92 



U.S. NATIONAL MUSEUM BULLETIN 227 



.fAn 



Figure 22. — Alciopidae, Vanadis longissima: a, dorsal view anterior end of female; i, 

 same, ventral view; c, anterior parapodium; d, parapodium from middle region. 



4 pairs, the first pair larger and united ventrally by an incised mem- 

 brane. First 6-8 segments with parapodia rudimentary, without 

 setae. In female, dorsal cirri of first 2 pairs of rudimentary parapodia 

 modified into large globular sperm receptacles (fig. 22, a,h). 



Parapodial lobes longer than cirri, cylindrical, tapering to a single 

 short cirriform appendage, from which aciculum projects. Setae 

 long, compound, fine, transparent. Dorsal cirri elongate-ovate, 

 ventral cirri narrower and elongated. Pigmented segmental glands 

 found on 1 or 2 successive segments followed by 4-9 segments which 

 lack them; glands rather small, accompanied by dark brown rings of 

 pigment which form almost a complete circle. Proboscis cylindrical, 

 with 10 smaU toothlike subequal papillae. 



