102 CATALOGUE OF THE ZOOPHYTES OF 



3. HYDRACTINIA, Van Beneden. 

 1. H. ECHINATA, Fleming. 



Johns. Brit. Zooph., 34, t. i., f. 4—6. 

 On old univalve shells from deep water ; frequent. 



4. CORYNE, Gcertner. 



1. C. LiSTERii, Van Beneden. 



Johns. Brit. Zooph., 41. 

 On Corallina officmalis and other sea-weeds, and on the sides 

 of rock-pools, between tide-marks ; not rare. Plentiful at 

 Bamborough. 

 The researches of modern zoologists show the probability of 

 several species of Ccrryne having been confounded under the name 

 oi pusilla (or glandulosa), but their characters and limits are very 

 badly defined, and require re-investigation. The common species 

 of our coast, which is here referred to the Syncoryna Listeiii of Van 

 Beneden, has the stem and branches smooth, or very faintly 

 wrinkled, for the greater part of their course; but they are 

 strongly annulated at the origin of each, as well as near the 

 head. The small branchlets are ringed throughout. Where the 

 annulations occur, the stem is generally a little constricted. The 

 heads are moderately small, with four or five imperfect rows of 

 tentacles. The medusoid young, obtained at Bamborough, agrees 

 with that figured by Dujardin for his Syncoryna decipiens, and of 

 Sars for S. Sarsii, but differs from what Mr. Gosse considers the 

 Medusoid of C. jmsilla. Dr. Johnston thinks this species is 

 probably the true C. imsilki., but Ggertner's figure, as copied by 

 Blainville, resembles rather C. ramosa, and I am not sure that 

 Lister's should not be referred to the same. The Syncoryna 

 pusilla of Van Beneden is a different and smaller species. 



2. C. RAMOSA, Ehr. 



Johns. Brit. Zooph., 42, t. vi., f. 4 — 7. 

 In rock-pools below the Spanish Battery, Tynemouth — » 

 Mr. R. Hoicse. 

 Dr. Johnston considers this to be the Tuhularia muscoides of 

 Linnaeus, an opinion which, I think, is open to doubt. Besides 



