PILSBRY: NON-MARINE MOLLUSCA OF PATAGONIA. 609 



Near the Mount of Observation (below the mouth of Santa Cruz River). 

 This species is chiefly distinguished by its cardinal teeth, which differ 

 constantly from those of the other Patagonian Pisidia. 



FIG. 19. 



Pisidium observations . Interior ot right and left valves. 



Family MUTELID^E. 

 Genus ANODONTITES Bruguiere. 



Anodontites Brug., Journ. d'Hist. Nat. Paris, I, 1792, p. 131 (for A. cris- 



patus Brug.). 

 Patnlaria Swainson, Malacology, 1840, pp. 287, 381 (for P. ovata Swains. 



= tmpesialis Lam. and P. rotundatus Swains. = ? Anodonta wood- 



iana Lea). 

 Glabaris Gray, Proc. Zool. Soc. Lond., 1847, P- J 97 (f r Anodonta 



Glabaris Simpson, Synopsis of the Naiades, p. 916. 



Patnlaria Dall, Nautilus, XX, 1906, p. 39 (type/ 3 , ovata Swains, implied). 



ANODONTITES PUELCHANUS (d'Orbigny). 



Anodonta puelchana d'Orb., Mag. de Zool., 1835, p. 40; Voy. dans 1'Amer. 

 Merid., Moll., p. 620, pi. 79, figs. 7-9. Doering, Informe Oficial de la 

 Comision Cientifica de la Expeditional Rio Negro (Patagonia), 1881, 

 Zoologia, p. 74. 



