12 DISCOVERY REPORTS 



the minimum (February) about i8° C. A species like Stephanomia rubra, which leaves the surface 

 waters of the Mediterranean when the temperature rises above about 21 ° C. and descends into deeper 

 cooler water, appears to be living in the Red Sea in an environment that it can only just manage to 

 tolerate. It is therefore interesting to find that the new records given in Table 1, show at least two 

 dozen species of Siphonophores from the Red Sea. 



Table 1 . List of Chondrophora and Siphonophora taken in the Red Sea. (New records) 



Explanation of symbols : 



x = present, stage and numbers not recorded. 

 — = absent. 

 P=polygastric stage. 

 E = eudoxid stage. 



x \ P\ P 2 , P 3 = number of specimens. 

 c = common. 

 2 = both stages. 



L = larval stage. 



The almost cosmopolitan Chelophyes appendiculata has not, so far, been taken there, though its 

 close ally C. contorta is common. The evidence for the occurrence of Agalma elegans depends on the 



