the Zoophytes of South Devon and South Cornwall. 79 



stem. Immediately below the spiral a wide opening (PI. VI. 

 fig. 3, y) leads into the tubular passage by which the embryos 

 make their escape, which bends upwards within the capsule 

 and terminates in a circular orifice near the top (PI. VI. fig. 3, a;). 

 The gonophores, which are numerous, form an elongated mass 

 nearly filling the cavity of the gonotheca ; the ova seem to be 

 discharged successively from the uppermost, and to pass into 

 the planule stage while lying free in the capsule. The em- 

 bryos, when mature, make their way by means of their cilia 

 towards the upper extremity, enter the tubular passage at x^ 

 and make their escape into the water at y (PI. VI. fig. 5). 



If the external tubular orifice of an ordinary Campanularian 

 capsule were reversed, and drawn within the cavity, so as to 

 project into it instead of projecting from the summit into the 

 water, and were then bent round and upwards on one side, 

 we should have the very form which is characteristic of this 

 species. A slight modification of structure has resulted in the 

 production of a most exquisite shape. 



Hah. Salcombe Bay, on stones &c. ; not uncommon. 



Genus LovENELLA, Hincks. 

 L. clausa, Lov^n. 



On small stones, dredged off" the Oar Stone, at the entrance 

 to Torbay, in about 10 fathoms ; Salcombe Bay, abundant, 

 especially on shells of Turritella communis. 



When the genus Lovenella was first characterized, I was 

 only acquainted with the trophosome ; but in May I procured 

 specimens at Salcombe with gonothecge, and was able to study 

 the gonozooid, and so complete the diagnosis. The reproduc- 

 tive zooid is medusiform, and bears a general resemblance to 

 that of Clytia Johnstoni ; but there are important differences 

 in the number and position of the marginal bodies and in the 

 tentacles. The following should be added to the generic cha- 

 racter as given in my ' History of British Hydroid Zoophytes/ 

 vol. i. p. 177 :— 



Gonothecce home on the stems and producing free medusiform 

 zooids. 



Gonozooid. — Umhrella (at the time of liheration) glohose ; 

 manuhrium shorty with a simple orifice; radiating canals 4 ; 

 marginal tentacles of two hinds — 4 in connexion with the ra- 

 diating canals J of which two only are fully developed at the time 

 ofhirth, springing from non-ocellated hulhous hases, 4: interme- 

 diate, of smaller size, without hulhs, slightly clavate, tvith 

 thread-cells only towards the extremity (?) ; lithocysts 4, one of 



