﻿SIPUNCULID WORMS OF CALIFORNIA — FISHER 373 



fauna of California, only three inconspicuous species having been 

 found: Q. margaritacea calif omiensis, G. hespera, and G. macginitieiy 

 all rare or very local in occurrence. 



Only two sipunculids are known from Alaska: Golfingia margaritacea 

 (Sitka, Kilisnoo, Dutch Harbor, Point Barrow) and Phascolosoma 

 agassizii (Cape Fox, Prince William Sound, Kodiak). Undoubtedly 

 0. vulgaris occurs in shallow water. 



Phascolosoma agassizii has been taken from intertidal stations 

 on Vancouver Island and the Queen Charlotte Islands, British Colum- 

 bia, and G. margaritacea has been taken at Vancouver Island, 



Washington has four species, all from Puget Sound and vicinity: 

 Golfingia vulgaris, G. margaritacea, G. pugettensis, and Phascolosoma 

 agassizii. 



Two species are known from Oregon (Coos Bay) : Dendrostomum 

 pyroides and Phascolosoma agassizii. 



With this unimpressive showing, I need hardly emphasize that this 

 paper is not a definitive treatment of the fauna. While it is improb- 

 able that many new intertidal forms will come to light, it is equally 

 probable that the list of shallow-water and deep-sea species is very 

 far from complete. 



In this paper I have used Golfingia Lankester in place of Phas- 

 colosoma authors and have replaced Physcosoma Selenka with Phas- 

 colosoma Leuckart in order to conform to accepted rules of nomen- 

 clature. For the same reason I have employed Dendrostomum Grube, 

 the original spelling, instead of Dendrostoma, a later emendation by 

 Refers tein. 



KEY TO THE GENERA OF SIPUNCULOIDEA 



o'. No horny or calcareous shield or cone at anterior end of trunk, although 

 enlarged horny papillae and tubercles sometimes present in anal region. 

 b^. Tentacles surround mouth; tentacles few or many, simple or branched; 

 nuchal organ, when present, dorsal to tentacles, 

 c'. Longitudinal muscle layer of wall of trunk divided into separate bundles. 

 d^. Skin of usually thick body wall provided with longitudinal coelomic 

 canals or with independent coelomic pouches longitudinally ar- 

 ranged, 

 e*. Integumental coelomic spaces are longitudinal canals under cuticle; 

 4 retractors; intestinal coil with a long, anteriorly anchored loop; 

 introvert with subtriangular scalelike papillae directed posteriorly. 



Sipvmculus Linnaeus, 1766 (p. 375) 



e^. Integumental coelomic spaces are in form of independent, usually 



irregular pockets arranged in longiseries; no accessory anterior 



loop in intestinal coil. 



p. Scalelike papillae on introvert; anterior to the 4 retractors are 2 



small protractors arising in front of anus; irregular integumental 



coelomic spaces independent in each quadrilateral division of 



skin and sometimes with several long papillae; spindle muscle 



arises on rectum Xenosiphon Fisher, 1947 (p. 377) 



