ET 
ground near about was covered with 
a white efflorescence, tinged vi red 
and yellow. On the edge of small 
ond erystals of sal pantry 1 to 
inches long, were collected.”’ 
A e of ea reap a low 
Yuma bec full f 
da ai 
their Rarsstlany 9 
and that the ae halon . ea ee 
bectt shee here for nt 
the heal and a maae peri i 
the | tiiicin 
SOME DESERT FOSSILS. 
| AMNICOLA LONGI 
5 
arcuate; 
perforate. 
one-tenth 
= Gmbilical region nearly 
; ng th one-eighth, breadth 
inch. 
Livin ah.—Henry Hemph 
Quaternary: ae Grande, Palvredo 
Nevada basin, 
a2Q 
» & 
ES 
s 
yo 
ee 
® 
are numerous and 
of acha ik’'y whiteness, showing that they 
are all dead shells. 
Living: Dos Pal 
Desert, near Salton 
The most num 
mas spring, Colorado 
(Oreutt). 
gies be all the’ fossil 
n the ert, and though 
6 of the smallest apectan: its numbers 
t as to exceed the others in 
GNATHODON MENDICUS Goul 
ving: Colorado estuary to Masaitai. 
Me ie 
fs eatevnary: North of Paneer creek, 
Colorado Desert.—Le Con 
PHYSA HUMEROSA 
u Gl i 
Living: Colorado ig tat a vramid lake, 
Nevada; iy river, 
Quaterna ear "oe aorta Nevada 
‘Very ab ede the Colorado Desert 
in_a “semi-silicified’ condition. 
Virtually only a distorted form ie 
st 
Colorado Deser 
The West American Scientist. 
Bs 
PLANOSB MMON Gould. 
hell large, discoid, subconie, delicately 
nai op e broad ly 
reales expande d on ed 
five: eighths to one; dia 
“Ria math lake, Oregon. Honey 
lake, Lassen county, Calif. Nevada, Colo- 
ado 
aaa ce ieee: Cienega Grande, Colorado 
Desert.—T. H. Webb: W. P. Blake, La- 
hon Lassen county, California. 
fa Ire rounded oval. 
very small; diameter, ib; oe 5 mm 
Q aternary: Dry 1 ake, Colo o Des- 
er 
ANODONTA pbosms Hthinr jar Lea. 
A 
aac J 189, 256. 
Living: Bodega Bay Calif. to Baja 
California. Mazatlan 
Quaternary: Sa St B Ss 
Diego, Calif. Borrego springs, Colorado 
Desert ( (Oreutt). San Nicholas Island (S. 
Ripieairis CALIFORNICA Hind 
Hinds. Ann Nat — 11:255 (1843); Daal 
Sulphur 12; t2, f 4, 
Keep, West coast hells, 44, 
Living: Monterey, if. to Sante Do- 
mingo, Baja California (Orcu 
Quaternar De. ’s Island, San 
Pedro,;.. Calf: —{s. ers). Borrego 
Bow 
springs, Colorado Desert ee utt). 
Ree tears ge RORUS ood. 
Pah come ta Barbara, Cane to Cape 
eas. 
= auatern nary: Santa ry rbara, 
San Quintin, Baja Cali ifornia. Borrego 
springs, “Color ado Desert (Orcu tes 
ai phe Cae ce 
Monterey, to Santo Do- 
Hobday “Baia California pete’ 
Quaterna San Diego, Calif, Borre- 
£0 springs, Colorado Desert (Orcutt). 
VENUS er eo se 
Living: Mo rey, “to Santo Do- 
mingo, Baja Calito ornia. n(Orcutt ae 
Quaternary: arbara alif. to 
— Quintin, Baja, “Calista” (Greutt). 
cvs Colorado Desert (Or- 
FIVELA CRASSATELLOIDES Con 
Living: Santa Crus, Calif: * Sante 
Domingo, Baja he ope (Oreutt). 
Quaternary: arbara, Calif. to 
n » Quintin, Baja California (Orcutt), 
ae Springs, Colorado Dese (Or- 
cu 
by Pedi TITAN. Conra 
ene: Carrizo jr Calif. ; 
artes HEERMANNI Contes i 
pea: Wi Carrizo creek, Cali 
OSTR VESPERTINA Conrad. 
| Ovate-s ae sprig lower aie plaited 
ribbed; hinge long and wide, Bue 
