DA COSTA : NEW LAND-SHELLS FROM CENTRAL AND S. AMERICA. 239 



An unnamed example of this species is in the Cuming Collection in 

 the .British Museum. The writer received a few specimens from the 

 Governor of the Province of Amazonas, through the instrumentality 

 of his friend Mr. Elster of Lima (since deceased), after whom the 

 species is named. The shells from which the type is selected vary 

 considerably in both form and coloration, and will be found to 

 resemble many of the species of Drymaus from Colombia, which 

 latter are generally, however, deeply umbilicated. 



5. Droleus subventricosus, n.sp. PL XXIV, Fig. 4. 



Testa acuminato-oblonga, umbilicata, tenuiuscula, albida, violaceo- 

 f usca ; anfr. 7, subventricosi, suturis impressis, longitudinaliter rude 

 elevato-striati ; apertura ovata, intus purpurascens, f longitudinis 

 superans; perist. acutum, parum reflexurn, albo marginatum; 

 columella leviter rehexa. Long. 30, diani. 14 mm.; apert. long. 13, 

 lat. 8 mm. 



Hab. — Bogota, Colombia. 



6. Drym^eus exoticus, n.sp. PI XXIV, Fig. 10. 



Testa ovato-conica, vix umbilicata, tenuiuscula, laevigata, nitida, 

 albida, violaceo-fusca, longitudinaliter strigata et maculata ; anfr. 6, 

 subventricosi, suturis impressis ; apertura amp] a, \ longitudinis sub- 

 sequans, intus violaceo-strigata ; perist. acutum et reflexurn ; columella 

 dilatata, reflexa. Long. 23 - 5, diam. 11mm.; apert. long. 11, lat. 

 7*5 mm. 



Hab. — The hot country, Upper Magdalena River, Colombia. 



7. Drym^tjs expansus, Pfr., var. Perenensis, n. var. PI. XXIV, Fig. 5. 

 Testa coinpresse umbilicata, ovato - pyramidata, costulis longi - 



tudinalibus confertis tecta, albida, fasciis sagittiformibus variegata ; 

 anfr. 6£, convexi, penultimus aliis tumidior ; columella torta, 

 recedens ; apert. ampla, inverse auriformis, intus lilacina ; perist. 

 album, expansum, et reflexurn, ad basim paulo-quadraturn. Long. 40, 

 lat. 23 mm. ; apert. long. 22, lat. 17 mm. 



Hab. — Perene, Peru. 



This variety, lately discovered by Mr. C. Codd at Perene, Peru, 

 differs in many respects from the typical D. expansus, Pfr., inasmuch 

 as it invariably has a less expanded lip, the body-whorl is less 

 ventricose, while the upper ones are much more swollen, the maculation 

 is also more pronounced and of a darker colour, while the umbilicus 

 is much more contracted and not so deep as in the type. 



8. Strophocheilus (Dryptus) indentatus, n.sp. PI. XXIV, Fig. 8. 

 Testa oblongo - ovata, imperforata, tenuiuscula, decussatim rude 



striata, et subtiliter indentata, roseo-fusca, strigis et maculis runs 

 ornata ; spira brevis, apice obtuso, roseo, transversim striato et 

 punctato granuloso, ad suturas sub-crenulata; anfr. 5, convexiusculi ; 

 columella rosea, fere erecta ; apertura ovata, longit. totius g paulo 

 superans, intus plumbea ; perist. breviter rerlexum, roseum, ad basim 

 cum columella angulum indistinctum formans. Long. 44, diam. 23mm. ; 

 apert. long. 24, lat. 13 mm. 



