LIOTIA. 157 



interstitiis prope marginem inferiorem profmide foveolatis ; 

 Timbilico parvo.— A union of the pitted and the varicose 

 sculpture. 



19. DEPKESSA, f. 27, Kiener. — Subquadratim angulata, 

 superne planata, seriatim puncturata ; varicibus nodosis 

 superne angulatis, umbilico majusculo; apertura extus 

 lobata. — Strongly augulated at the upper part of the whorls 

 by the depression of the spire. 



20. siDEREA, f. 17, Reeve. — Depresso-angulata, costis con- 

 centricis ad marginem nodosis et carinis spiralibus cancel- 

 lata ; apertura rotunda, margine crasso crenato. — A depressed 

 species with broad cancellations. 



21. CANCELLATA, f. 15, Kiener.— J) epv 6 ssQ, discoidea, anfrac- 

 tibus angustis nodoso cancellatis ; umbilico latissimo ; apertura 

 polygonal!. — More depressed than the preceding and more 

 closely cancellated. 



22. CRENATA, f. 21, Kiener. — Depresso-subconica, punctu- 

 rata ; anfractibus angulatis, ad angulum bicarinatis ; carinis 

 angulatim crenatis ; apertura rotunda, margine incrassato, 

 lobato. — Remarkable for the double keel on tlie circumference 

 of the whorls, and for the thickened and nodose character of 

 the margin of the aperture. 



23. DISCOIDEA, f. 26, Reeve. — Depressa discoidea, tenuiter 

 spiraliter lirata ad angulum carina duplicata, foveolata 

 cincta ; margine aperturse crassa nodosa. — The double keel is 

 divided into pits by cross septa. 



24. CLATHEATA, f. 16, Reeve. — Compressa, ultimo anfractu 

 rotundo, aequaliter liris conceutricis sequalibus cancellato ; 

 apertura rotunda, margine crasso, laciniato ; umbilico magno. 

 — The narrow rounded last whorl is cancellated finely. 



25. coBiJENSis, f. 22, Reeve. — Quam L. clathrata magis 

 rotunda ; magis rude cancellata, margine apertura baud tan- 

 tum incrassata. — JMore globose and more widely latticed than 

 the preceding. 



26. FENESTRATA, f. 23, Carpenter? — Minuta, subglobosa 

 equaliter liris spiralibus et septis conceutricis cancellata ; 

 foveolis profundis. — More deeply and not so finely latticed 

 as L. clathrata ; less globose than L. cobijensis. 



