A.ridtliclla DiHCosa. - Hartman, 1945: 38, j)l. 8: 



Fig. 5, 6; 1951: 104, pi. 1. 

 Clymenella miicostt. - Mangum, 1962: 5. 



Records. — Beaufort Sound, intertidal (5, 7, 1 1, 

 13, 15, 16, *). 



Dist)-ibiitioii. — Noi-th Carolina to P'lorida; 

 forms ma.ssed tube.s in intertidal sandhank.s. 



Branchioasychis americana Hartman. 1945 



Maldiuic ('lt>i/(/ut(i. - Andrews, 1891a: 294 (um/ 



Verrill). 

 Bmiicliioasychis americana Hartman, 1945: 40, 



pi. 9: Fig. 1-4; 1951: 105. 



Record.'^. — Beaufort Sound, intertidal (5, 11, 

 13). 



Distribntio)i. — North Carolina to F"'lorida and 

 the Gulf of Mexico; intertidal to 5 m in .soft black 

 mud. 



Asyclii.s carolinae New Species 



KiKUiv 1 11.-1" 



A-'^ncliis carolinae Day, Field, and Montgomery, 

 1971: 123 {iiinnen )iHdin)i). 



Holotj/pe. — USNM 43139; nine paratypes, 

 USNM 43140. 



Description. — Holotype complete, 22 mm long 

 by 0.5 mm. Body encased in a slender mud tube 

 and pale in alcohol apart from black flecks on 

 head and first two segments. Prostomium ( Figure 

 14b) broad, flattened, and smoothly curved in 

 front. No eyespots. Cephalic plate oval ; raised 

 margin with one deep lateral incision but other- 

 wise smooth; posterior part forming a deep 

 pocket extending back to end of head. Cephalic 

 ridge low, broad, and indistinct. Nuchal grooves 

 strongly curved. Body with 18 .setigerous seg- 



ments. Anterior segments increasingly long; 

 -seventh and eighth 8 times longer than broad; 

 ninth and succeeding ones progressively shorter 

 and setiger 18 broader than long. No achaetous 

 preanal segment. Pygidium {Figure 14c) elon- 

 gated, only slightly shorter than setigers 17 and 

 18 combined. Anus dorsal with a grooved plate 

 beyond it overhanging a very deep ventral 

 pocket. Setiger 1 without neurosetae; neuro- 

 l)()dia of setigers 2 to 4 with 3-5 neuropodial 

 hooks; setiger 5 and subsequent segments with 

 a row of 12-15 hooks. Hooks of setigers 2-4 

 (F'igure 14d) with an arc of 3 denticles above 

 main fang; hooks of subsequent segments (Fig- 

 ure 14e, f) with a close-set cap of 10 teeth above 

 main fang and well-developed tendons below. 



Remarks. — Most species oi Asycliis, including 

 the type species A. biceps, have a toothed mar- 

 gin around the cephalic plate. .4. capoisis Day 

 from South Africa has a cephalic margin similar 

 to that of A. carolinae but it has 19 setigers. 2 

 preanal segments, and the pygidial plate has 

 no ventral pocket. Malda)u cncnligera Ehlers, 

 from deep water off Florida has a similar head 

 but it too has 19 setigers and the pygidium is 

 truncate. Possibly the closest is Asi/chis elon- 

 (/(ttd (Verrill), originally named Maidane elonija- 

 ta but transferred by Verrill (1900) to the genus 

 Maldanopsis, which is now regarded as a .sy- 

 nonym of Asj/cliis. Dr. Pettibone kindly .sent 

 me a specimen identified by Verrill for compari- 

 son with .4. carolinae. The two species are very 

 alike in regard to the head and pygidium but 

 A. (loiH/ata has 19 setigers and from setiger 6 

 onwards the body has a scattering of small 

 blisters or pustules. In this respect A. i lon(/ata 

 is closer to B)'a)tcliioas!jchis america)ia Hartman 

 but it lacks the simple branchial filaments 

 which characterize the latter. 



R(Cords. — Common off Beaufort in 120-200 

 m (21. *). 



FAMILY OW ENIIDAE 



Only one genus and sjjecies known from 

 North Cai'olina. 



Oivenia fusiformis Delle Chiaje, 1844 



Records. — Beaufort, intertidal to 200 m (5, 11, 

 13,21, *). 



Distribution. — Cosmopolitan in temperate and 

 tropical seas from to 200 m. 



Owenia fusiformis. - Fauvel, 1927: 203, Fig. 71 

 a-f. - Day, 1967: 649, Fig. 31.1. e-j. 



104 



