhat like the upper whorls of a 

 smooth Strophia. I regard the resemblance in shape to Tudicla in P. papillata 

 as a purely external character and do not doubt that that species is more 

 nearly related to the others I have mentioned, and which resemble Tudicla 

 very slightly or not at all. The figure given is taken from a gutta-percha 

 " squeeze " of a mold collected by Mr. Willcox at Richard's quarry, Ocala, 

 Florida. The specimen is not spinous at the angles of the shoulder and con- 

 sequently its appearance is more regular than the typical form of duniosa, but, 

 as in Melongena, the spines are variable characters, and are often absent, or 

 obsolete. 



Subgenus Fusus s. s. 

 Fusus equalis Emmons. 



F. egnalis Emmons, Geol. Rep. N. Car., p. 250, fig. iii, 1S58. 

 Neptunea equalis Conrad, Proc. Acad. Nat. Sci. Phila. 1862, p. 560. 



Cape Fear River Miocene, North Carolina (Emmons). Alum Bluff (upper 

 bed), W. Florida ; Burns. 



This fine species appears to be rather common at the Alum Bluff locality. 



Fusus Burnsii Dall. 

 Fusus sp. Conrad, Foss. Med. Tert., pi. 49, fig. 4, Jan., 1845. 



Miocene of Virginia at Petersburg, etc., Willcox. 



A fine specimen of this species under the name of F. exilis Conrad was 

 received from Mr. Willcox. F. exilis Conrad was described and figured in 

 his Foss. Shells of the Tert. Formations of the U. S., ist edition, p. 17, fig. 



