Volume 46, Issue 2 (1948)
Southern California Academy of Sciences can be found at SCAS.
Notes on the Early Stages of Adelocephala heiligbrodti f. hubbardi Dyar
John Adams Comstock
A New and Remarkable Keyhole Urchin, Mellita notabilis n. sp.
Hubert Lyman Clark
Description of a New Species of Trophon from the Gulf of California
Leo George Hertlein and A. M. Strong