FE IG Ay AN 1B) DK WA IUIE, 
SuBPULCHELLIA, NICKLESIA, PULCHELLIA, KNEMICERAS, PROTENGONOCERAS. 
Bressil=5sysuonulchellvaxcastellanensis) bliy cits pae ee eee tee eae 
Figs. 1, 2. With shell complete on side of fig. 1. 
3, 4. Same fossil, shell partly taken off. Right side of fig. 3 shows length of 
living chamber about one-half of last volution. 
5. Lateral suture of fig. 3, X 3. 
All natural size except fig. 5. 
Castellanes, France; Neocomian; Coll. Mus. Comp. Zool., Cambridge. 
ley GA Nel Masel clonprensaonxe) (CPO oneII/)) see os casos aengs cose noooco senesced soeoeeseoouses 
Figs. 6, 7. Natural size. 
8. Lateral suture, x 3. 
Locality and collection same as last. 
TG Se) O— lew BUlCelltancomipressiss ure cim (cls ©),\a) ee rasy) aes ee eee ee 
Figs. 9-11. Natural size. 
12. Suture after Nicklés, Pal. sud-est de l’ Espagne, pl. 3, fig. 1b, 5. 
Locality and collection the same. 
Fires, 13-15) ‘Knemiceras attenuatum) (Elyaitt) sss. - esses see ee enters] seen see Aue Anant 
Figs. 13, 14. Natural size; shows living chamber nearly three-fourths of a volution. 
15. Suture, X 2. 
Celendin, Peru; Cenomanian? 
HGS G—20 seroteng Onocendsy GO Om CE.0 Lim) ese ets ae 
Fig. 16. Shows living chamber to have one-half a volution in length. Shell is 
preserved on the living chamber. 
17. Section shows the concave venter with lateral ridges at an early stage. 
18. Ventral view of same. 
19. Septum of same, 2. 
All natural size except the last, and all in Coll. Mus. Comp. Zool., 
Cambridge. 
20. Specimen in Coll. Acad. Nat. Sci. Phila. Showing living chamber one-half 
of a volution, part of aperture on right side, and old-age folds. 
Arivechi, Sonora, Mexico. 
139 
142 
151 
