460 PROCEEDINGS OF THE ACADEMY OF [Junc% 



with fine granules arranged in oblique rows and appearing as somewhat 

 irregular serrations at the edge. 



Jaws black or deep lorown and opaque, forming a continuous but 

 irregular ring just caudad of a circle of 18 obtuse lobes which lie at 

 extreme the end of the fully protruded proboscis, and when retracted 

 cover the jaws in somite XXIII. One princii)al jaw on each side and 

 dorsad, the left one bearing two long hooked spines shaped like the 

 venom fangs of serpents; the right one bearing in addition 2 or .3 

 smaller but similar spines on the medial side. In the dorsal interval 

 between the principal jaws are 14 or 15 smaller accessory ones arranged 

 in an irregular transverse band ; they are of inconstant form but each 

 bears a pair of, or even 3, hooked teeth on a rather stout base. The 

 ventral distance between the principal jaws is more than twice the 

 dorsal, and is occupied by a fairly even and continuous row of 2S to 30 

 small jaws of various sizes and forms, some being c^uite rudimentary. 

 As a rule each bears a single claw-like hook directed, as are the others, 

 caudad on an irregular orbicular base having a pair of anteriorly di- 

 rected, divergent processes. No longitudinal series of accessory jaws 

 is present. 



A low muscular fold runs along the mid-dorsal line of the pharynx 

 from its cephalic attachment to the predental lobes, but does not 

 involve a complete folding of the pharyngeal walls as in Goniada dis- 

 torta. The proboscis papillre' are all of one kind, elevated mammili- 

 form, the enlarged somewhat pyramidal bases much crowded in the 

 retracted organ and the teat-like summits pointed and slightly curved. 

 They measure .014 mm. in height, and .009 mm. in diameter of base. 



Color a general gambose yellow, lighter in the furrows and on the 

 contiguous surfaces of parapodia and in the head region, and modi- 

 fied posteriorly by the presence of the eggs, which crowd the sides of 

 the somites and the parapodia. The anterior region, exclusive of 

 the head and a few somites, is very dark and opaque from the presence 

 of an abundant purplish-brown pigment deposited in a narrow zone 

 around each somite, which broadens above and below each parapodium, 

 and affects the terminal parts of the cirri and, to a less degree, the setig- 

 erous lobes. The anterior end is iridescent x^dth greenish and bluish 

 reflections. A curiously constant feature is a ventral series of minute 

 but conspicuous black spots, situated in the median line of each inter- 

 segmental furrow of the posterior region, at the beginning of which 

 they appear abruptly. 



Sagami Bay, 3.695, 190 fms., type and one other specimen; North 

 of Sendai Bay, 3,771, 62 fms., 4 specimens of smaller size. 



