COMPLETE HARTMAN! POLYCHAETES FROM CALIFORNIA 127 



third has 5 similar spines; more posterior segments have rostrate hooks 

 in transverse series. The cephalic plaque has long, straight nuchal organs ; 

 eyes are absent. The pygidium is surrounded by 18 lobes in a circle, all 

 about equally short and triangular in shape (PI. 33, fig. 3). There are 

 6 anteanal segments (PI. 33, fig. 2). 



Typical neuropodia have rostrate hooks (PI. 33, fig. 4) in which the 

 large fang is surmounted by 4 teeth (PI. 33, fig. 5). 



Family AMPHARETIDAE 



Genus Ampharete Malmgren, 1866 



Type A. acutifrons (Grube) 1860 



Ampharete labrops, new species 



Plate 34, figs. 1-4 



Collections. The type is selected from VELERO IV Sta. 6694, 

 taken 2 mi from Santa Barbara Point light, in 30 ft, from a bottom of 

 fine sand with kelp. Others are from shallow shelf bottoms of southern 

 California. 



This is a small species; length of an ovigerous adult, posteriorly not 

 quite complete, is 14 mm of which the thorax measures 10 mm; width 

 in the thorax or widest part is 3 mm. The oral tentacles are pinnately 

 divided and numerous, as is typical of the genus. The prostomium is 

 subquadrate, wider than long and slightly prolonged forward at its 

 median frontal margin. A pair of small, subcircular black eyespots is 

 located near the postectal margins and can be seen by pushing the 

 branchiae to the side. The middorsum of the body is smooth, the trans- 

 verse segmental lines not conspicuous ( PI. 34, fig. 1 ) . 



The upper lip is large, broadly trilobed and ventrally bordered with 

 many small black eyespots, best seen in ventral view (PI. 34, fig. 2). 

 Branchiae number 4 pairs; they are long- and cirriform (PI. 34, fig. 1) 

 and all of one kind ; they extend forward for a distance nearly equalling 

 the thoracic length. They are inserted so that the 2 innermost are in 

 contact medially, and the bases of the four are in two oblique series such 

 that the two anterior are outermost, and the two posterior are innermost. 



Paleae form conspicuous fascicles at the sides of the buccal region. 

 They project forward and laterally, numbering about 11 on a side. All 

 are similar and larger than any of the notopodial setae farther back. 

 Each is long, straw-colored, tapers distally and is straight for most of 

 its length but flexible and whiplike in its distal part (PI. 34, fig. 3) 



