168 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



absent, is present on the outer angle and 2 or 3 small, weak spines on 

 each side toward the distal end. As O'Donoghue indicates (1923:23) 

 under his variety spinosa, there may be "a large number of more developed 

 spines," but apparently this condition is not limited to "a much more 

 slender and delicate habit of growth." Occasionally the spines may be 

 entirely wanting. 



The ovicell is characteristic of the genus, large, rounded and promi- 

 nent with surface striations, and there are no avicularia. 



Robertson indicated the range from Alaska to San Francisco, Cali- 

 fornia, and O'Donoghue records it from numerous localities in British 

 Columbia and Puget Sound. 



Hancock Station 1490-42, Cape Arago lighthouse, reef and bight, 

 Coos Co., Oregon, intertidal. Common at Dillon Beach, California, 

 Menzies, collector, shallow water. 



/fe'j Dendrobeania longispinosa (Robertson), 1905 

 Plate 25, figs. 4 and 5 

 Beania longispinosa Robertson, 1905 :277. 



In spite of the occasional small irregular fenestrae and the general 

 looseness of connection of the zooecia, this species belongs in the genus 

 Dendrobeania for the following reasons: the distal ends of the lateral 

 and basal walls are thickened and calcified and contain the large single 

 distal and two disto-lateral rosette plates, as in Dendrobeania, and the 

 ovicell is exactly like that of other species in this genus. Robertson indi- 

 cates that the ovicell is small, but it is only small in comparison with the 

 size of the zooecia, it measures 0.30 mm in width by about 0.24 mm in 

 length, and it is striated in the pattern characteristic of the genus. The 

 long and heavy distal spines are situated rather close together and point 

 distally. The lateral spines, usually about 7 on each side, are strong, 

 curved over the opesia and so long that they may reach beyond the op- 

 posite side of the zooecium. The zoarium is irregular, recumbent, the 

 branches consisting of from one to six series of zooecia. There is no evi- 

 dence of tubular connections, such as occur in the species of Beania. 



Robertson had the species only from La Jolla, California, "in several 

 fathoms of water." 



Hancock Stations: 2158, north end of Ranger Bank off Cedros Is- 

 land, Lower California, 81 fms; 1187-40, off Bird Rock, Santa Catalina 

 Island, 31 to 40 fms; 1190-40, Anacapa Passage, 15 to 20 fms; 1271-41, 

 three-fourths of a mile southeast of Cat Rock, Anacapa Island, southern 

 California, 23 to 25 fms; 1896-49, Tanner Bank, 22 fms. 



