668 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



Entalophora proboscideoides Smitt, 1872 



Plate 70, figs. 8 and 9 



Entalophora proboscideoides Smitt, 1872:11. 



Entalophora proboscideoides, Canu and Bassler, 1928:160. 



Entalophora proboscideoides, Osburn, 1947:4. 



Zoarium erect, slender, branching widely, the stem composed of 6 to 

 8 very elongate tubules; the embedded tubules about 0.13 mm in di- 

 ameter and the peristomes, which open on all sides of the stalk, about 

 0.10 mm. The longest peristomes are about 0.50 mm, perforated and 

 lightly wrinkled like the embedded tubules. 



The ovicell is simple, a distinct elliptical swelling of the distal end of 

 a long tubule, 0.55 mm long by 0.35 mm wide, thickly perforated. The 

 peristome is terminal, bent I'orward sharply, the aperture transversely 

 elliptical, 0.13 by 0.06 mm. 



Described by Smitt from west of the Tortugas Islands, Florida, at 

 68 fms. Recorded by Osburn (1947:4) from 8 stations along the 

 southern shore of the Caribbean Sea (Hancock Atlantic Expedition, 

 1939), and by Canu and Bassler (1928:160) from the Pliocene of 

 Bocas Island, Panama. Our one ovicelled specimen appears to agree in 

 all details with those from the Caribbean Sea. 



Hancock Station 457-35, Secas Islands, Panama, 12 fms. 



Entalophora capitata Robertson, 1900 



Entalophora capitata Robertson, 1900:328 (Plate 21, fig. 12 only); 



1910:257. 

 Entalophora capitata, O'Donoghue, 1923:13. 

 Diaperoecia capitata, O'Donoghue, 1926:22. 



Dr. Robertson's 1900 description is practically worthless as she con- 

 fused this form with another species which Borg has since described 

 (1933:325) as Heteropora pacifica alaskensis. In 1910 Robertson cor- 

 rected the error and based her re-description on the specimen from which 

 figure 12 of her former account was taken. O'Donoghue in 1926 placed 

 the species under Diaperoecia, where, if only the nature of the ovicell 

 is considered, it would seem to belong. The species has not appeared in 

 the Hancock collections and I am unable to form a definite opinion. 



Robertson's 1910 description is as follows: 

 "Zoarium arising from a flattened or encrusting base and growing from 

 5 to 8 mm in height. Zooecia tubular, uniting in a short, stout column 

 terminating in a broad somewhat rounded head ; distal ends free, usually 

 extending for a considerable distance beyond the surface of the colony. 



