"eae N Beis. 
VOL. IX. OCTOBER, 1895. No. 6 
ON THE AUSTRALASIAN GUNDLACHIA| 
BY C. HEDLEY, F.LS., 
With note on American forms 
BY H. A. PILSBRY. 
The eccentric shell of Gundlachia, one part shaped like a knife- 
sheath, or rather a spectacle-case, plastered askew upon another 
part like the shell of an ordinary fresh-water limpet, the creature’s 
external likeness and internal unlikeness to Ancylus, and the re- 
markable, discontinuous, geographical distribution of the genus, 
combine to tempt a naturalist’s curiosity. For a chance to satisfy 
such curiosity I am indebted to several friends who have liberally 
assisted me with all the material and information at their command, 
and without whose kindly aid I should have had to relinquish, un- 
profited, the study of the subject. Prof. Tate has kindly loaned me 
the actual types of G. petterdi, and given me examples of that 
species collected by himself at Mt. Lofty near Adelaide, S. Aus- 
tralia. Mr. W. F. Petterd has liberally communicated a large 
series of Gundlachia, including the actual type of his species G. 
beddomei. Mr. C. E. Beddome has supplied me with a collection 
of Gundlachia from various localities. Mr. H. Suter has convinced 
1 From Vol. VIII (Series 2nd) of the ‘‘ Proceedings of the Linnean Society 
of New South Wales” (November 29th, 1893). We have omitted Mr. Hed- 
ley’s descriptions of the Australian species of Gundlachia and his plate illus- 
trating them.—ED. 
