22 ALLAN HANCOCK ATLANTIC EXPEDITION REPORT 



the pores extended into short tubules, and measures 0.15 mm in breadth. 



Four colonies are represented in the collection, the longest being only 

 3 mm in length, but all in reproduction. All but one have the ancestrula 

 with a branch arising on its front, and only one is jointed beyond the 

 ancestrula. While scuta and spines are notoriously variable in this genus, 

 their nature in this species appears to preclude any possibility of relation- 

 ship to any of the other forms with a similar type of joint. 



Type.— AHF no. 4. 



Type locality. — Station At505, Aruba Island at 23 fms, four colonies. 



Genus GANDA Lamouroux 1816 

 Ganda caraibica Levinsen, 1909 



Levinsen 1909: 142. Osburn 1914: 192; 1940:387. 



This species is not known to occur elsewhere than in the Gulf of 

 Mexico and the Caribbean Sea. Levinsen in describing the species merely 

 states "West Indian material." Osburn records it from the Tortugas 

 Islands, Florida, and off Guanica Harbor, Porto Rico. The Hancock 

 collections extend the range to the southern coast of the Caribbean Sea. 



Distribution.—Stations A14-39, A18-39, At500, At504, At528, and 

 At529. These stations place the locations at Cape la Vela, Colombia; 

 Aruba Island ; Caledonia Bay, Panama and the Gulf of Venezuela at 

 11 to 71 fms. 



Family BicellaHellidae Levinsen 1909 



Genus BUGULA Oken 1815 



Bugula neritina (Linnaeus), 1758 



Osburn 1914: 186; 1927: 126; 1940:389. Hastings 1930:704. 



Generally distributed around the world in warmer waters. Its dark 

 reddish purple color often makes it a conspicuous object on the piles of 

 docks. As it is a shallow water species it is not often taken in dredging 

 below a few fathoms. Osburn recorded it from the Tortugas Islands, 

 Florida, from Curagao Island and at various localities in Porto Rico. 

 Hastings lists it from Colon, Panama. 



Distribution. — Stations A24-39, A28-39, and A42-39. These stations 

 place the locations at Cubagua and Margarita Islands at shore to 22 fms. 



