﻿SIPUNCULID WORMS OF CALIFORNIA — FISHER 401 



two strong ventral retractors springing from anterior border of the 

 posterior third of the trunk; one fixing muscle; two wholly free 

 nephridia. 



SYNOPSIS OF SPECIES OF SUBGENUS THYSANOCARDIA 



a'. Anus and nephridia do not open on introvert; esophagus lies between the 

 two retractors to which it is attached. 

 6'. Introvert long, 2 to 4 times length of trunk. 



c*. Anus spaced from posterior extremity about OTie-fifth total length; " 

 tentacles in 6 to 8 groups, relatively few; villi absent from anterior 



part of contractile vessel procera (Mobius), 1875 (p. 402) 



c^. Anus spaced one-fourth to one-third total length from posterior extrem- 

 ity; tentacles numerous, in more than 8 groups. 

 d^. Villi simple, rather sparse, present only on posterior part of contractile 



vessel, one fixing muscle nigra (Ikeda), 1904 



cP. Villi thick, bushy, branched, present throughout entire length of con- 

 tractile vessel; 2 fixing muscles macginitiei, new species (p. 402) 



6*. Introvert short, less than twice trunk length. 



c'. Villi of contractile vessel very short and numerous; no coecum. 



d*. Tentacular crown a simple circle of tentacles . hyugensis (Sato), 1934 

 dP. Tentacular crown complex, of many tentacles. 



e'. No fixing muscle hozawai (Sato), 1937 



e?. Two fixing muscles catherinae (F. Mtiller), 1867 



c". Villi of conspicuous length, sometimes bushy and branched. 



d'. No fixing muscle; a diverticulum at end of esophagus; nephridia very 



long martensi (Collin), 1901 



<?. One fixing muscle; villi absent from anterior part of contractile vessel, 

 e'. Skin papillae visible to naked eye. 



semperi (Selenka and de Man), 1883 

 €^. Skin papillae not visible to naked eye; apparently smooth. 



pugettensis, new species" 

 d*. Three fixing muscles; villi present all along contractile vessel, 

 e*. Papillae on introvert-base cylindrical, 0.05 mm. high. 



zenibakensis (Ikeda), 1924 



c*. Papillae club shaped, 0.12 mm. high onagawa (Sato), 1937 



o*. Anus and nephridia open on base of introvert; esophagus free from retractors 

 but anchored by a fixing muscle, attached posterior to origin of retractors. 



pyriformis (Lanchester), 1905 



'» This is the proportion given by Thiel (1905, p. 71) and the same obt'iins with my specimens. Oerould 

 (1913, p. 384) studied large specimens from ofl Marthas Vineyard, Mass. The larf?est measured 180 mm. 

 total length; trunk behind anus, 75 mm. The introvert (105 mm.) is thus 1.4 the length of trunk, not 2.5 

 as Oerould states. It seems probable that these specimens are not true procera. 



i« GOLFINQIA PUGETTENSIS, new species 



Diagnosis. — Nearly related to O. semperi, but with very inconspicuous dermal papillae which are not 

 visible without a lens; introvert length of tnmk or slightly more, but less than twice length; tentacles very 

 numerous, filiform; papillae tiny, the largest 0.07 mm. long and others much smaller; skin light to dark sepia, 

 finely wrinkled; retractors arising in posterior third of trunk; villi crowded, branched, similar to those of 

 macginitiei, but confined to free part of esophagus and extending only a very short distance forward between 

 retractors; a strong fixing muscle anchors posterior end of esophagus to dorsal wall (position of F' of mac- 

 ginitiei); coecum present; intestinal spiral with at least 48 single coils; nephridia rather short, free, opening 

 in front of anus (distance varying with contraction of longitudinal muscles of body wall). 



Color, sepia. 



Tvpe.— V.S.N. M. No. 21215, Trevor Kincaid, 8 specimens. 



Type locality.— BosQsh Bay, Puget Sound, Wash. Also from San Juan Island, Wash., sandy mud, 

 zero tide, D. L. Ray, 8 specimens. 



To see the dermal papillae, a XIO lens is required, whereas Selenka (1883, p. 9) states that in semperi 

 the papillae of the entire body can be seen with the naked eye. 



