UNIVERSITY OF CALIFORNIA PUBLICATIONS 



ZOOLOGY 



Vol. 1, pp. 1-104, Pis. 1-11 November 1, 1902 



THE HYDROIDA 



OF THE 



PACIFIC COAST OF NORTH AMERICA, 



WITH ESPECIAL REFERENCE TO THE SPECIES IN THE 

 COLLECTION OF THE UNIVERSITY OF CALIFORNIA. 



BY 

 HARRY BEAL TOEEEY. 



CONTENTS. 



PAGE 



Introduction 3 



Distribution of Species 5 



Table of Distribution 8 



Condensed Table of Numerical Distribution of Species 10 



Table of Distribution by Families 17 



Key to West Coast Hydroida IS 



Systematic Discussion 20 



Gymnoblastea 26' 



Bougainrilliidae (Bimeria, Perigonim/us, Bougairmllia*) 26 



Clavidae (Clava) 30 



Corynidae (Syncoryne, Coryne) ::i 



EudendrUdae (Eudendrium) 32 



Hydractiniidae ( Hydractinia) 34 



Pennariidae ( Corymorpha, Tubularia) 37 



Calyptoblast'ea 47 



Haleciidae (Campalecium, Haleeium) 47 



Campanulariidae ( Campanularia, Gonothyraea, Obelia, Clytia,* Caly- 

 eella) 51 



*Two species should be added, though fottnd too late to be given their proper places in 

 text or tables. One. a Bougainvillia, was growing with T. crocea, in Oakland Creek. It is 

 probrfhly the B. mertensi of A. Agassiz, ('65), which for reasons stated below (p. 29) I had 

 identified with Bimeria franeiscana. The size and habit of the two species are similar. 

 There are many medusae attached to the stem of the Bougainvillia, each of the larger ones 

 having four pairs of tentacles and eight eye spots. The other newly found species is l 'lytia 

 bicophora Ag. It was growing on stems of T. crocea, where it has been found on the eastern 

 coast. It has not been recorded previously from the Pacific Coast. Blastostyles with 

 medusae. Both species were collected September -ti. 



