ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 625 
Pan. | La | Aca- 
Cat. |Paz. pul. 
A 
A 
36| P 
?33| P| A 
P 
iP 
PC 
39 A 
C 
A 
34) P| A 
A 
76| P| A 
P\A 
69} P| A 
JBN 
Bi -P' C 
P 
74 
107 A 
89 | P\A 
94 A 
86| P| A 
A 
90 | P 
A 
P 
P 
55 Cc 
45|P\A 
Maz. | Other 
Cat. oman 
?WI 
606 |E. Mar. 
608) Gal. 
603 |G.Mar. 
E 
605 
Gal. 
611 
Gal. 
613) WI 
615| E 
617| E 
Gal. 
E 
E 
EK 
624 |L. Mar. 
632 
| 
No. 
312 
313 | 
List of Cape St. Lucas Shells. 
Volvarina varia. Rare. [Cannot be distinguished 
from some W. I. specimens. ] 
Persicula imbricata. 1sp. [Can scarcely be sepa- 
rated from interrupta, jun. Also Guacomayo. | 
4! Persicula phrygia. Rare. [Closely allied to fru- 
mentum. Differs from the W. I. sagittata by 
having the painting in loops instead of zigzag, 
and an orange callosity over the sunken spire, 
bordered by a spotted sutural line. | 
Oliva porphyria. 1sp. 
Oliva Melchersi, var. Rare. | 
Oliva subangulata. Very common, dead. {This 
ier very rare elsewhere, is known by the! 
shouldered shape, toothed paries, and violet- 
stained mouth and columella. | 
| Olivella dama. Rare; dead. 
Olivella tergina. Rare; dead. 
Olivella undatella. 5 sp.; dead. 
Olivella zonalis. Rare; dead. 
Olivella v. aureocincta, 3 sp.; dead. 
Olivella anazora. Very rare; dead. Perhaps a var. 0 
Olivella gracilis. Extremely abundant. [With 
many varieties: among which is one with dark 
median and sutural bands and light spire ; an- 
other with dark spire; another pure white, o 
which the young is znconspicua, C.B. Ad. The 
Acapulean varieties are somewhat different. ] 
Harpa crenata. _ Dead. 
Purpura biserialis. Abundant. 
Purpura triserialis, Common. 
Purpura triangularis. Not uncommon. 
Purpura patula. Common. Also West Indies. 
Purpura muricata, Rare; dead at C. 8, L.; living; 
at Socorro Island. 
Purpura planospira. Dead shells at C. 8. L. and 
La Paz; abundant and fine at Socorro Island, 
Rhizocheilus nux+tall var. [= Californicus. ] 
Sistrum carbonarium. Living ; plentiful. 
Vitidella cribraria. Abundant. 
Columbella major. Rare. 
Columbella fuscata. _Abundant. 
Columbella festiva. Not rare. 
Columbella hemastoma. Not rare. 
Columbella solidula. Abundant *. 
Columella Reevet [= Sta. Barbarensis, Cpr. (error) }. 
Columella baccata. Rare. 
Conella cedonulli. 1 sp. 
Nassa tegula. Rare; pale var. 
Nassa versicolor. Rare; dead. 
Nassa corpulenta. Very rare. 
* The young shell is thin, semitransparent, with Alaboid tuberous vertex. The nuclear 
part is rather more tumid than the next whirl, and set slanting as in some Chrysodomi. 
Adolescent, whirls smooth, except a suturalline. Sculpture of adult gradually developed, 
with spiral lines, sometimes all over, sometimes only anteriorly and posteriorly. Last 
whirl sometimes with blunt radiating riblets, but generally smooth. Siphonal notch deeply 
cut back, as in Strombina, to which the species may belong. 
1 
25s 
