PILSBRY: NON-MARINE MOLLUSCA OF PATAGONIA. 519 



Family ZONITID^E. 



The small land snails originally described as Helix saxatilis Gld. and 

 H. ordinaria Smith have all the external characters of the Hyalinia group 

 of Zonitidce. H. saxatilis has pedal grooves and a mucous pore at the 

 tail. Mabille and Rochebrune have proposed for it the generic term 

 Payenia. What status this group will ultimately be given depends wholly 

 upon the internal anatomy, of which we know nothing. It may possibly 

 belong to the Endodontidce. 

 PAYENIA SAXATILIS (Gld.), U. S. Expl. Exped., Mollusca, p. 42, pi. 3, f. 



33. Orange Harbor, under dry stones. 



PAYENIA ORDINARIA (E. A. Smith), P. Z. S., 1881, p. 36, pi. 4, f. 16, i6a. 

 Tom Bay, on the west coast, attached to the frond of a fern. 



Family LIMACIDA2. 



Except as introduced animals, Limacidce are unknown in South America. 

 A species of Limax (probably the European Agriolimax Icevis or A. 

 agrestis] has been reported from the Falkland Islands and from Ushuaia, 

 Tierra del Fuego (Strebel, Wissenschaftliche Ergebnisse der schwedischen 

 Slid Polar-Expedition, die Gastropoden, p. 7, 1908). 



Agriolimax teems under the name Agriolimax argentinus Strobel has 

 attained a rather wide distribution in temperate South America. Doering 

 reports it from the Rio Colorado, Rio Negro, and Sierra de C6rdoba. 



Family SUCCINEIDA1. 



SUCCINEA Drap. 

 SUCCINEA PATAGONICA E. A. Smith. 



S. patagonica Smith, P. Z. S., 1881, p. 37, pi. 4, f. 17, 17^; Proc. Malac. 



Soc. London, VI, 1905, p. 338. 



S. lebnmi Mabille et Rochebrune, Miss. Sci. Cap Horn, Moll., p. 14, pi. 6, 

 f. 4#, \b. 



The shell is rather ventricose, greenish-yellow, with the first whorl light 

 scarlet. Length 12.5 mm. Cockle Cove, shores of Trinidad Channel and 

 Puerto Bueno (Dr. Coppinger) ; Rio McClelland (Capt. Crawshay). 



S. lebnmi seems to differ only in the smaller size of the type specimens, 

 length 8-9 mm. - - a trivial distinction. It was taken at Punta Arenas 

 and Orange Bay. 



