822 THE AMERICAN NATURALIST. [VoL. XXXV. 
Season of the year has an important bearing upon collecting. 
Spring and early summer are the most favorable, probably 
because the water is quiet in the absence of the northern 
monsoon. June is generally stated to be the month in which 
MALABOYOC 
2 
+ CEBU 
GINATILAN 
SAMBUAN 
N. 9.30. 
Pr 
TANON 
DuMAGUETE 
PT 
SANDUGAN 
NEGROS 
Pr 
PASIGAJON 
SIQUIJOR 
E. 139.30| Merio. 
Sanj FERNANDO 
Fic. 2.— = map of the neighborhood of Bais, southern Negros, showing in stippled areas 
ome of the fishing grounds for Nautilus. (After Spanish coast chart.) 
the largest catches are made, as many as twenty shells. having 
been taken in a single basket. The least favorable season is 
winter, for the wind sweeps down the straits between Negros 
and Cebu, raising a sea which soon swamps the small prahus of 
