FLORIDAN BRYOZOA. 63 



ria. Lastly, it is a very interesting circumstance, connected with the difference in the 

 structure of the ooecia, for that same peculiarity, as they are striated in the Lepr. clei- 

 dostoma, once, by Busk, in the structure of the zooecia, was cited as characteristical 

 for the Lepralia adpressa J ), which character, however, at late was cast away. Bnt, 

 besides the development of the avicularia, this structure of the zooecia] wall was the 

 only appliable character for the distinction between the Lepr. hippopus and Lepr. ad- 

 pressa; and then, for the appreciation of the systematical weight of the differences, it 

 is of great interest to find a character, fading away in the zooecia, to return, in the 

 structure of the ooecia, in a closely related species. For the commonness of their ori- 

 gin, that circumstance will leave a very good argument. 



In the same time, this striation of the ooecia, together with the form of the zo- 

 oecial aperture, with this group connects, also, the Adriatic Lepralia, Kirchenpaueri 2 ). 



The Lepralia cleidostoma was taken by Pourtales in only a few specirnens. In 

 one of these, the zooecia, of an almost Celleporine constitution, are raised to form a 

 low tuberosity. The colour of the colony is shining white, either pure or with a 

 bluish tinge. The surface of the zooecia is almost quite smooth or roughened by ir- 

 regular warts and impressions. "^ 



Lepralia edax 3 ) (Pl. XI, figs. 220—225). 



1. Forma typica: 



Hab.: Colonise in stirpis subcompressaä förmana erectai fragmentum minimum e 

 prof. 49 orgyarum sustulit Pourtales. 



2. Forma calcarea (tigg. 220—223). 



Char.: Zooecia colore calcarea aperturam claviformem, parte proximali breviorem, 

 margine proximali aperte concavam vel fere rectam, frontem vulgo ad marginem solum 

 porosam prasbent, linea marginali elevata limitantur, aviculario marginali rotundo muni- 

 untur. Ooecia depresse-rotunda aream frontalem calcificatione debiliori notatam pra?- 

 bent, foramine transverse-elliptico in apice hujus areas aperiuntur. Avicularia, zooeci- 

 orum magnitudinis et forman, inter zooecia sparsa aperturam lageniformem, parte distali 

 (rostrali) lineariter extenuatam, ad articulationem mandibulse trabecula calcarea trajectam 

 pra?bent. 



Hab.: Colonias duas (hgg. 221 et 223) erectas, pumicosas, quarum una (fig. 221) 

 tubum vermis (Serpulce) edit, e proff. 49 et 79 orgyarum cepit Pourtales. 



3. Forma janthina (figg. 224 et 225): 



Char.: Zooecia colore violacea aperturam formae pracedentis similem, frontem po- 

 rosam prsebent, linea marginali elevata limitantur, aviculario laterali acuto muniuntur. 



') Brit. Mus. Catal. Polyz., p. 82, pl. C1I, figs. 3, 4;" Quart. Joum. Micr. Se. vol. IV, p. 178, Zoophyt., 

 pl. VIII, fig. 6; Hincks, Cat. Zooph. S. Dev. S. Cornw., Ann. Mag. Nat. Hist., ser. 3, vol. IX, p. 205. 



-) Heller, Verh. k. k. Zool. Bot. Ges Wien, Bd. XVII (1867) p. 105. 



:! ) Cellepora edax, Busk, Monogr. Crag Polyz., p. 59, tab. IX fig. 6, tab. XXII fig. 3; Td., Quart. Joum. 

 Micr. Se., n. ser., vol. I p. 154, ZoophytoL, tab. XXXIV figg. 3 et 3a; Hincks, Ann. Mag. Nat. Hist., 

 ser. 3, vol. IX p. 304. 



