MATtYI.AXT) OCOLOOICAL SI ll\ |;V 223 



varieties of /•'. nniriforme, ami especially to the oliler varieties of that 

 ijljeeies.'' N'augluui, 1 !»()(). 



Since the above uas puljli.-lied I'rui'e.s.sur (lark has sent me three more 

 specimens of this same species, but the material is not yet sufficient to 

 determine wliether tlie species is new or only a varietal form of some 

 species of the genus found fmiliei' souiJi. The best specimen is rep- 

 resented by Plate LXI, Figs. J, 2. The dimensions of this specimen 

 are: greater diameter of calice, 15.5 mm.; lesser diameter of calice, 8 

 mm.; height of cnrallum, l"?.o mm. Tliis s})eeimen is not so elongate 

 as the two specimens whose measurements are given above, but there 

 is siTfficient material to show that they represent only a single species. 

 It possesses nineteen large septa that reach the columella; in each of 

 eighteen of the loeiili between these large septa are three septa, one 

 longer with a shorter on each side. In one loculus there is a solitary 

 short septum. 



Comparison may be made with Flahdhnn cuneiforme var. pachyphyllum 

 Gabb and Horn, FlciMlum cuneiforme var. wailesi Conrad, and Fldbel- 

 luni jolinsoni Vaughan. From the first it differs by its epitheca being 

 not so dense, and the corallum is not so solid, the corallum is more 

 fragile; the second is coarser and larger; F. jolinsoni is not so compressed, 

 the measurements of its calice are: greater diameter about 14 mm., 

 lesser, about 10 mm. or slightly greater. The specimens from Yirginia 

 and Maryland are jDrobably nearest to F. jolinsoni. Its horizon is the 

 Woods Bluif beds of Alabama. 



Occurrence. — Xaxjemoy Fokmatiox. Woodstock (three specimens), 

 Aquia Foematiox. Aquia Creek (six specimens), 1 mile southeast of 

 Piscataway (two specimens, including the one figured). 



Collection. — Maryland Geological Survey. 



Family TURBINOLIDAE Milne-Edwards and Haime. 



Genus TURBINOLIA Lamarck. 



TuEBixoLiA ACUTicosTATA Yaughan, 



Plate LXI, Figs. 4, 4a, 4b. 



Turbinolia aeuticostata Vaiaghan, 1895, Johns Hopkius Univ. Circ, vol. xv, p. 6. 

 Turhinolia aeuticostata V'aughan, 1S96, Bull. Xo. 141, U. S. Geol. Survey, p. 89. 

 Turbinolia aeuticostata Vaughan, 1900, Mon. U. S. Geol. Survey, No. 39, p. 89, pi. 

 vi, figs. 13-lob. 



