QA8TBOPOD4 



Fort. -in U,i> s|.,-irs i, known <vrtlnly only from the I'n.-a irmup la 



the v .iinall. i >lu. i. 



OWIerti>n.-E. O. Uln 



l'l:i'Tn\V\KTIII V I'l ANM|"r|;,ATA, W. Sp. (Hindi.) 



uaa i ins. n-a. 



i >f tlii- form we have six specimens. These show that it is of the type of P. 

 /ninisti-int'i, perhaps it should be called a variety of that species, differing in 

 having the tlattfniiiL' <>! the back of the last volution much more decided, while the 



nil rnl^' i- wanting entirely, at any rate it is so for the outer volution. The 



donon of the, volutions seems to be rather narrowly rounded. The surface 

 kings are essentially the same in the two forms, as is also the form of the 



aptM-tun- ami the dimensions, the largest specimen being about 24 mm. in hight. 

 The broad dorsal flattening will distinguish /'. plitnotlorxnta at once from all 



other -i-f.-if- of the genu> ami family known. 



formation and locality. Utlca group, CtivifitMmi, K.-ntuckjr. 

 CbibctiM.-E.O. Uln.-h. 



I'KOTOWAKTIIIA PKRVOLPTA, n. *p. 



I'l.ATK LXIII ST. 



This also may be only a variety of /'. granistrinfii, but it is one well worthy of a 

 name. It is almost constantly smaller, the hight in the majority of the 

 specimens being less than 15 mm., and in only one out of over fifty is it 20 mm. 

 < 'omparing the two forms we find that /'. penoluta is more closely inrolled, giving a 

 more globose form. The aperture also is relatively wider and the umbilical callosity 

 has a t-olumel la-like twist that is not seen in P. granistriata. The volutions further 

 are nearly uniformly rounded dorsally and never show anything either of a central 

 ridge or a flattening. Though some of the specimens before us are tolerably well 

 preservc.l. none of them exhibit any - it i-f irtory evidences of external markings 

 save the granostriate marking of the inner volution. This is more extensive, but in 

 other respects essentially ;us in the two preceding species. Here and there a small 

 patch of the external layer is retained and these sometimes exhil.it taint traces of 

 exceedingly delicate transverse and revolving lines. 



Formation and toealiig. In K.-niiirky this specie* occu'nln the Klark Klvi-r uroup anil in ih.- lowest 

 bed (Orthlt or Modlolodon b^li ..f tin- Tr.-nt<m irrmip. In Minnesota cast* of tin int. rii.r an- not un-<.ni- 

 mon la the Rhlaidlrtjrm and <.- .|.,eita beds of the Klack il and Mlooeapollt. 



TMllri>n>us eumplea arc rmr furth.-r ir Catimm Fa IN .in. I .1! Chattl.-id th.-y ar.- 



aluindant. 



Colltctiont.-} h; W. H. Scofleld. 



