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U.S. NATIONAL MUSEUM BULLETIN 227 



covering the middorsum, giving a straggly appearance. Neurosetae 

 of postbrancliial region with upper ones long, slender, capillary, 

 middle ones curved, with mucronate tips, with few lower ones shorter, 

 heavier, hooked (fig. 80i). With conical to fusiform neuropodial 

 postsetal lobes in prebranchial and branchial segments, lacking in 

 posterior segments. Eversible proboscis short, sachke. Color, in 

 life: light green, branchiae green with red center, setae glistening 

 white; color, in alcohol: diffused brownish. 



Figure 80. — Paraonidae, a-e, Aricidea jeffreysii: a, lateral view anterior end; b, same, 

 posterior end; c, branchial segment; d, posterior segment; e, neuropodial crotchet, f-g, 

 Aricidea suecica: /, posterior segment; g, neuropodial crotchets with mucronate tips. 

 h-i, Aricidea quadrilohata: h, lateral view anterior end; i, posterior segment. 



