118 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



lapagos, 30 fms ; 299, San Jose del Cabo, Lower California, Mexico, 82 

 fms; 2167, Dewey Channel, San Eugenio Point, Mexico, 23 fms; 2160, 

 and 1250-41, 1 mile south of San Benito Islands, Mexico, 44 to 49 fms. 

 The known vertical distribution is from near shore down to 118 fms. 



Cellaria veleronis new species 

 Plate 13, fig. 2 



Zoarium erect (to 25 mm in height) ; sparingly dichotomous, the 

 branches curved at their proximal ends so that the bifurcations are shaped 

 like "tuning forks"; internodes slightly sinuate, slender and elongate 

 about 0.50 mm wide and 5 or 6 mm long), consisting of 4 to 6 series of 

 zooecia. 



The zooecia measure about 0.65 mm long by 0.30 to 0.35 mm wide, 

 shorter and wider in the fertile zooecia ; cryptocyst deep, flat in the mid- 

 dle area but on either side of this is a curved ridge which extends forward 

 to opposite the aperture. The front is smooth or nearly so and shining. 

 The aperture is semi-circular, with a raised proximal lip of the cryptocyst 

 and a pair of strong proximal denticles. The avicularium is about as large 

 as a zooecium ; the rostrum broadly triangular at the base but somewhat 

 elongate and attenuate distally, the thin edges raised to form a groove; 

 at the proximal end these edges turn inward at right angles to form the 

 hinge denticles, but leave a distinct sinus between them. The mandible 

 is similar in form to the rostrum, even to a proximal projection which 

 fits into the sinus. 



The fertile zone of the internode is swollen, the ooecia not conspicu- 

 ous and opening by a broad lunate aperture on the front. 



The avicularium in this species appears to be the exact counterpart 

 of that of C. tecta Harmer (1926:340), but the ooecium is diflferent, the 

 zooecial front is not granulated and it is a smaller and more slender 

 species (the internodes of tecta measure 0.80 mm wide by 13 mm long). 



Named for Captain Allan Hancock's yacht "Velero III" in which 

 the collecting expeditions were made. 



Type, AHF no. 29. 



Type locality, Hancock Station 155-34, Albemarle Island, Galapagos, 

 0°16'45''S, 91°22'52''W, 50-60 fms. Also taken at Stations 142-34, off 

 Clipperton Island, 65 fms ; 310-35, off Bindloe Island, Galapagos, 15 fms ; 

 788-38, SE of Daphne Major Island, Galapagos, 55 fms ; 795-38, Suli- 

 van Bay, James Island, Galapagos, 50-60 fms. 



