﻿200 The Philippine Journal of Science 1914 



sting of L. mayeri sp. nov., a closely related form, while unpleas- 

 ant is not dangerous. I hope to be able to report more fully on 

 this matter in the future. 



Order SEMiEOSTOME^E 



Genus AURELLIA Peron and Lesueur, 1809 

 Aurellia labiata Chamisso and Eysenhardt. 



The margin is divided into 16 velar lobes. The bell margin 

 projects downward from the subumbrellar side as a velumlike 

 membrane, forming a fold between each 2 sense organs. The 

 tentacles and marginal lappets have moved a considerable dis- 

 tance up the sides of the exumbrella. The subgenital ostia are 

 very small. 



This seems to be a rather widely distributed form in Phil- 

 ippine waters, as Mayer reports it from Masbate from specimens 

 in the Albatross collection and we have specimens from Taytay, 

 Palawan, and Manila Bay. We have 4 specimens in our collec- 

 tion, 2 collected by Dr. R. P. Cowles in Taytay, Palawan, and 

 2 from Pasay Beach, Manila Bay. They all show the 16 notches 

 in the bell margin, the velumlike subumbrellar membrane mark- 

 ing the true margin, and the very small subgenital ostia which 

 characterize A. labiata, so I have considered them as belonging 

 to that species in spite of rather marked individual differences 

 and differences in proportion as compared with other specimens 

 whose measurements are given by Mayer. 



The smallest specimen (D in the table) is relaxed, flabby, 

 and without definite shape. The bell is only 10 mm. thick at 

 the base of the mouth arms, and the whole medusa has the 

 appearance of having completely relaxed in death. The marginal 

 tentacles are very slender and flexible, and are from 12 to 15 

 mm. in length. 



In another specimen (B in the table), the bell thickness at 

 the base of the mouth arms is 25 mm. The material of the 

 umbrella has a very solid, stiff consistency, and is thick up 

 to the tentacle zone. It appears to be in a state of contraction, 

 and nearly all the marginal tentacles are tightly contracted. 

 The velumlike margin is here represented only by a very slight 

 fold which has the appearance of a line connecting the sense 

 organs. The thick bell with a solid consistency and the rounded 

 genital pouches and small ostia give it a resemblance to A. soli da 

 Browne. Owing to the condition of the specimen, it was impos- 

 sible to determine the arrangement of the sense organs, but 

 the 16 velar lobes show that the medusa is A. labiata. 



