105 



1487 Pupa californica Rowell. 



"From San Francisco. Several hundred examples of the well 

 known form everywhere in collections. It may be regarded as 

 typical, yet is somewhat variable in itself, as to shape of the shell 

 and number and size of the lamellae; many specimens are more 

 or less oblong or obovate, while the majority are rather cylin- 

 drical; in some, the superior palatal lamella is very small and 

 in a few even entirely wanting, while the apertural, columellar 

 and inferior palatal seem to be constant, the first and last of them 

 generally well formed, while the columellar may be small. In 

 one specimen I saw a tiny but distinct supra-apertural, and in 

 very many there is a small-nodule-like supra-apertural, close to 

 the middle of the (outer side of the) apertural. So far I had 

 thought this latter to be a special, distinguishing character of P. 

 Rowelli Newc." — Sterki. 



1488 Variety elongata. San Clemente Island. 



"A little smaller and generally more cylindrical than the type; 

 a part are even long cylindrical, having the appearance of an 

 Isthmia. The coloration is somewhat paler, and the lamellae are 

 well-formed — elongata. Among the more than 100 specimens 

 there were 5 different from the balance, and ranging with the 

 following form." — Sterki. 



1489 Variety catalinaria. Santa Catalina Island. 



"All the examples (about 200) are of quite a peculiar form: 

 small, rather short, pale horn colored; shell thin, delicate; rib- 

 like striae less numerous and relatively larger; the whorls are 

 less high, which gives the shell a different appearance. All la- 

 mellae are present and well-formed, specially the apertural. The 

 shell is nearly exactly of the size and shape of Vertigo bollesiana 

 Morse, from New York or Ohio, and also the lamellae are much 

 alike. One peculiarity is that in about one-third of the examples 

 a part of the shell is wanting, always on the side of the aperture, 

 so that 3 or even 4 whorls are opened. This can hardly be acci- 

 dental, and probably that part of the thin shell is worn off by 

 friction in moving." — Sterki. 



1490 Variety trinotata. Monterey, Cal. 



"In size not much different from the type, yet a little smaller, 

 and more generally obovate; the striae are less coarse; the per- 

 istome is slightly but distinctly expanded. There is no superior 

 palatial lamella, and the 3 present ones are small, the columellar 

 even a trace or wanting entirely." — Sterki. 



1491 Variety Diegoensis. San Diego, Cal. 



"The diminution of the lamellae is going on; none but the 

 apertural is left In this variety — diegoesis — and that even is quite 

 small or a mere tiace. In size and shape, the examples are not 

 much different from the Monterey form, which is an intermediate 

 one." — Sterki. 



This form I first found growing on Roccella tinctoria, near San 

 Quintin bay, Baja California, and distinguished as Pupa orcutti 

 (Pilsbry, ined.). Later, I found it near Ensenada, on Todos San- 

 tos bay, Baja Cal., and near San Diego, Cal. — in both places on 

 plants of Mesembrianthemum aequilaterale. — Orcutt. 



1492 Variety cyclops. Rocklin, Placer, Co., Cal. 



"Large, conic or ovate conic, or turriculate, umbilicated, rib-like 

 striae rather strong; whorls 5, well rounded, with deep suture, the 



