14 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



Grassimarginatella tuberosa (Canu and Bassler), 1928 

 Canu and Bassler 1928:21 (Aplousina tuberosa). Osburn 1940:357 

 (Aplousina). Hastings 1945 : 85. 



Dr. Hastings in her excellent review of Crassimarginatella places 

 A. tuberosa in this genus for reasons which appear to be perfectly sound. 

 The ovicells though very short and incomplete are definitely hyperstomial 

 and the avicularia, which are as large as the zooecia, are similar to those 

 of other species of the genus. 



Canu and Bassler record the species from the Gulf of Mexico, the 

 Straits of Florida and north of Cuba. 



Distribution. — Station A42-39, 7 miles N of Margarita Island, 

 Venezuela at 1 7 to 22 fms. 



Genus GOPIDOZOUM Harmer 1926 

 Gopidozoum tenuirostre (Hincks), 1880 

 Hincks 1881 : 70 (Membranipora tenuirostris). Canu and Bassler 1928: 

 31 (Callopora). Marcus 1937:48. 



The species is found around the world in warmer waters. Canu and 

 Bassler report it from the Gulf of Mexico, east of Yucatan and the 

 Straits of Florida. Marcus lists it from Santos Bay, Brazil. 



Distribution. — Stations A32-39, A42-39, and At505. These stations 

 place the locations at Coche, Margarita, and Aruba Islands at 22 to 23 

 fms. 



Genus PYRULELLA Harmer 1926 

 Pyrulella tubulata Hastings, 1930 

 Hastings 1930:709. 



This species was described from the Galapagos and recorded also for 

 Gorgona, Colombia. Our single specimen, which encrusted a small 

 branch of a coralline alga, agrees with Miss Hastings' description and 

 figures in every detail, except that the foramen of the ooecium is not quite 

 as large and is a little more distal in position. However, I have seen the 

 same variations in specimens from the type locality, Galapagos. The 

 arrangement of the spines, the nature of the zooeciules and the dorsal 

 processes for attachment are in exact agreement. The present record 

 extends the range to the Atlantic. 



Distribution. — Station At505, Aruba Island at 23fms. 



