FLORIDAN BRYOZOA. 19 



EXPLANATION OF THE FIGURES: 



Plate 1: 



Fig. 1 ; Crisia denticulata, in its lower part agreeing with the Crisia ebumea. 



The zooecia are here almost straight or only a little incurved, and their orifice is almost in a 

 level with the foreside of the stem. From the letter a we pass to the same letter in following figure. 

 " 2; The same stem continued. From the letter b, the figure is continued at the same letter in the follo- 

 wing figure. 

 » 3; The same stem continued. 



Here we see the zooecia at their tip more incurved, with their orifice more regularly in the midst 

 between those of the zooecia in the other row. At the same time the stem grows broader and attains 

 the more typical appearance of the variety. 

 » 4; A fragment of the back of the same stem. 



» 5; Another stem of the same species, with ocecia and with the zooecia more incurved and prolonged at 

 their tip. In the right part of the figure we see a branch more agreeing with the precedent figures. 



6; Diastoporu repens. 



Plate II: 



7 ; Idmonea atlantica in its slender form; Idm. jlexuosa, Pourt. 



8; The same stem, as seen from its back-side. 



9; Idmonea serpens (?) in a slender variety. At the base we see the colony, in its beginning. creeping as 



an Alecto. 

 10; The same stem, as seen from the left side. 



11; Crisina Hochstetteriana, as seen from the front side of the stem. 

 12; The same stem, as seen from the right side. 

 13; A part of the same stem, as seen from the back side. 



Plate III: 



14; Idmonea Milneana. Front view. 



15; A part of the same stem. Back view, more highly magnified. 



16; A part of another stem of the same species, with the tip dilated for the formation of an ooecion. 



17; A fragment of the lowest part of another stem of this species, with its radical tubes, growing upon a 



Myriozoum. 

 18; A fragment of a slender deep-sea-form of this (?) species. 

 19; The same stem, as seen from the back side. 

 20; Filisparsa Pourtalesii. Front view. 



21; The same, Back view, showing some of the zooecia opening themselves on the back side of the stem. 

 22; The same species. Natural size. 



Plate IV: 



23; Hornera galeata. Front view. 

 24; The same stem. Back view r . 



25; A tip of a branch of another stem. Back view, showing three ooscia crowded together and the hole 

 of a fourth one, which for the most part is broken away. 



