OASTROPOI>\ '.l 7 '.l 



lx.pko.plr cwnlnll* I 



ih.it the base of his shell is more produced than in Prof. Saflord's species. This is 

 pmkilily a l-ipxus since the hight of the base, indeed of the whole last volution, 

 surely is relatively greater in /-. NNMMrwimtlMUiia L. mulH</ruma. Another closely 

 allied species, it is perhaps even nearer than I'mf Safford's, is our L. ampla. The 

 however, usually has a higher spire, but a more reliable and striking difference 

 is funiishe.1 l>y the sulisutural carina, whirh is wanting in L. multigruma. 



Formation and locality. Occurs In all three of the divisions of the Cincinnati period (Utlca, Lor- 

 raine and Richmond group*), very rrv In i In- lowest, at Coving-ton, KiTitu<-kv, mrr fi.-.pi.-ntly In the 



r i-iiiiiiiionly in thi- is at Ulcliiu<md, Versailles and Madl- 



*on, Indiana, Clark . and Miiysvlll.-. K.-nim-ky. 



CbUetMm.-K. O. flrlch. 



LOPHOSPIRA CKNTRAI.IS, n. sp. (Ulrich.) 

 PLATE LXXIII. no. t. 







flight 20 to 30 mm.; apical angle 60 or 61. Volutions five or six, all contigu- 

 \\ith a concave slope above, somewhat ventricose below the moderately 

 prominent, thick, faintly trilineate peripheral band; immediately beneath the band 

 a concave space bordered on the lower side by an obtuse carina which grows less 

 'i;-tiii.-t with age; no upper carina though occasionally a slight thickening may 

 occur at the upper edge of the whorls; umbilicus small, abrupt, nearly covered by 

 the inner lip. Aperture but little produced below, obliquely rounded-quadrate in 

 outline. Surface markings somewhat irregular and rather strong, especially 

 beneath the lower carina; above the latter they turn almost sharply backward to 

 the peripheral band; and on the upper side the retral curve is very decided. 



Closely related to M. }>er<ingulata Hall, but is a larger shell, has a wider apical 

 angle, and more rapidly enlarging volutions. The species is regarded as intimately 

 connected with L. oiceni and L. ampin. 



Formation and locality. Lowest division (Central limestone) of the Stone* River group, Murfreea- 

 boro, TenncMee. 



, E. O. Ulrich. (7 specimens.) 



LOPHOSPIRA CON M. sp. 



PLATE I.XXII. F108. -B. 



WIIITKIKLD, 1882. Geol. .,f WIs., vol. Iv, p. 21, pi. v, flg. 18. I ftj V tf(t& 



'Jl to :!1 in in.: greatest width about 7-10ths of the hight; apical angle 

 60 to 64"; volutions about MX. 



Of this species besides a single imperfect mold of the exterior we have seen 

 only casts of the interior. In the former the upper whorls are rounded, but on the 

 last two the periphery increases gradually in prominence until near the aperture it 



