VOL. III. ] Lower Californian Shells. 19 
Amer. Jour. of Conchology, vol. ii, gives two others, all these in- 
tergrading. 
20. H. RowELLII Newcomb, 1865. ‘“ Arizona” Dr. Frick. 
This has lately been confirmed by specimens obtained near Phoenix 
(Pilsbry). A variety from near Mulejé, lat. 26° 52’, was described 
as a new species, ‘‘ 47. dohriz’’ Gabb. 
An intermediate locality has been recently discovered by Dr. S. 
Bowers in San Gorgonio Pass, near lat. 33° 40’, at the east base of 
the San Jacinto Mountains, eight miles south of Indio Station, 
and about the level of the former lake (or sea), among granitic 
rocks. There is a limestone bed a little higher up near which they 
may be found living. Like all found, so far, except Gabb’s var. 
Lohrit, they were dead shells, but retained the band, which was 
- faded out in Newcomb’s type, as described by him. For this reason,’ 
doubtless, their identity was not recognized by Gabb at first, and 
_ Dr. Yates also added'a synonym or variety in describing Dr. Bow- 
ers’ shell, as ‘‘ H. carpentert var. Jndioensis’’ in Nautilus, vol. iv, 
p. 63, 1890. It is also reported with some doubt from ‘‘ Guade- 
lupe Island, Dr. Palmer” (Binney), who got only young shells, 
while Bryant found only . carpenterz, but in perfect condition. 
21. H. (RUFOCINCTA?) FACTA Newcomb, 1864. Santa Barbara 
Island, lat. 33° 30’, and San Nicolas Island J. G. C. (types), the 
large forms from Catalina Island, lat. 33° 20’ ‘‘ Guadelupe Island, 
lat. 29°” Palmer, Dunn. Some of these are subangled and um- 
bilicate. Through A gaééz Newc., and some fossil forms, all are 
closely connected. 
22. H. STEARNSIANA Gabb, 1867. - El Rosario, lat. 29° 55’, to 
San Tomas, lat. 31° 35’, Gadd, on west slope only. Coronado Is- 
land, lat. 32° 25’, Hemphill.. Near San Diego, Orcuit. A connect* 
ing link between the typical HY. &el/e/ézz and those northward, con- 
sidered varieties of that species. Mr. Gabb’s most southern local- 
t 
ity seems to fix the southward range definitely. A 
23. H. TRASKII Newcomb, 1861, and var. CARPENTERI Newc., 
1861. Los Angeles, lat. 34°, (type) Zzask, to Point Conception, 
lat. 34° 25’, Yates, and San Diego, lat. 32° 40°, 7 G. CG The 
variety from Tulare Valley, lat. 36°, (type), to Coronados Island, 
Dunn, \at. 32° 25’, and Guadelupe Island, Bryant, lat. 29°: 
The “A. remondii* Gabb (not Tryon, 1863), scarcely differs 
