14 V. A. SMITT, 



Zooecia cellularina, fornicata [fornice x ) reniformi in formam cervicornera excavato] 

 inferne attenuata, extrorsum curvata, arcam aperturae ovalem 0,18 m.m. circ. longara, 

 setas area? marginales 5 — 2, vulgo tres, praebent. Margo externus avicularii lateralis 

 externi angulura obtusum (l£ rectum) curn latere zooecii deorsum facit. Vibracularium 

 ad basin zooecii ovale, sulcatum, locum ab aviculario laterali zooecii praecedentis di- 

 stantem tenet. Avicularia in fronte zooecii mediana rara sunt, saepissime zooecium ad 

 ramificationem medianum soluni muniunt. 



With this constitution, the general appearance is that of\ a Cellularia ternata. 

 With a corneo-hyaline ectocyst, in the microscope it has a very pretty hue; and for 

 its clearness all the above named characters are very easily discovered (see fig. 32 

 — 84). But the only specimen, I got for examination, is a very little fragment: and I 

 am, consequently, unable to state the form of the ooecia. 



It was taken by Pourtales, Jan. 1869, at a depth of 68 fathoms. 



The second Floridan form of this genus is the 



Cellularia comigera 2 ) (Pl. V, tigs. 35 — 38), 



which I thus characterize for the comparison with the preceding as well as the follo- 

 wing form: 



Zooecia cellularina, fornicata (fornice reniformi in formam cervicornem excavato, 

 margine superiori abscisso, intus saepissime in dentein producto), inferne attenuata, ex- 

 trorsum aliquanto curvata (1. fere recta), aream aperturae ovalem 0,3 m.m. circ. longam, 

 setas areae marginales 5 — 3 praebent. Margo externus avicularii lateralis externi angu- 

 luin valde obtusum vel fere rectam lineam cum latere zooecii deorsum facit. Vibracu- 

 larium ad basin zooecii ovali-trapezoideum, sulcatum parte inferiori — e qua crescunt 

 soboles aculeati — avicularium laterale zooecii praecedentis tangit. Avicularia mediana 

 frontem fere omnium zooeciorum muniunt. Ooecia parietem poribus pertusum praebent. 



With the difference in the size of the zooecia, as compared with the preceding 

 form, easiest to be expressed from the size of the area, this form in its general appear- 

 ance has the greatest resemblance to the northern Cellularia gracilis (Menipea arctica, 

 Busk). In accordance with the older state of the typical specimen, the only one of 

 this form that Pourtales has sent me, it is not wholly so transparent or pretty, as 

 the preceding form; but here we lind all the colonial organs (see fig. 35 — 38) that be- 

 long to the Cellularian type. 



It was taken by Pourtales from a depth of 270 fathoms. 



The third Floridan form of this genus is the 



Cellularia eervicornis 3 ) (Pl. V, tigs. 39 — 42) 



a very well-known form, discovered and descrilted, as it is, by the great reformer of 

 the science on this group of animals. But for comparing it with the two preceding 

 forms, I will characterize it again in the following inanner: 



') —-operculo, Bisk. 



-) Canda comigrra, Pourt., Bull. Mus. Corap. Zoöl., Harv. Coll. Cambridge, N:o 6, pag. 111. 



3 ) Scrupocellaria eervicornis, Busk: Cat. Mar. PohjZ. Brit. Mus., part I, pag. 24 pl. LXII. 



