196 LEPTOSCYPHHXE. 



Family III. Leptoscyphidse. 



HYDROTHEC^E ovato-conic ; POLYPITES cylindrical, ivith a 

 conical proboscis ; GENERATIVE ELEMENTS produced in 

 the walls of the manubrium ; LITHOCYSTS wanting. 



Genus LEPTOSCYPHUS, Allman. 



Der. from XeTrros, delicate, and CTKU^OS, a cup. 



GENERIC CHARACTER. Stem single or branching, at- 

 tached by a thread-like stolon ; hydrothecce with an oper- 

 culum composed of convergent segments; polypites cylin- 

 drical, with a conical proboscis ; reproduction by free 

 medusiform zooids. 



Gonozooid: Umbrella (at the time of liberation] deep 

 bell -shaped or conical; manubrium of moderate size, pen- 

 dent from a conical projection from the roof of the umbrella, 

 the mouth with four short capitate tentacles ; radiating 

 canals 4>, each terminating in a bulb without ocellus, bearing 

 a cluster of two or three tentacles ; a single marginal ten- 

 tacle with a bulbous base in each interradial space ; litho- 

 cysts wanting. 



THE gonozooid of this remarkable genus is identical 

 with the Lizzia of Forbes ; the trophosome is that of the 

 Campanulinida. Now the genus Lizzia is one that pro- 

 duces the generative elements in the walls of the manu- 

 brium, a situation in which they never occur amongst the 

 Thecaphora, except in this single instance. If Allman is 

 right in referring to his Leptoscyphus the medusiform 

 zooids which he found free in the phial containing it, the 

 present genus stands alone in the suborder. 



Claparede has found a Lizzia in the development of 



