30 
LORQUINIA 
result in mortification of the segregated member of the body. 
The outfit for the potassium permanganate treatment should in- 
clude the following: 
1 small scalpel of best steel, 
1 all-metal hypodermic with needles, 
1 bottle potassium permanganate tablets for syringe, 
1 bottle strychnine sulfate tablets for syringe, 
1 bottle distilled water, 
1 piece of cotton goods of firm weave, two inches by thirty 
inches, for ligature, 
1 roller bandage, two inches by ten yards. 
These can all be packed in a small leather case for carrying. If 
you carry the case through life and never use it, you are fortunate, 
and charge the expense to insurance. If you have to use it on your- 
self or anyone else, you will never regret the labor of carrying the 
load. 
Richard Davis. 
FOSSIL CHITONS 
During the past five years Dr. F. C. Clark has been digging in 
the Pliocene and Pleistocene deposits of the Santa Monica Hills. 
Needless to say he has accumulated much interesting material, in- 
cluding the minute Foraminifera and Bryozoa, and many different 
forms of GastrnDoda and Pelecyooda. He has recently loaned me a 
fine lot of Chiton valves from the P^leistocene deposits, and among 
them I have identified the following: 
Ischnochiton acrior, Cpr. Two anterior valves, two posterior 
valves, two median valves. This species is now confined to the Pan- 
amaic fauna. 
Ischnochiton ccnspicuus, Cpr. The largest and showiest ot the 
recent local chitons. One small anterior and one small posterior valve 
are provisionally referred to this soecies. 
Ischnochiton clathratus, Rve. Several median valves. 
Callistochiton crassicostatus, Pils. One posterior valve, a num- 
ber of anterior and median valves. 
C. palmulatus Cpr. and var. miirabilis, Pils. More than sixty 
anterior valves, as many posterior, and nine median valves, besides 
many worn median valves that may perhaps belong here. 
Trachydermon dentiens, Gld. Two anterior valves, one pos- 
terior valve. 
Mopaliidae. Five anterior valves and two median valves be- 
longing to this family were found, but as the separation of the dif- 
ferent groups of this family depends largely on mantle characters no 
more definite identification has been attempted. 
