50 FAUNISTIC NOTES. 



the spring and early summer, it seems probable tliat the hydroid grows 

 in large numbers somewhere in the neighbourhood, and it is curious 

 that it should be so seldom taken. 



Medusie were very late in appearing this season. Daring January 

 not a single one was seen, and only one or two Leptomedusa^ were 

 taken occasionally in the latter half of February. It was not until the 

 middle of March that they began to be met with in any numbers, when 

 the tow-nets contained a good many specimens of the. Anthomedusa, 

 Amjyhicodoji amphiplcurus of Haeckel (March 15th and onwards), each 

 having numerous medusa buds springing from the base of the tentacle 

 bundle. A few specimens of Corymoiyha nutans (Stcenstrupia rubra) 

 also appeared about this time. Leptomedusa? {riiialidiurii sp.) were 

 still found in small numbers, but were not plentiful. Towards the end 

 of March they became numerous. 



During April Ani2)hicodon generally showed gonads developing on 

 the manubrium, and in May (first seen May 9th) the young hydra form 

 was found inside the umbrella. 



At the beginning of April two species of Tiaropsis, which will be 

 discussed in detail by Mr. Garstang, were present, and the larger 

 species continued to be taken, the specimens gradually increasing in 

 size, until the end of May. Sarsia pulchella and Margclis [Boiigainvillia) 

 ramosa, L. Agassiz, both of large size, were fairly common during JMay. 

 Specimens of liathkea odopundata were also taken during the same 

 month. 



From May 21st onwards, medusffi of the Phialidium group, bearing 

 the parasitic Ilalcampa sp. inside the umbrella, were common. 



The first Ephyra was observed on February 19th, but Ephyrae did 

 not become plentiful until the beginning of March. 



A month later only Ephyrae of the largest size were taken, and 

 on May 28th the first fairly grown Aurelia (about 3 in. diameter) 

 was seen. 



On April 29th a small specimen of Chrysnora isosceles (about | in. 

 diameter) was taken, and towards the end of May fair-sized specimens 

 of this medusa were common. 



The Lucernarian Depastrum cyathiforme, which has been taken twice 

 before at Plymouth,* once at Drake's Island and once under liame 

 Head, has been found on two occasions this year; on February 12th 

 on the shore below Mount Edgcumbe, and on May 15th below Mount 

 Batten. 



Bolina hydatina, referred to by Mr. Garstangt as having been noticed 

 during May, 1892, and again in May, 1894, but as being apparently 



• This Journal. Vol. iii. p. 216. 

 t This Journal. Vol. iii. p. 216. 



