478 PROCEEDINGS OF THE ACADEMY OF [Juiie, 



to 23 on XX, the last thoracic somite. The thoracic micini spread in a 

 fan-shaped figure; they are colorless or pale brown, long, slender, with 

 curved somewhat striated stem, increasing slightly in diameter to 

 the surface of the body, then suddenly contracting to a narrow neck 

 beyond which even more abruptly expanding into the remarkably bird- 

 like head, with a blunt beak and a crest of 5 or 6 finely divided trans- 

 verse rows of very numerous teeth, together having a nearly spherical 

 form as viewed from above. The abdominal uncini numljer about 35 

 in the anterior somites, and are arranged in a marginal row about the 

 torus, to the center of which the slender ligaments converge. They 

 are nearly colorless, with short, broad, nearly triangular bases, upon 

 which the only slightly expanded head is sessile; rostrum prominent 

 and above it 2 or sometimes 3 transverse rows of numerous spines. 



Station not given on label. 



There is considerable conflict between the several published accounts 

 of T. glacial is i\Igrn., but the present species differs ilecidedly from 

 those described from typical Eur(jpean localities in the entire absence 

 of eyes, the wider cephalic wings, constancy of 2 pairs of gills, the form 

 of the uncini and greater number of slender setse. 

 Terebellides stroemi Sars. 



The typical variety of this nearly cosmopolitan species occurs in Sen- 

 dai Bay, 3,767, 14 to 18 fms., and probably in Suruga Bay, 3,724, 

 20 fms. 

 Var. japonicanov. 



All of the specimens of Terebellides t^ken in Sagami Bay differ from 

 the typical variety in having a much smaller number of prostomial ten- 

 tacles and wider margins to the slender setse. They have a length up 

 to 70 mm. The proportions of the gill lobes vary considerably; and 

 in one example from 3,704, the posterior lobes are undeveloped. 



Sagami Bay, 3.695, 175-190 fms., types; 3,698, 153 fms.; 3,704, 

 94 fms.; 3,738, 167 fms. 



AMPHARETID^. 

 Amphicteis japonica Mcintosh. 



Two fine specimens taken at station 3,771 are much larger than those 

 originally described by Mcintosh from south of Yedo; they measure 

 45 mm. in length. The branchise are perfect and are round as in 

 A. gunneri, not flattened as doubtfully stated by Mcintosh; the uncini 

 are also somewhat narrower than is figured for the types, but other 

 specimens conform exactly to the originals in this respect. The tube is 

 tough and parchment-like, and covered with a thick coating of fine silt. 



