numerous granules. Collar incised, forming a 

 median ventral lobe and paired lateral lobes. 

 Lateral lobes continuous with thoracic mem- 

 branes reaching setiger 7 and uniting ventrally 

 as a short ai)ron at origin of abdomen. Collar 

 setae include limbate capillaries and stout 

 bayonet-setae with two bosses at base of blade. 

 Thoracic uncini with one row of six teeth graded 

 in size. Abdominal uncini with four to eight 

 teeth but otherwise similar to those of thorax. 

 Abdominal neurosetae changing from T-shaped 

 forms, with a denticulate blade at right angles 

 to shaft, to slender, wingless capillaries near 

 posterior end of abdomen. 



Remarks. — As shown by the above descrip- 

 tion, the subspecies f/cfn/^/o.s-o is similar to 

 S. vermiciila ris apart from the granules on the 

 operculum. I do not feel that it merits specific 

 rank. 



Rccoi-ds. — On coral off Beaufort in 18 m 

 (20, *). 



Spirobranchus giganteus (Pallas, 1766) 



Spirohranclnis ciicfoitciis. - Ehlers. 1887: 286, 

 pi. 57: Fig. 1-7. - Pixell. 1913: 80, pi. 8: Fig. 

 6. - Day, 1967: 803, Fig. 38.3. h-k. - ten 

 Hove. 1970: 14, pi. 2: A, B, Fig. 35-63. - 

 Zibrowius, 1970: 14. pi. 3: Fig. 1-10. 



Rcconlfi. — Off Beaufort on corals in 18 m 



(20, *). 

 Distvibutiitn. — Circumtropical in 0-50 m. 



Hydroides crucigera Morch, 1863 



HjidrokU s o-iicigov. - Monro, 1933c: 1083, Fig. 

 26. 



Hi/driiichs l)isplii()sa. - Bush, 1910: 496. - Hart- 

 man, 1942a: 88. 



R( cords. — Cape Hatteras area, intertidal, and 

 off Beaufort on coral in 18 m (18, 20, •). 



Distrihiitiini. — South America (Punta Are- 

 nas); Burmuda; North Carolina; Gulf of Pana- 

 ma; Hawaii; intertidal to 30 m. 



Hydroides parva (Treadwell, 1901) 



EuTpomatus parrus Treadwell, 1901: 210, Fig. 

 79, 80. 



Hi/d roides ( Ell pn nia t II s ) pcu'rii s . - Augener , 1933: 



366. 

 Hiidroidi's parvus. - Zibrowius, 1970: 6, i)l. 1: 



Fig. 5, 6. 



Records. — Cape Hatteras area, intertidal (18). 

 Distrihiitloii. — North Carolina to the West In- 

 dies; Gulf of Mexico and Columbia; intertidal. 



Hydroides sanctaecrticLs (Morch. 1863) 



Hi/droides saiictae-crucis. - Fauvel. 1919a: 478, 



Fig. 23. 

 Eiiponiatiis doridiiniHs. -Wells and Gray. 1964: 



74. 



Records. — North Carolina. Gulf of Mexico 

 and French Guiana; intertidal to a few meters. 



Hydroides dianthus (Verrill. 1873) 



Eiiponiatiis diaiifliiis. - Hartman, 1945: 48, pi. 



10: Fig. 1; 1951: 118. - Rioja. 1957: 260, 



Fig. 15. 

 Hifdroidts diaiitlnis. - Zibrowius, 1971a: 697, 



Figs. 1-5. 



Reco}-ds. — Cape Hatteras to South Carolina. 

 intertidal to about 30 m (5, 8. 9. 11. 13, 14, 15, 

 18, 19,20, •■). 



Distribution. — Massachusetts to the West In- 

 dies and the (lulf of Mexico; Mediterranean; 

 intertidal to 30 m. 



Hydroides uncinala (Philippi, 1844) 



PMKUi-e 18 h, i 

 Eiipon/atiis 11 iiciiiatiis. - Ehlers, 1887: 285. pi. 



58: Fig. 6-11. - McClo.skey, 1970: 26. 

 Hydroides inieiiiata. - Fauvel, 1927: 357, F^ig. 



122 a-h. - Zibrowius, 1968: 109, pi. 13: 



Fig. 28. 



Deso'iptioii. — Length up to 60 mm. Tube 

 stout, rugose, adnate. often irregularly coiled. 

 Opercular stalk without wings. Opercular fun- 

 nel (Figure 18h) radially symmetrical and formed 

 of about 30 radii ending in tapered points. 

 Opercular crown of 10-11 equal horny spines 

 curving inwards and ending in sharp points; 

 a faint lateral flange proximally, but no lateral 



132 



