306 PROCEEDINGS OF THE ACADEMY OF [April, 



fathoms, soft green mud; 4,524, 4,525, 4,526, same locality, 204-239 

 fathoms, soft gray mud ; 4,574, off Cape Colnett, 30° 35' N., 117° 23' W., 

 1,400 fathoms. 



t &oniada brunnea Treadwell. 



V/ Goniada brunnea Treadwell, Bull. U. S. Fish Comm., 1906, p. 1174, figs. 

 67-69. 



Several excellently preserved specimens of this species occur in the 

 collection and permit some minor additions to Tread well's description. 

 The largest individual is 111 mm. long with a maximum width of body 

 in the anterior region of 1.8 mm. and between the tips of theparapodia 

 of about .^mm., the corresponding measurements of the posterior region 

 being 2.6 and 4.2 mm. 



Prostomium shaped as in Treadwell's figure, composed of from 

 seven to nine ecjual rings above the base, the higher numbers in 

 small specimens. As Treadwell supposed from the appearance of 

 his, in this respectimperfectly preserved, specimen, the apical tentacles 

 are biarticulate, the larger basal joint clavate and the minute terminal 

 piece retractile. Parapodia are as figured by Treadwell, but his 

 figiu-e 68 is inverted. Notopodia with set® appear abruptly at XLR' 

 or XLV. Treadwell says at L. The distinction between the two 

 regions of the bod}^ is never sharply indicated. Usually the anterior 

 region is of a paler color and neural eye-spots, having the form of 

 short dashes, and swimming setae begin at about LVL Pygidiimi a 

 minute obliquely truncate cylinder with a somewhat thickened mar- 

 ginal welt and no cirri in place. The color is pale brown or yellowish- 

 brown, either with.paler annulations at the furrows or dusky markings, 

 paling to clear yellow posteriorly. 



No specimen has more than a small portion of the proboscis pro- 

 truded and the jaws were seen by dissection. The large jaws are 

 black, with four large, stout, clawlike teeth and apparently no small 

 teeth. Dorsal arc of small jaws absent. Ventral arc of nine small 

 black jaws apparently all bidentate with bilobed bases. Chevron 

 jaws on the largest specimen eighteen, on a very small one nine on 

 one side ten on the other and on other specimens fourteen or fifteen. 

 Soft papillae in a circle of eighteen. The surface of the proboscis 

 appears smooth under a pocket lens, but when more highly magnified 

 is seen to be thickly covered with minute hemispherical papillae with 

 an asymmetrical basal pore. 



Stations 4,366, off Point Loma Lighthouse, vicinity of San Diego, 

 176-181 fathoms, green mud; 4,381, off South Coronado Island, 

 618-654 fathoms, green mud; 4,457, off Point Pinos Lighthouse, 



