DESCRIPTIONS OF INVERTEBRATE FOSSILS. 67 



Occurroice. — ^Tliis liaudsome little shell is t'ommou in the 

 Kiowa shales of Kiowa county, Kansas, especially in the lower 

 part of No. '6 and the upper part of No. 4 of the writer's 

 " Belvidere Section."' (See Nos. 9 and 11 of the Bulletin of 

 the Washburn College Laboratory of Natural History, and 

 American Geologist of January, 1891.) 



Some of the commonest of the many fossils associated with 

 it are Gryphwa pitcher i, Cardium kansaseuse, Cyprimeria 

 texana,* Tapes belviderensis, Turritella seriatim-granulata, 

 and Schloenbachia peruviana. 



The Anchura also occurs in the arenaceous platform of 

 shell-conglomerate forming No. 5 of the same section, the ex- 

 amples from this horizon, like the Turritelhr irom the same, 

 being larger and more coarsely ornamented than those from 

 Nos. 3 and 4. The flange of the wing also extends further 

 upward in specimens from No. 5, sometimes reaching to the 

 lower part of the second spire-whorl. 



The writer has also collected this fossil in the lower third 

 of the Kiowa shales in Clark county, Kansas, in a draw of 

 Blulf creek nearly opposite the mouth of Hackberry creek. 



The species is distinguished from Anchura ruida, White, 

 by the vertically costate body-whorl, by the shorter, differ- 

 ently directed falciform process, and by having the alar carina 

 confined strictly to the wing and nearly to the falciform 

 process, instead of being common to the wing and part of 

 the body- whorl. 



Nautilus washitanus, sp. nov. 



Shell large, compressed nearly as much as in Nautilus 

 neocomiensis, D'Orb., the size, form and ornamentation being 

 essentially as described by Shumard for his Nautilus texanus,'f 

 the siphuncle, however, placed between the middle and the 

 dorsal (outer) side of the septum and (sometimes, if not 

 always) nearer to the latter side than to the middle. 



Occurrence. — Common in the Washita limestone of Texas. 



* Cyprimeria gradata, Cragin, which will probably prove to be tlie same as 

 C texana. Roomer, when tlio liinge-dotails and form-variations of the latter shall bo 

 fully discovered. 



t Transactions of the St. Louis Academy of Science, I, 590. 



