1296 General Notes. [Decem shies 
spicules, &c., of American sponges, are’ shown in the following 
cut: 
Expchhati ION OF Foti 
The accompanying figures are drawn from nature by the aid of the amer lucid 
and represent the relative sizes and shapes of /ike parts of severa al sponge 
statosphere is magnified 3 p cing the spicules of the skeleton, marked a, 150 times, 
all other figures 225 tim 
. Carterius POPE tide tis of statosphere. (In the other genera these ca 
bis sence we 4, dermal or flesh spicule; æ, birotulate spicule of outer í 
of t 
Parmu wia Bate skeleton ma a parmuliform spicule of statosphere. 
2. : 
3- Spong: ontan , Skeleton spic ; 
4. y Pt diese Suviatilis— —ő, Skel spic ene d, biroi stat. spic. and - of rotule. 
5. Tubella Pennsylvanica—a, skel. spic. ; ie inequibirotulate spic. wT 
and disk. 
6. Mois aieea skel. spic. ; æd, birotulate r spic. and disk, 
7. Uruguaya corallioides—a, skel. spic 
8. Spongilla lacustrivides—b, dermal spic. ; ; ¢, Stat, eit 
9. 
11. Meyenia atl rie Ce birot. stat. spic. 
ad veretti birot. stat. s wer 
13. Heteromeyenia ar, ayrosperma—e. long, f, short, birot. stat. spic. 
14. LHeteromeyenia Ryderi—e, long, f, short, birot. stat. spic. 
—Edward Potts, 228 S. Third street, . z 
a new H ‘ 
PYRGULA NeVADENsIS!—This is the name given takes in the 
drobiinoid mollusk inhabiting Pape and Walker's 
Sierra Nevada mountains, by the author. the , 
The species of Pyrgula Kertoi described, are me a 
helvetica from Switzerland; P. bicarinata, France ; 
from the Pyrenees, and P. andicola from the m 
steropod from the mounts! 
Sierra Nevada, va ae abcd species Ga the = moat 
ssid reg e n, by Robert E, C. Stearns, in . Phil. Acad, Nat. ROT 
71-17 
