1915.1 



NATURAX SCIENCES OF PHILADELPHIA. 



347 



Spring Canyon.' This is above the middle of the west side of the 

 range. The summit here projects as a limestone butte, bomided by 

 cliffs on the east, north and west sides. Access was gained to the top 

 on the south side. The flat summit is covered with grass, Fouquieria, 

 Cylindropuntia and other cacti, Agave, etc. No shells. There is a 

 fine outlook, the jagged Organ Mountains silhouetted eastward. 

 Around the base of this central summit we found Ashmunella walkeri 

 and Sonorella by digging in the soil among the rocks, where there was 

 shade. We found only seven species of snails in all. 



Sonorella hachitana flora n. subsp. Plate V, figs. 3 to 3c. 



Sonorella hachitana. . . . Florida Mountains, Pilsbry, Proc. A. N. S. 

 Phila., 1905, p. 257, PI. 17, figs. 1-6 (sheU), PI. 20, fig. 12 (genitalia), 

 PI. 23, fig. 20 (jaw). 



The shell is in the average larger than S. hachitana, with less dis- 

 tinct white borders along the shoulder band. Penis decidedly 



Fig. 6.-^A-E, Sonorella hachitana peloncillensis. A, genitalia; B, C, penis- 

 papilla and end of same, enlarged; D, E, penis-papilla, two other individuals. 

 F, G, S. h. flora, terminal ducts and penis-papiUa. 



This sprmg is not indicated on the U. S. G. S. Topographic Sheet (Deming 

 Quadrangle, edit, of Feb., 1899), and as our visit to these mountains was unfore- 

 seen, we did not have the map. From memory we would say this spring is 

 opposite Arco del Diablo of the map. INIr. Ferriss had made a flving visit to the 

 range a year earlier, collecting ferns and a few snails on the 'slope facing the 

 Little Floridas. * 



