220 THE CHICAGO ACADEMY OF SCIENCES. 
(Geo. H. Pepper); Las Vegas, San Miguel Co. (Miss Mary Cooper); Grant, 
Valencia Co. (Pilsbry) ; Albuquerque, Bernalillo Co. (Pilsbry and Ferriss). 
SoutH Daxota: Lake Herman, Lake Co. (P. C. Freeman) ; Date, Perkins 
Co. (Over). 
Texas: Sabine River, Greenville, Hunt Co. (Smith. Coll.) ; Rutterville, 
Fayette Co. (Lea). 
GEOLOGICAL RANGE: Charcoal zone of the Pleistocene of Arroyo 
Pecos, New Mexico (Cockerell). 
Ecotocy: In the Nautilus, Vol. X, p. 96, I find the following 
note: “Limnza bulimoides resisting drought—Specimens of a very 
short-spired form of this species were lately received from Mr. George 
H. Clapp, with the following note: ‘They were collected by my cousin, 
George H. Pepper, from a water-hole that appeared to be dry most 
of the year, near Farmington, New Mexico, on September 20, 1896, 
and reached me, packed in cotton, on October 5. On the 4th of this 
month (November) I dropped them into warm water to soak them 
loose from the cotton, and about two dozen out of 50 or more came 
to life. They had been out of water 45 days! The shells spend nearly 
as much time out of the water as in it, frequently crawling to the top 
of the glass in which I keep them.’ Out of 4 specimens sent alive, 
packed in dry cotton, one revived at once upon being placed in water, 
after an additional journey, dry, from the 6th to the 9th of November. 
The survivor has a translucent or almost water-colored body, closely 
peppered with opaque white; eyes black; tentacles opaque white; a 
dark stripe on back starting between tentacles. With the Lymnezeas 
were some of the little bivalve Phyllopod crustacean, Estheria me.xi- 
poma Claus” (H.7 Ac ePilsbrya) 
REMARKS: Cockerelli may be distinguished by its very globose 
form, short and very broad spire and by the wide expansion of the 
inner lip, which is not folded but broadly expanded, producing a large, 
deep umbilical chink. It is a very characteristic and usually an easily 
separable variety of bulimoidecs. Some specimens are narrower and 
higher in the spire than the types (especially in specimens from Ogal- 
lala, Neb. (pl. XXVIII, fig. 4), but all agree in having the open um- 
bilical chink, expanded columellar region and dome-shaped spire. The 
aperture varies somewhat in rotundity. It is probable that some of 
the references under bulimoides and adeline belong here, as both this 
form and techella have been recorded as bulimoides. Specimens from 
Ventura County, California, show a tendency to vary toward the te- 
chella form of shell, clearly showing that the cockerelli race is an 
offshoot of techella. (Compare plate XX VII, figures 33-35, with plate 
XXVIII, figures 6-7.) 
