FAMILY STERN ASPIDAE 



Only one genus and species known from RccDrds. — Off Beaufort in 600 m (*). 



North Carolina. Distribiitio)i. — Cosmopolitan on stiff mud or 



clay bottoms in 0-600 m. 

 Steriiaspis scutata (Ranzani. 1817) 



Stcnintipi.'i scKtata. - Fauvel, 1927: 216, Fig. 76 

 a-g. - Day, 1967: 648, Fig. 31.1. a-d. 



FAMILY FLABELLIGERIDAE 

 Key to genera and species 



1 Neurosetae as annulated capillaries, very similar to notosetae. 



Cephalic cage poorly developed. [Eight branchial filaments 

 {Diplocirnis). Branchial filaments equal in thickness; neuro- 

 setae with a minute terminal hook] D. c«/;e».s/.s 



1' Neurosetae as falcate hooks, very different from notosetae. 



Cephalic cage well developed 2 



2 Neurosetae as articulated hooks. Body covered with very long 



clavate papillae embedded in a mucilaginous sheath (Fhi- 



bcUifiera) Flabelligera sp. 



2' Neurosetae as simple hooks often with barred shafts. Surface 



with short papillae but no mucilaginous sheath 3 



3 Neuropodial hooks with unidentate tips. Branchial filaments 



arranged in a horseshoe-shaped arc. Body with skin papillae 



numerous but not arranged in longitudinal rows (Pin msa) 4 



3' Neuropodial hooks with bidentate tips. Branchial filaments 

 arranged in multiple series on a tongue-shaped lobe. Body 

 with skin papillae arranged in a few longitudinal rows on 

 dorsum and ventrum and whole surface encrusted with sand 

 iPironiis). [Two rows of papillae <m dorsum and two on 

 ventrum] 5 



4 Skin papillae encircling anterior margins of segments. Bran- 



chial filaments of two sizes Phcnisa iiiflatn 



4' Skin papillae irregularly scattered. Branchial filaments all 



similar Pliernsa ehler.'^i 



5 Neuropodial hooks start on .setiger 3 {Pironiis cnica) No N.C. record 



5' Neuropodial hooks start on .setiger 4 Pii-omifi < nica trrbi<tcr) 



Diplocirrus capensis T)ay , 19&1 „ i » ir i n ^ * 



^ ^ • form, about 15 mm long. Buccal apparatus re- 



DiplocliTii>i capeiisis Day, 1961: 509, P'ig. 9 a-f; tractile, consisting of an indistinct prostomial 



1967: 666, Fig. 32.4. e-j. ridge with ocular pigment, a pair of grooved 



palps and eight subequal branchial filaments. 

 Dencriptidu. — Body muddy brown, arenicoli- Setiger 1 with two or three elongated notosetae 



105 



