PREVIOUSLY REPORTED HABITAT: Intertidal to 350 m; hard bottom. 

 GULF OF MEXICO BLM-OCS OCCURRENCE: Two stations off central and north- 

 western Florida (Figure 30-135); 37-43 m; coarse sand. 



DISTRIBUTION: Alaska to California, northeast Japan Sea, Japan, East 

 Indies, North Carolina, ?Gulf of Mexico. 



Syllis (Typosyllis) corallicoloides Augener, 1922 

 Figures 30-137, 138a-g 



Syllis ( Typosyllis ) corallicoloides Augener, 1922:42; 1927a:134; 



1927b:51; 1933:227; 1936:341. 



Eusyllis antillensis Augener, 1922:44. 



Syllis ( Typosyllis ) tigrinoides Augener, 1922:43; 1927b:52; 1931:286; 



1933:229. 



Typosyllis corallicoides [sic] — Hartman, 1951a:41. 



Typosyllis corallicoides [sic] — Marsden, 1960:995. 



Syllis ( Typosyllis ) corallicoloides— Uebelacker, 1982b:587, fig. 3a-j. 



Syllis ( Typosyllis) tigrinoides— Uebelacker, 1982b:589, fig. 4a-i. 



MATERIAL EXAMINED: 

 Gulf of Mexico BLM-OCS: 



SOFLA 20-11/80 (2 spec, USNM 75307; 2 spec, USNM 75311); MAFLA 2315A- 

 2/78 (2 spec). 

 Supplementary Material: 



West Indies--3t. Croix, Grube coll. (MNHUB 3020, 2 syntypes of S. 

 corallicoloides ); St. Thomas Sound, Kiikenthal and Hartmeyer colls., Jan. 

 1907 (MNHUB 6594, holotype of Eusyllis antillensis ). 



Florida — Dry Tortugas, Bird Key Heef and S. W. Channel, Hartmeyer coll. 

 (MNHUB 6597, holotype of Syllis tigrinoides ). 

 DESCRIPTION: 



Length, to 24.7 mm (previously reported to 17.7 mm); width, to 1.0 mm 

 (previously reported to 1.8 mm). Body fairly stout anteriorly, slender 

 posteriorly; all specimens incomplete with up to 72 setigers. Prosto- 

 raium oval with four lentigerous eyes, and with or without two ocular 

 spots near base of palps (Figure 30-1 38a). Median antenna with 27-39 

 articles, lateral antennae with 18-26 articles. Palps separate basally, 

 rounded distally. Nuchal organs sometimes lightly pigmented. Dorsal 

 tentacular cirri with 21-38 articles, ventral ones with 14-25 articles. 

 Dorsal cirri alternating in length, with 14-61 articles anteriorly, 12- 

 49 articles medially. Ventral cirri digitiform, extending beyond para- 

 podia anteriorly. Composite falcigers with lightly serrate, bidentate 

 blades (Figure 30-138b,c); inferior falcigers with broad shafts in 

 midbody region (Figure 30-138d); blade-length ratios 1.5-1.8:1 anterior- 

 ly, 1.2-1.8:1 medially, 1.4-1.6:1 posteriorly. Superior simple seta 

 distally bifid (Figure 30-138e), present posteriorly. Inferior simple 

 seta distally bidentate (Figure 30-138f), present posteriorly. Pharynx 

 extending to setigers 8-15; margin smooth, surrounded by 17-20 soft 

 papillae (Figure 30-138g); raiddorsal tooth subterrainal. Proventricle 

 extending from setigers 9-16 to 16-29, with 29-36 muscle cell rows. 

 Ventricle occupying 2-5 setigers. Proventricle 0.7-1.4 times as long as 

 pharynx and 2.3-5 times as long as wide. 



REMARKS: Uebelacker (1982b:589) synonymized Eusyllis antillensis with 

 Syllis tigrinoides , and suggested that S^. tigrinoides and S. corallicol- 

 oides might also represent the same species. Differences between the 



30-143 



