410 MAZATLAN UNIVALVES 



Panama, 1 sp. C. B. Adams. PMazatlan ; 1 young sp.^ 

 off Chama ; L'pool Col. 

 Tablet 1951 contains the specimen. 



GENUS ODOSTOMIA, Flem. 



Edinb. Encycl.*m3, p. 130. 



Jaminea, Brown, Couth. &c. 



Odontostomia, Phil, in Zeit.f. Hal. 1849, p. 28. 



Odontostoma, Phil. Handb. Conch, p. 192 : nonZ>'Or&.; nee 



Odontostomus, Beck. 



For convenience' sake, the genus is here restricted to the 

 smooth species ; the sculptured forms being located under 

 Parthenia ; and the pupiform species under Chrysallida. All 

 the divisions in this family must be regarded as provisional, 

 till we know more of the forms from different seas. Some of 

 the following species differ from the typical forms in having 

 the peritreme continuous. 



SECTION A. Peritreme not continuous. 



487. ODOSTOMIA SUBLIKULATA, n. s. 



O. t. ovoided) suboblongd, subdiaphand, albd ; anfr. nucleosis 

 declivibus, in truncatione latiore celatis ; anfr. iv. normalibus^ 

 xubrotundatis, suturis distinctis, basi elongatd, hand umbilicatd; 

 in spird, Icevi ; infra peripheriam lirulatd, lirulis subobsoletis, 

 rotundatis, interstitiis parvis ; aperturd ovatd, labro acuto ; 

 peritremati circa basin usque ad parieteni continuo ; labio in 

 pariete nullo ; plied transversd, obtusiore, conspicud. 



One beautifully perfect specimen was found of this^ elegantly 

 formed species, agreeing with the typical forms in not having 

 any parietal lip. Long. '078, long. spir. '038, lat. "042, div.28*. 

 Hob. Mazatlan ; 1 sp. off Spondylus ; L'pool Col. 



Tablet 1952 contains the specimen. 



488. ODOSTOMIA -- , sp. ind. 



Tablet 1953 contains a portion of a specimen larger than 

 O. sublirulata, with the whirls plan ate, and with very fine 

 distant indented striae over the whole surface. 



Hob. Mazatlan ; 1 sp. off Spondylus ; L'pool Col. 



