102 



subverticalis , angulato-ovalis; perist. duplex: internum vix 

 expansum, externum patens, superne et latere sinistro dila- 

 tatum. Long. 18 — 19, diam. 7 — 8 mill. Ap. 5-^6 mill. 

 longa. — Legitur subfossile in La Grange prope Frederik- 

 sted insulae St. Croix. (Taf. IV. F. 2, 3.) 



4. Cyclostuma chordiferum Pfr, — T. angustissime per- 

 forata, oblongo-turrita, truncata, spiraliter obsolete lirata et 

 confertissime chordato-costulata, decolorata; spira subregü- 

 lariter attenuata; sutura confertim denticulata; anfr. superst. 

 41/2, parum convexi, ultimus antice breviter solutus, basi 

 liris 6 — 7 elevatioribus munitus; apertura angulato - ovalis ; 

 perist. duplex : internum expansum, vix prominulum, exter- 

 num undique subaequaliter patens. — Long. 19 — 23, diam. 

 8 — 91/2 mill. Ap. 52/3 — 7 mill longa* — Legitur subfossile 

 in „Bülows Minde" insulae St. Croix. (Taf. IV. F. 1.) 



5. CyUndrella chordata (Tracheäa) Ffr. — T. vix 

 rimata, cylindraceo - turrita , truncata, tenera, subtilissime 

 striata et costulis chordaeformibus , subdistantibus munita, 

 albida; sutura costis excurrentibus crenata; anfr. superst. 

 11 — 12 vix convexiusculi , ultimus antice solutus, breviter 

 descendens, latere dextro angulatus, basi acute carinatus: 

 carina filiformi, crenata; apertura obliqua, subtetragono- 

 rotunda; perist. album, continuum, undique breviter expan- 

 sum. - Long. 10, diam. 21/2 mill- Ap. c. perist. I2/3 

 mill. longa et lata. — Hab. „Bülows Minde'^ prope Chri- 

 stiansted insulae St. Croix. (Taf. V. F. 10, 11.) 



6. Papa fallax Say. 



7. Pupa pellackla Vfr, (servUls Goidd.) 



8. Papa rtulis Pfr. — T. profunde rimata, ovato- 

 oblonga, costis obtusis, leviter arcuatis, subconfertis sculpta, 

 cretacea; spira convexiusculo-elongata, sensim in conum 

 obtusulum attenuata; anfr. 11 vix convexiusculi, ultimus 

 V* longitudinis paulo superans, antice subascendens, juxta 

 rimam subcompressus ; apertura lunato-rotundata, dente pro- 

 fundo, compresso parietali et minore, profundiore columel- 



