﻿SIPUNCULID WORMS OF CALIFORNIA — FISHER 399 



English Channel, Theel was dealing; with the types. However, 

 laetmophila differs from eremita in having a translucent body wall, in- 

 trovert spines, much better developed wing muscles and in lacking 

 fixing muscles (Th^el, fig. 173). 



Golfingia abyssorum is slenderer than laetmoyhila; it lacks the thick 

 pulpy papillae of spinelet zone; the spinelets are of an entirely different 

 form and lack the opaque brown cortical layer (figs. 71-75). Wesen- 

 berg-Lund (1933, p. 10, fig. 3) mentions fixing muscles in her specimen 

 of abyssorum and her figure indicates a feebler development of wing 

 muscles. She states also that the contractile vessel is absent. 



GOLFINGIA ELACHEA. new species 



Platb 25, Figures 1-3 



Diagnosis. — A small form belonging to section of subgenus having a 

 very short introvert, no hooks, and nephridia opening behind func- 

 tional introvert on same level as anus. Skin, including that of intro- 

 vert, thickly beset with tiny brown pyriform papillae; introvert less 

 than half length of trunk, from which it is separated by a shoulder; 

 retractors stout, originating midway between anus and posterior 

 extremity; alimentary canal with seven filing muscles. 



Description. — Length 17.5 mm.; trunk 12 mm. The introvert 

 begins at the horizontal lines on plate 25, figure 1, where the body has 

 a beveled shoulder, and is less than one-half the length of the trunk. 

 Body wall thin but opaque except anterior part of introvert. Skin 

 thickly covered with brown pyriform papillae of nearly uniform size 

 on trunk (0.06 mm. high), becoming a little longer on the "shoulder" 

 in front of the anus, but not differentiated into an anal zone (fig. 3), 

 On the introvert the papillae are abruptly smaller and diminish slightly 

 in size up to a narrow bare zone behind tentacles. On the middle of the 

 introvert, the papillae are 0.035 to 0.04 mm. high (fig. 2). The papillae 

 are invisible to the naked eye but give the skin surface a soft velvety 

 texture. The tentacles are rather numerous, filiform, 0.8 to 0.9 mm. 

 long by 0.07 mm. thick. A cluster of ventral tentacles are conspicu- 

 ously shorter. 



Retractors two, strong, arising midway between the anus and the 

 posterior extremit}', the inner margin near the nerve cord (the right 

 closer than the left). Anteriox'ly they are narrow. The characteristic 

 feature of the species is the large number of fixing muscles — at least 7 

 (fig. 1), ol which F', F^, F^ arise from the dorsal body wall forward 

 of the middle of the trunk, F^ and F® from the ventral surface to the 

 right of the nerve cord in front of the right retractor; F^ and F^ from 

 the right side, about midway between the base of the retractor and 

 the base of the nephi-idium. F^ is attached to the esophagus at the 

 terminus of the contractile vessel; F^, F^, and F'' are attached to 



