230 



HARGITT. 



[VOL. II. 



FIG. 5. 



single tentacle each, while the other three sets contained the 

 normal (at this stage) number, two. A point not shown 

 definitely in the figure is the fact of only four oral tentacles. 



In Fig. 5 is shown a specimen 

 with monstrously developed 

 manubrium, protruding beyond 

 the velum, and provided with but 

 two tentacles. In several speci- 

 mens similar enlargements were 

 noted, though not so pronounced 

 as in this, except in certain cases, 

 apparently pathological, in which 

 the entire bell was evaginated and 

 greatly shrunken, with the manu- 

 brium greatly enlarged. No account was taken of such 

 specimens, for they -were evidently due to conditions other 

 than those of health. It may be noted in this connection that 

 several specimens were found exhibiting similar vesicular or 

 pustular enlargement to those observed in connection with 

 accounts of Pennaria. Here is further evidence, if such were 

 necessary, that these enlargements, resembling distortions, 

 could not have been produced by the enlarged gonads, for in 

 the species under consideration the 

 sexual organs were as yet unde- 

 veloped. 



In Fig. 6 is shown in diagram an 

 aboral view of a condition found in 

 several specimens, in which there 

 seem to be secondary, peripherally 

 directed radial canals, extending 

 nearly half-way over the bell. As 

 this medusa has normally but four 

 such canals this is a well-marked 

 case of variation in the direction of a condition quite common 

 in Rhegmatodes and many trachomedusae. I regret that 

 none of the specimens to which I have had access are of 

 approximate maturity so that such incipient variations might 

 be traced forward to their perfection, in order to ascertain 



FIG. 6. 



