276 



Bulletin 39 



448 



i%ATi5 9- (!2) 



Page 



Fig. r. Melongena censors Sowerby, Old Man Sam Creek, height 



118 mm 112 



2. Phos Veatchi, n, sp,, Hill la, Banana River, height 43 mm.. 121 



3. Phos Veatchi, n. sp., Hill ra, Banana River, height 41 mm.. 121 

 4-5. Phos gatunensis Toula, Gatan. height 30 mm 117 



6. Phos beteyensis, n. sp., Rio Betey, height 26 mm 122 



7. Northia northiae Gray, variet}' miocenica, n.var., tip. Banana 



River 124 



8-9. Phos Moorei Guppy, variety costaricensis, n. var., Banana 



Pviver, height 26 mm 118 



lo. Phos mexicanus Bose, Water Cay, height 29 mm 117 



I r. Phos mexicanus Bose. Water Cay, height 27.5 mm. 



12. Phos elegans Gupp3% variety liraonensis, n. var., Port Limon 



length 27 mm 119 



13. Phos elegans Guppy, variety limonensis, n. var., Port Limon 



length 22.50 mm 



14. Xorthia northite Gray, variety miocenica, n. var., Banana 



River 124 



15. Phos snbsemicostata Brown and Pilsbry, Saur}^ Creek, height 



32 mm 121 



16. Phos metuloides Dall, Mt. Hope, height 19.5 mm 122 



17. Phos estrellensis, n. sp., Kstrella River, height 19 mm 120 



18. Phos estrellensis, n. sp. , Estrella River, height 16 mm. 



19. Alectrion merenda, n. sp. , Old Man Sam Creek, height 7 mm 124 



20. x\lectrion ranuncula, n. sp., Banana River, height 14 mm 123 



21. Alectrion losquemadica Maury, Port Limon, height 11.50 mm 123 



22. Alectrion ranuncula, n. sp. , Banana River, height 14 mm 123 



PIRATE 10 (13) 



Fig. I. Marginella latissima, variety Pilsbryi, n. var., Banana R. 96 



2. Marginella latissima, variety Pilisbryi, n. var., Gatun 



3-4. Clava costaricana, n. sp., Banana River, height 40 mm 144 



5. Metula Harrisi, variety limonensis, n. var.. Port Limon, 



heigh. 27 mm 116 



6. Metula Harrisi, variety limonensis, n. var., Port Limon, 



height 25 mm 116 



7. Strombina matima, n. sp.. Banana River, height 12 mm 127 



