474 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



of the zooecial cavity is an unusual character, usually deeper than long, 

 but the zooecia do not appear to be erected as they are in the Celleporidae, 

 as the frontal area is quite horizontal. The distribution of the numerous 

 communication pores over the whole surface of the lateral and distal 

 walls appears to be a unique character. 



The absence of ovicells and the nature of the aperture and frontal 

 appear to relate this genus most nearly to Watersipora in the family 

 Cheiloporinidae. 



The genus is named in honor of the "Velero III," Captain Allan 

 Hancock's yacht, in which ten years of dredging expeditions were carried 

 on, from Oregon to Peru and the Galapagos Islands. 



Veleroa veleronis new species 

 Plate 56, figs. 6-7 and Plate 55, fig. 11 



Schizoporella areolata, Robertson, 1908 :285. 



Zoarium encrusting. Zooecia large, 0.60 to 0.85 mm long by 0.55 to 

 0.65 mm wide and very deep, the cavity often deeper than long ; distinct, 

 without separating raised lines, the surface slightly inflated ; frontal 

 a tremocyst with numerous large pores and covered with a thick yellowish 

 ectocyst. The primary aperture is evenly rounded to the level of the large 

 cardelles, proximal to which is a broad rounded sinus about half the 

 width of the aperture, which measures about 0.25 mm in either direction. 

 The operculum is heavily chitinized, "leathery," without any definite 

 sclerites though the proximal tip of the "tongue" bears a thicker band 

 and there is also an indefinite thickened area near the center where the 

 muscle attachments are located far within the border (similar to their 

 position in Schizoporella and Gephyrophora). The primary peristome 

 is thin and low and appears to extend back only to the cardelles; the 

 secondary peristome is slightly raised, only a little thickened, and finely 

 granulated. No spines, no avicularia and no ovicells. The communication 

 pores are very numerous and are scattered thickly over the entire surface 

 of the lateral and distal walls. 



This species was first obtained at Santa Catalina Island by Dr. Alice 

 Robertson who identified it with the Lepralia areolata Busk, 1854, from 

 the Straits of Magellan. The surface appearance of Busk's species is 

 slightly similar, but in areolata the sinus is deeper and narrower, there 

 are conspicuous separating lines, and the zooecia appear to be much 

 smaller. It is possible that Lepralia areolata should be included in the 

 present genus, but the description is very incomplete and the species 

 apparently has never been recovered. 



