2S2 PROF. MARSHALL AND MR. G. H. FOWLER ON THE 





a. 



b. 



c. 



d, 



e. 



Var. a. 





232 



172 



120 



69 



41 



79 



44 



39 



27 



19 



9 



13 



Length of rachis 



188 



133 



93 



50 



32 



66 





Oo 



QK 

 OO 





on 



±o 



zo 





32 



27 



30 



20 



13 



22 



Diam. at junction of rachis and 

















27 



25 



27 



12 



10 



8 



Average distance apart of polypes 



1-5 



1-5 



1-5 



1-8 



1-6 



2-5 





0-7 



0-5 



07 



0-8 



0-5 



1 



Family ii. Lititariid^:. 



Genus Lituaria, Valenciennes. 



Lituaria phalloides, Pallas. (Plate XXIII. figs. 19-21.) 



Of this species Kolliker* notes that though it is probably 

 widely distributed in the Indian Ocean, yet the actual number 

 of recorded specimens is very small. Kolliker's description is 

 drawn up from a single specimen in the Paris Museum from 

 Sumatra, aud during the voyage of the ' Challenger ' a single 

 example only was obtained, from Japan f. 



In Dr. Anderson's collection there are eleven adult specimens, 

 ten from tbe Andaman Islands, and one from the Mergui Archi- 

 pelago, and nine young specimens from the Mergui Archipelago. 



The adult specimens are all much alike; the majority are 

 truncated at the upper end of the rachis, but two others are 

 perfect, and bear small polypes at the extreme end. The speci- 

 mens agree closely with the description given by Kolliker, the 

 only points of difference of any moment that we have noted 

 being the following : — 



There is no line of boundary between the rachis and the stalk. 

 The autozooida (polypes) extend lower down the rachis than the 

 siphonozooids, but these lower ones are of very small size. There 

 is in many specimens a very obvious plane of symmetry, the au- 

 tozooids gradually increasing in size from the dorsal to the 

 ventral surface. The siphonozooids do not cover the whole 

 surface of the rachis between the autozooids, but are very 

 distinctly arranged in rings around the latter. The cups 



* Kolliker, op. oit pp. 313-316. 



t Zool. Chall. Exp., Report on the Pennatulida, p. 32. 



