426 Leuckart: Bericht üb, d. Leistungen in d. Naturgeschichte 



twice dichotomously dividing before they reach the marginal vessel ; 

 a marginal tentacle opposite each branch ; ocelli conspicuous. 



Gen. Geryono p sis. Umbrella hemispherical ; ovaries four, 

 clavate, conspicuous on the subumbrella in the course of the four 

 simple radiating vessels ; margin of umbrella with numerous short 

 tentacula; stomach at the extremity of a short peduncle, terminating 

 in four large fimbriated lips. 



Gen. Slab beria. Umbrella campanulate ; ovaries four, linear, in 

 the course of the four simple gastro-vascular canals ; peduncle pro- 

 boscidiform, highly extensile, oral orifice circuiar ; a marginal tenta- 

 cle springing from an ocellated bulb , and terminating in a coloured 

 globular body, placed opposit each af the gastro-vascular canals. 



Gen. Lizzia. Umbrella spherical or campanulate; ovaries in 

 the form of four lobes , on the sides of the short peduncle, margin 

 of the umbrella with eight unequal, Compound, tentacular bulbs, all 

 tentaculiferous , the four layer opposite the four radiating, simple, 

 gastric vessels; stomach shorter than the subumbrella; mouth with 

 four simple or ramifying tentaculated lips. 



Gen. M deria, Umbrella globose ; radiating vessels four, 

 simple; four niarginal tentacles opposite the four simple vessels; 

 ocelli conspicuous; peduncle inflated, balloonshaped, contracted below 

 and terminating in four lanceolate lips. 



Gen. Eup hys a. Umbrella globose inflated; ovaries in the 

 base of a flask-shaped peduncle, with a simple orifice at the end of 

 a proboscidiform stomach; vessels four, simple, joining the gastric 

 vessel opposite four conspicuous ocellated tentacles , from each of 

 which arises a short, slender, recurved cirrus, and from one a sup- 

 plementary long tentacle. 



Gen. Steenstrupia. Umbrella conical, apiculate; apex con- 

 nected by a cord with the subumbrella; four marginal elongated glands 

 opposite the foür simple radiating vessels ; a single tentacle develo- 

 ped from one of the glands only, peduncle proboscidiform, with a 

 simple round orifice. 



Später wird von Forbes undGoodsir (Transact. Edinb. Soc. 

 T. XX. p. 311. PI. X.) noch ein Kachtrag zu diesen Arten geliefert: 

 Oceania ducalis , Slabberia calenala, Flancia (n. gen.) gracüis, lUp~ 

 pocrene (Bougaintillia) pyramidata, H. crucifera^ H. simplex , Thau- 

 mantias undulata, Th. conßuens. Das neue Sarsiadengenus Plancia trägt 

 folgende Diagnose: Umbrella hemisphaerical ; radiating vessels four, 

 simple; no conspicuous genital glands; two long marginal tentacles 

 and numerous intermediate rudimenlary tubercles , all with ocelli at 

 their bases; stomach at thq cnd of & very loDg; extensile, cyliadrical 



