The Bryozoa of the Tortugas Islands, Florida. 



197 



Fig. 8 



is brief and his figure (pi. 4, fig. 102) does not show the avicularium nor the 

 spicules, so I include it in the above synonymy with some doubt. I have 

 received from Professor A. E. Verrill a fine, erect, convoluted, bilaminate 

 colony taken on the west coast of Florida. Levinsen (1. c, p. 183) records 

 the variety lahiata from Jamaica and my Florida specimens agree fairly 

 closely with this variety. 



Thalamoporella granulata Levinsen. 



Levinsen, 1909, p. 188. 



In the drift were found several dead 

 specimens incrusting shells and calcareous 

 algae. The sinuated character of the ori- 

 fice with the strong lateral denticles; the 

 nearly equal opesiulae reaching the mar- 

 ginal wall and with granulated edges; 

 the dorsal opesiular outgrowths; the 

 granulated character of the zooecial walls ; 

 the form of the large, spatulate avicularian 

 mandible, and the character of the spicules, all approach closely to T. 

 granulata. The only difi"erence to be observed is in the basal portion of the 

 avicularian chamber. When completely calcified this structure becomes 

 closed by a calcareous lamina up to the hinge denticles of the mandible, 

 leaving only two openings similar in appearance to the opesiulae of the 

 ordinary zooecia, except that they are much smaller and are removed from 

 the lateral wall. 



Thalamoporella falcifera (Hincks). 



HiNCKS, 1880&, p. 380 {Steganoporella rozieri, form falcifera) . — Levinsen, 1909, p. 186. 



A single specimen of this species, which is distinguished by the falcate 

 mandible of the avicularium, was taken in shallow water growing on algae. 

 Apparently this species grows only on algae, if one may judge from the 

 comparatively small number of records. It has a wide distribution and is 

 recorded from Campeche Bank, Yucatan; Java Sea; Geographe Bay, Aus- 

 tralia, and from latitude 23° 30' N., longitude 40° W. 



Thalamoporella granulata Levinsen. 

 The variety in which the avicularium 

 chamber is closed basally, except for two 

 opesiulae. 



Genus Savignyella Levinsen, 1909. 



Savignyella lafontii (Audouin). 



Audouin, 1826, p. 242 {Eucratea lafontii). — Jelly, 1889, p. 93 (synonymy under 

 Eucratea lafontii). — Norman, 1909, p. 295 (Catenaria lafontii, later synonymy 

 and discussion of relationships). — Waters, 1909, p. 131 {Catenaria lafontii, 

 later synonymy and discussion of generic name). — Levinsen, 1909, pp. 213 

 (note) and 274 {Savignyella, new genus and reasons for change in generic 

 name). 



This widely distributed tropical species is abundant about the islands 



from low water down to 10 fathoms on shells, piles, and sponges, in company 



with Amathia, Bowerbankia, etc. Ooecia with eggs in various stages of 



