and had 13 segments with both notosetae and 

 uncini. The thoracic uncini had four or five 

 teeth above the rostral point. The abdomen was 

 broken at the 13th segment; the uncinigerous 

 pinnules were rectangular as in M. atknitica and 

 there were rudimentary notopodial lobes above 

 the first three uncinigerous pinnules. 



In view of the fact that ail the characters 

 which can be checked on the type material 

 agree with those recorded on the fresh speci- 

 men and that the only points of difference con- 

 cern features which are probably due to the 

 poor condition of the syntypes, it is proposed 

 that Meliiniopsis atlaiitiea be defined as having 

 a ridge across segment 6 divided into 16 tri- 

 angular lobes and possessing 13 uncinigerous 

 thoracic segments starting from segment 7. 



As shown by Day (1964), the related genera 

 of the subfamily Melinninae with two groups 

 of four gills are Mtliiniexis Annekova, with 14 

 uncinigerous thoracic segments and McIhDikhs 

 Wesenberg-Lund, with 12. Both of these genera 

 have an enlarged tentacular process. 



Records. — One specimen off Beaufort in 

 3,020 m (*). 



Distrib/itio)!. — Off Chesapeake Bay in 3,110 

 m. 



Melinna maculata Webster, 1879 



Mcl'nnia niaciilata Webster, 1879: 261, pi. 10: 

 Fig. 145-147. - Hartman, 1951: 108. pi. 27: 

 Fig. 1,2. 



Mrlhnia oistitta. - Hartman, 1945: 43 {hoh Sars). 



Recnrd.'<. — Cape Hatteras to Beaufort, inter- 

 tidal (3. 11, 13, 18). 



Distributiou. — Virginia to the Gulf of Mexico; 

 intertidal to 10 m. 



Isolda piilchella Mullen IH.'iS 



P'iKure 15a-f 



Isoldd pnlvhrUa. - Augener, 1918: 517, pi. 7: 

 Fig. 229, te.xt Fig. 88. - Day, 1967: 691, Fig. 

 35.1. k-n. 



Dcsniptio)!. — Body up to 45 mm long, pale 

 brown in color with barred tentacles. Prostom- 

 ium (Figure 15a) a curved hood pinched in 

 laterally. Numerous minute eyespots. Buccal 

 tentacles grooved and ari.se from a shelf in roof 



of mouth. Oblique lateral folds extending from 

 ventrum of segment 3 around sides of branchial 

 region and uniting with a transverse ridge 

 across segment 6. Margin of transverse ridge 

 smooth (Figure 15b). Two groups of four gills 

 on segment 3; gills in each group fused basally; 

 outer two gills smooth and cirriform, inner two 

 gills pinnate. Notosetae of branchial segments 

 include a stout hook on segment 4 (Figure 15c) 

 and small tufts of winged capillaries on seg- 

 ments 5 and 6. Neurosetae of branchial seg- 

 ments as fine acicular setae (Figure 15d) deeply 

 embedded on sides of segments 3, 4, and 5 but 

 not 6. Thirteen uncinigerous thoracic .segments 

 starting from segment 7. About 32 abdominal 

 segments with square uncinigerous pinnules; 

 no vestigial notopodia. Thoracic uncini (Figure 

 15e, f) with a single vertical series of five or six 

 teeth above small rostrum and basal prow. 



R(C(ii-d.'<. — A single specimen from 20 m off 

 Beaufort (*). This is a new record for the United 

 States. 



DIst i-ihii t idii . — Brazil and tropical West 

 Africa; intertidal to 20 m. 



Aiichenoplax crinita Ehlers. 1887 



Auchenapla.i- crinita Ehlers, 1887: 209. pi. 44: 

 Fig. 10-16. - Hartman, 1965a: 216, pi. 47: 

 Fig. a-d. 



Records. — Off Beaufort in 600 m (*). 

 Distributio)/. — Massachusetts to South Amer- 

 ica and Morocco in 200-1,500 m. 



Samythella eliasoni New Species 



FiKUl'f l.')K-ni 



Echjsippe roiH'Ui. - Eliason, 1955: 10, Fig. 3 a-1. 

 - (Noit) Li/sippt ruiielli Fauvel. 1936: 96, 

 Fig. 13 a-d. 



Holotype.^VSNM 43145. 



Description. — Holotype colorless in alcohol, 

 10 mm long, and encased in a friable mud tube. 

 Prostomium (Figure 15g) as a flattened triangu- 

 lar lobe overhanging mouth; no glandular pros- 

 tomial ridges but one pair of small eyes. Short 

 grooved buccal tentacles protruding from mouth. 

 Branchial ridge above segment 3 well developed 

 with right and left groups of three gills nar- 

 rowly separated in median line, (iills all very 



li;3 



