278 



Bulletin 39 



450 



Page 



Siliqnaria modesta Dall, variet}- limonensis, n. var. , Port 



Limon, slightly enlarged 147 



Sconsia cocleana, n. sp., Rio Coles, height mm 138 



Cyprasa cinerea Gmelin, Rio Blanco 140 



Cypraea almirantensis, n. sp., Water Cay, height 39 mm 140 



Cypraea parisimina, n. sp., Port Limon, height 39 mm 139 



Phalium moniliferum Guppy, Rio Betey, height 35 mm 135 



Sconsia bocasensis, n. sp., Bocas del Toro, height 35 mm 137 



Sconsia bocasensis, n. sp., Bocas del Toro. 



PLATE 13. 



161 



Fig, 1-2-3. Strombus pugiloides Guppy, Banana River 142 



4. Fasciolaria tulipa Linnaeus, variety Port Limon 105 



5-6. Strombus gatunensis Toula, Water Cay, somewhat reduced.. 141 



7. Polinices Stanislas-Meunieri Maury, Banana River, slightly 



reduced 157 



8. Natica Youngi Maury, variety cocleana, n. var., Codes 



Creek, slightl}- enlarged 155 



9. Natica canrena Linnaeus, Gatun 155 



io-ri-i2. Architectonica granulata Lamarck, Banana River 154 



i3-i4-i5. Natica Guppyana Toula, Banana River 156 



16-17. Polinices subclausa Sowerby, Banana River 157 



PLATE 14. (17) 



Fig. 1. Turritella oreodoxa, n. .sp., Banana River, height 49 mm 152 



2. Turritella exoleta Linnaeus, variety limonensis, Port Limon, 



height 43 mm 152 



3. Turritella exoleta Linnaeus, variety limonensis, n. var.. Port 



Limon, height 36 mm 



4. Turritella altilira Conrad, variety chiriquiensis, n. var., 



Banana River, height 52 mm 150 



5. Turritella mimetes Brown and Pilsbry, Gatun, height 72 mm 149 



6. Turritella altilira Conrad, Mt. Hope, typical, height 50 mm 150 



7. Turritella altilira Conrad, Gatun, typical, height 36 mm 149 



8. Turritella altilira Conrad, variety chiriquiensis, n. var.. Wat- 



er Cay, height 116 mm 150 



9. Turritella altilira Conrad, variety chiriquiensis, n. var. Ban- 



ana River, height 40 mm 150 



