216 THE CHICAGO ACADEMY OF SCIENCES. 
group of Lymnzas has been so recently differentiated that generali- 
zations may well be reserved until a future time, when more definite 
information is available concerning the distribution of the different 
races. 
RECORDS. 
UNITED STATES. 
ALABAMA: Boligee, Greene Co. (Hinkley). 
ARIZONA: Salt River at Tempe, Maricopa Co. (Ashmun). 
CALIFORNIA: Bardsdale, Ventura Co. (S. S. Berry); Warner, San Diego 
Co. (F. W. Bryant) ; Los Angeles Co. (Mrs. A. E. Brush) ; Morena, San Diego 
Co. (Cass); Bixby, Los Angeles Co.; Baird’s Lake, Ventura Co. (Hannibal) ; 
pond about artesian well, ten miles north of Ontario, San Bernardino, Cal. (Hen- 
derson). 
Cotorapo: La Junta, Otero Co. (G. S. Dodds; Henderson). 
Missourrt: St. Louis, St. Louis Co. (G. D. Linol). 
Kansas: Verdigris River, Greenwood Co. (Lea); Topeka, Shawnee Co. 
(Stearns) ; Nickerson, Reno Co.; Lawrence, Douglas Co.; Manhattan, Riley Co.; 
Arkalon, Seward Co. (Hanna). 
LoutstANA: Grand Cane, De Soto Co. (Vaughan). 
New Mexico: Albuquerque, Bernalillo Co. (Ashmun); McCartys, Val- 
lencia Co. (Ashmun; Walker); Rio Grande, Paraje, Socoro Co.; Rio Grande, 
Mesilla, Donna Ana Co. (Cockerell). 
OKLAHOMA: Oklahoma City, Oklahoma Co. (Ferriss) ; Cache Creek, S. W. 
Oklahoma; Tonkawa, Kay Co. (Isley) ; Woodward, Woodward Co. (Vaughan). 
Texas: Dallas, Dallas Co. (E. Hall); Greenville, Hunt Co. (Hanna) ; 
Houston, Harris Co.; Dallas, Dallas Co. (Hemphill) ; Rockwall Co. (Ferriss) ; 
San Marcos, Hays Co. (Pilsbry and Ferriss) ; San Antonio, Bexar Co.; Houston, 
Harris Co. (Pilsbry) ; Royse, Rockwall Co. (G. H. Ragsdale); Fort Worth, 
Tarrant Co. (Sampson; Walker); Sabine River, Hunt Co.; Brazos River, Fort 
Bend Co.; Colorado River and tributaries, Travis Co.; mouth of Nueces River, 
Nueces Co. (Singley) ; Rio Grande, near El Paso, El] Paso Co.; Bouldin Creek, 
Travis Co.; New Braunfels, Comal Co.; Cala Creek, Throckmorton Co.; Jack- 
son Co. (Smith. Coll.) ; McLennan Co. (Strecker) ; Western Texas (Walker). 
MEXICO. 
Lower CALirornIA: Near San Diego Co., Cal. (Orcutt). 
GEOLOGICAL RANGE: Not recorded. 
Ecorocy: No definite records have been seen regarding the 
ecology of this variety. It probably inhabits to a large extent the 
intermittent streams of the great plains, which are dry for a great 
part of the year, compelling the Lymnzeas to hibernate. See note under 
variety cockerelli. 
Remarks: Techella may be known by its acutely conic spire, 
obese body whorl, broadly dilated and flattened inner lip and wide and 
deep umbilical chink. Cubensis has a narrower, more triangular and 
less broadly reficcted inner lip and a narrower umbilical chink. The 
