191 1.] N. Annandale : Ctenostomatous Polyzoa. 197 



(i) There are no parietal muscles at the tip of the zooecium 



(pi. xiii, fig. 5) ; 

 (it) both the 3'oung and the adult zooecia are quadrate ; 

 {Hi) young zooecia frequently bear stolon-like processes and 



buds near the distal end ; 

 (iv) the growth of the zoarium is perhaps as a general rule 

 somewhat more irregular, particularly as regards the 

 production of lateral basal buds. 



Victor ella pavida occurs in brackish and occasionally in fresh 

 watei in England, Belgium and Germany. It has also been 

 reported from the littoral zone of the sea in Europe and is stated to 

 have been found in Australia. 



Victor ella hengalensis , iVnnandale. 

 (PI. xiii, figs. 3, 7 and 8.) 



This form is distinguished from V . pavida mainly by its more 

 luxuriant and irregular growth and b}' the fact that the distal end 

 of the adult zooecium is usually circular in cross-section. Its zoa- 

 ria have as a rule the appearance of a thick fur coating the roots 

 and stems of grasses, etc. The swellmg at the base of adult zooe- 

 cia is never very large. 



V. bengalensis has been found at various places near the coast 

 of Bengal and Madras, as a rule in brackish but occasionally in 

 fresh water. 



Victor ella symhiotica, Rousselet. 



(PI. xiii, fig. 6.) 



Rousselet, P.Z.S., 1907 (i), p. 255, pi. xv, figs, y , 8. 



V . symhiotica is distinguished by the following characters : — 

 {i) The swelling at the base of the adult zooecium is very 

 small and inconspicuous, the whole of the zooecium 

 being almost cylindrical and practically vertical ; 

 (n) distal buds are produced very sparingly ; 

 {Hi) the distal end of the zooecium is always nearly circular 



in cross-section ; 

 {iv) the lateral basal buds are very often suppressed. 



V. symhiotica was originall}^ described from Lake Tanganyika 

 and has more recently been taken by Mr. C. L. Boulenger and 

 Dr. Cunnington in the salt-lake Birket-el-Qurun in Egypt. I have 

 examined specimens from both localities. 



Family HIvSLOPIIDAE. 



This family is easily distinguished by its flattened and adherent 

 zooecia. The structure of the polypide differs considerably from 

 that of any Paludicellid genus, its most characteristic features 

 being the presence {i) of a relatively large and practically spherical 



