710 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



When the brood-chamber fills the central area the zoarium is "nearly- 

 conical," as shown in Busk's illustration (1875, PL 27, figs. 1 and 2), 

 but in the absence of the chamber the area is depressed and slightly 

 concave. The "cells" or zoids are often in short radial series of 3 or 4, 

 but frequently are irregularly quincunical. The "interstitial pores" or 

 cancellae are much less numerous than in other species and usually more 

 widely separated ; when young they are as large as the apertures but 

 later become partly closed, with a small central pore. The peristomes 

 project strongly and are somewhat flared ("mouth expanded") and 

 fimbriated with 2 to 5 marginal spines. The basal lamina is very broad 

 and turned upward at the edge, as shown in Busk's figure 2. 



The brood-chambers, 1 to 3 or 4 in number, are prominent, usually 

 coalesced to more or less fill the central area, but in one of our specimens 

 the 3 chambers are distinct; there are numerous pores in the ooecial 

 cover; the ooeciostomes situated more or less between the inner ends of 

 the rays, the aperture about the size of those of the zoids, the tube short 

 and very slightly flaring but without a distinct lip. 



The zoaria are all small, the largest slightly over 4 mm in diameter, 

 the peristome and ooeciostome about 0.10 mm. 



Busk described the species from the southern tip of South America, 

 Chonos Archipelago, Tierra del Fuego, Cape Horn and Chiloe, and 

 later added Tristan da Cunha. The Disporella spinulosa of Jullien was 

 dredged between the Falkland Islands and the Strait of Magellan. It 

 has also been recorded from Australia, Tasmania, New Zealand, the 

 Azores and Cape Verde Islands; O'Donoghue has recorded it from 

 Round Island, British Columbia. If these identifications are all correct, 

 the species has a very wide distribution. 



Hancock collections: not dredged, but taken in low tide collecting 

 by the writer at Palos Verdes near Los Angeles; by Miss A. E. Blagg 

 at Pescadero Point outside of Monterey Bay; and recovered from a 

 sunken buoy brought up from 45 fms, off Rocky Point, near Los Angeles, 

 all from southern California. 



Disporella hispida (Fleming), 1828 

 Plate 75, fig. 1 



Discopora hispida Fleming, 1828:530. 

 Discoporella hispida. Busk, 1875:30. 

 Lichenopora hispida, Hincks, 1880:473; 1884:207. 

 Lichenopora hispida, O'Donoghue, 1923 :15 ; 1926:28. 

 Lichenopora hispida, Canu and Bassler, 1923:203. 

 Lichenopora hispida, Osburn, 1923 :5D; 1933:18. 



