PATAGONIAN EXPEDITIONS 1 ZOOLOGY. 



EXPLANATION OF PLATE XLII. 



PAGE 



Figs, i, i a, \b. RADIODISCUS PATAGONICUS (Suter). On the Rio Chico, 



50 miles above the Sierra Oveja . . . . 517 

 Figs. 2, 3. SUCCINEA BURMEISTERI Doering. Rio Chico, 50 miles 



above the Sierra Oveja . 520 

 Figs. 4-6. " " Doering. Seven miles above 



the Sierra Ventana . . 520 



FigS. 7, 7#, 8. LlTTORIDINA HATCHERI Pils. 553 



Figs. 9, 10. LITTORIDINA SIMPLEX Pils. Cotypes .... 555 



Figs, ii, na, 12, 13. LITTORIDINA HATCHERI Pils. 40 miles above Sierra 



Oveja 555 



(VOL. in) 



