TABLE 1.

The distribution of Prionitis sp. utilized in this investigation^a

Prionitis sp.	Location of collection	Gall formation
P. lanceolata	Tomales Point, Marin Co., Calif.	+
P. lanceolata	Pigeon Point, San Mateo Co., Calif.	+
P. lanceolata	Santa Cruz Point, Santa Cruz Co., Calif.	+
P. lanceolata	Hopkins Marine Life Refuge, Stanford University, Pacific Grove, Calif.a	+
P. lanceolata	Carmel State Beach, Carmel Co., Calif.	+
P. lanceolata	Piedras Blancas, San Luis Obispo Co., Calif.	+
P. lanceolata	San Nicholas Island, Channel Islands, Calif.	+
P. lanceolata	Anacapa Island, Channel Islands, Calif.	+
P. lanceolata	Sycamore State Beach, Malibu Co., Calif.	+
P. lanceolata	Royal Palms Beach, Los Angeles Co., Calif.	+
P. filiformis	Cape Perpetua, Oreg.	+
P. filiformis	Lufenholtz Beach, Humbolt Co., Calif.	+
P. decipiens	Port Paita, Peru (type locality)	+
P. filiformis	Carmel State Beach, Carmel Co., Calif.b	−
Prionitis sp.	Mission Bay, San Diego Co., Calif.b	−
P. lyalli	Pigeon Point, San Mateo Co., Calif.	−

^aThe distribution and occurrence of gall-bearing Prionitis collected in nature. 

^bSubtidal collections.