with delicate symmetrical blades taperinp to 

 fine tips and a row of avicular uncini with 

 striated crests, long arched necks and rather 

 long shafts. Abdomen with about 70 segments; 

 pygidium blunt. Abdominal notosetae as avicu- 

 lar uncini similar to those on thorax. Abdominal 

 neurosetae as small winged capillaries with 

 blades broad basally tapering to long slender 

 tips. 



Rcniark.'i. — As noted above, only one type of 

 abdominal neuroseta was found in the speci- 

 mens from Beaufort, namely capillaries with 

 wings broad at the base and then narrowing to 

 very long slender tips. These may be inter- 

 preted as modified paleae or winged capillaries. 

 When partially retracted, only the long slender 

 tip shows like a narrow-winged capillary, and 

 it is possible that this is the reason why Ehlers 

 describes (but does not figure) two types of 

 abdominal neurosetae. Ehlers referred his speci- 

 mens to Pdtaniis but as this was preoccupied 

 in the Lepidoptera, Chamberlin (1919) proposed 

 a new name PatciDictlnis. This appears so close 

 to Pofaniilla that I have accorded it the rank of 

 a subgenus. 



Records. — Three specimens off Beaufort in 

 18 m on coral heads (20, *). 



Dist)-il)iiti(>H. — Florida and West Indies; in 

 10 to 500 m. 



Potantilla renifonnis (Leuckart. 1849) 



Piitdmilhi oriilifi-m Verrill, 1873a: 822, pi. 17: 



Fig. 86. 

 Potamillit toiiiiosd Webster, 1879: 265, pi. 10; 



Fig. 149-153. 

 PotaniilUi reiiifoi-niis. - Fauvel, 1927; 309, Fig. 



107 a-1. -Johansson, 1927: 142. - Day, 1967: 



764, Fig. 37.3. a-f. 

 P.sc'iKlopotaniillu reiiifonniii. - Hartman, 1945; 



47; 1959a; 557. 

 PdtdnnlUt (Psc/idopofa niilla ) oc/dlfcrd. - Miner, 



1950: 119. 



RcmarkK. — I agree with Johansson that Pseii- 

 dopiitdniilld Bush is not separable from Pota- 

 niilla Malmgren. 



RccoydK. — Cape Hatteras to Beaufort, inter- 

 tidal to a few meters (3, 11, 15, 18). 



DislrihiitioH. — Cosmopolitan; intei'tidal to 

 100 m. 



Megalomma lobiferum (Ehlers, 1887) 



BiviirhiiiiuDid lobiferiun Ehlers. 1887: 254, pi. 



53: Fig. 10-15. 

 Meyalonima lobiferum. - Hartman, 1951; 115. 



Remdrks. — This species is close to M. rc.-<icii- 

 losd III (Montagu) but differs in having a straight 

 unnotched collar and pickaxe setae with sym- 

 metrical blades. 



Ricord.^. — On shallow reefs off North Caro- 

 lina (14). 



Distribution. — North Carolina and Florida; 

 intertidal to 4 m. 



Megalomma bioculatum (Ehlers, 1887) 



Brdiichioni iiid Inoculdtiun Ehlers, 1887: 260, pi. 



53; Fig. 1-9. 

 Mcgdloiiniid hiociildtii 1)1 . - Hartman, 1951; 115. 



Description. — Body up to l:', mm long with 

 brown bars aci'oss radioles and sometimes 

 brown marks t)n venti'al surface of thorax. Tube 

 covered with sand or gravel. Branchial lobes 

 short, each with a semicircle of about 16 radioles. 

 Palps short, broad, faintly spiral. Large sub- 

 terminal eyes on dorsal pair of radioles pre- 

 ceding the very short naked tijjs. No eyes on 

 other radioles. Collar low, widely divided dor- 

 sally, not notched dorsolateral ly but slanting 

 forward and forming paired triangular ventral 

 lappets. Thorax of eight setigers with broad- 

 winged capillaries of varying length in noto- 

 podia. Notosetae including an anterior row of 

 pickaxe setae with plain delicate blades taper- 

 ing symmetrically to fine tips and a posterior 

 row of avicular uncini. Individual uncini with 

 striated crests, short necks, and elongated 

 bases. Abdomen with notosetae similar to avicu- 

 lar uncini of thorax; neurosetae as broad-winged 

 capillaries. 



Records.— Off Beaufort in 18-40 m (20, 21, 

 *). 



Distribution. — Florida and the Gulf of Mexico; 

 in 20-200 m. 



Sabella melanostiqma Schmarda. 1861 



Sdbclld iiK Idiiostic/ma. - Ehlers 1887; 263. - 

 .Johansson. 1927: 121, text fig. 15. 



126 



