88 Bulletin 4 203 



very strongly carinate form. Fusits mississippiensis, Con., from 

 Vicksburg, resembles this form, but this is more carinate, with 

 longer canal and spire; the latter species has many more revolv- 

 ing lines, and the outer lip is striate internally. Named in 

 honor of Dr. Otto Meyer. ' ' 



The specimens from the Matthews' Landing horizon are very 

 different from those from Wood's Bluff. The bodj^ whorls are 

 not so widely different as are the spires. In the Matthews' 

 Landing — Oak Hill type there are as high as 18 costse on some of 

 the whorls. They are sharp, well defined, direct from the suture 

 to the sharp carina. In the Wood's Bluff forms the costse on the 

 spire number the same as on the body whorl, about 7 or 8; they 

 are also of the same form. Again, in the Wood's Bluff forms 

 there is no tendency for the third line below the keel to become 

 very prominent as it does in the Matthews' Landing specimens. 

 It is possible the two may be united by intermediate forms, but 

 there is reason certainly for doubting it. The Wood's Bluff 

 forms resemble closely F. unicarinatus. 



7>/>^.— Collection of T. H. Aldrich. 



Specimen figured. — i mi. W. of Oak Hill, Ala. The same 

 variet}^ is also found in Dale's Branch. 



Fiiszis ostrariipis, PI. 8, fig. 13. 



Syn. F. ostrartipis—Vroc. Ac. Nat. Sci., Phila., 1895, P- 72, 

 pl- 7. fig- 3- 



Harris' original description. — "General form as figured; whorls 

 8; I and 2 smooth and polished, 3 sometimes polished, with long, 

 undulating costae, 4, 5, 6, 7 evenly striate spirally, and with 

 seven or eight longitudinal costse; costse decreasing in size, about 

 or just below the suture where a slightly depressed zone occurs; 

 body whorl with eight or ten costse ..somewhat variable in size, 

 subsutural zone much compressed, spiral strise moderately even 

 but slightly strongest on the largest part of the whorl; labrum 

 strongly striate within; columella recurving; umbilicus rudimen- 

 tary. 



''Locality. — Smiley's Bluff, Brazos river, 2 miles above the 

 mouth of Pond creek, Milam Co., Tex. Oyster Bluff of Pen- 

 rose's Report. 



''Geological horizon. — Midway Eocene. 



"Type. — Texas State Museum." 



