FLOSCULARLEA. 



[ 329 



FORAMINIFERA. 



Eyes sometimes absent in the adult ani- 

 mals. Sheath or carapace frequently so 

 transparent as to be scarcely distinguish- 

 able. Rotatory organ with five or six lobes ; 

 the number, however, appears variable ; for 

 Ehrenberg states in one place that the lobes 

 are five or six, in another that they are 

 always six. The so-called proboscis is pro- 

 bably only one of the lobes of the rotatory 

 organs ; freshwater. 



F. ornata, E. (PL 43. fig. 32). Carapace 

 hyaline; rotatory lobes six (Ehr.), five 

 (Duj.j, with long cilia, but no central pro- 

 boscis ; length 1-108". 



Lobes of rotatory organ thickened at the 

 ends. 



F. proboscidea, E. Carapace hyaline; 

 rotatory organ 6-lobed, with short cilia 

 surrounding a central proboscis; length, 

 when extended, 1-18". Teeth (fig. 33). 



F. campanulata, Dob. Differs from F. 

 ornata, Ehr., in having five lobes, and these 

 flattened ; length, when extended, 1-50". 



F. cornuta, Dob. Rotatory organ 5- 

 lobed, one of the lobes with a narrowed, 

 not ciliated cornu attached, arising from its 

 outside ; cilia long ; length, when extended, 

 1-40". 



Other species. 



These exquisitely beautiful animals are 

 found adhering to aquatic plants, as Con- 

 ferva, Ceratophyllum, &c. 



BIBL. Ehr. Inf. 407; Duj. Inf. G09; 

 Dobie. Ann. N. H. 1849, iv. 233 ; Cubitt, 

 Mn. Mic. Jn. 1&69, ii. 143 (PL), and 1871, 

 vi. 83 (new spec.) ; Weisse, Sieb. fy Koll. 

 Zeitsch. xiv. 107 (PL) ; Hudson, Jn. Mic. 

 Soc. 1881, i. 4. 



FLOSCUL ARLE'A. A family of Rota- 

 toria. 



Char. Furnished with a carapace or 

 sheath ; rotatory organ single, with a flexu- 

 ous, lobed or divided margin. 



The cilia are often long, and only vibrate 

 occasionally, mostly remaining rigidly ex- 

 tended. 



Genera. 



Eyes absent 1. Tubicolaria. 



Eye single 2. Stephanoceros. 



( 9 , , -, j single.... 3. Limnias. 



Eyes j Rotatory 1 \ aggregate 4. Lacinularia. 

 two 1 organ ) 4-lobed 5. Melicerta. 



(5- or 6-lobed , 6. Floscularia.] 



The eyes in some of the genera (Stepha- 

 noceros and Floseularia) disappear in the 

 adult state ; so that they must be looked for 

 in the young, or even in the partly hatched 

 ova, in which they may often be distinctly 

 teen. 



BIBL. Ebrenberg, Infus. p. 398. 



FLUKE. See DISTOMA. 



FLUS'TRA, Linn. (Sea-mat). A genus 

 of Cheilostornatous Polyzoa, family Flus- 

 tridae. 



Char. Polyzoarium plant-like, foliaceous, 

 flexible ; cells in contact, alternate, in seve- 

 ral rows, and on both sides of the polypi- 

 dom ; aperture transverse, semicircular or 

 lunate, valvular and subterminal. Marine. 



F. foliacea. Cells narrow at the base, 

 rounded at the end, with scattered marginal 

 spines. Common; about 4" high. 



F. chartacea. Cells oblong, slightly 

 broader in the middle ; lateral margins with 

 a single minute spine. 



About 1" in height. 



F. truncata. Cells linear-oblong, truncate 

 at the end, margins without spines : 4-5" 

 high. 



F. carbasea = Carbasea papyrea ; F. am- 

 cularis=Btigulaflabellata ; F. Murray ana = 

 Bugula Murr. ; F. membranacea } coriacea, 

 and lmeata = Membranipora m. } c., and I. 



BIBL. Johnston, JBr. Zooph. 342 ; Reid, 

 Ann. N. H. 1845, xvi. 385; Busk, Brit. 

 Mus. Catal 47 ; Hincks, Polyz. 114. 



FLUS'TRADJE. A family of Cheilo- 

 stornatous Polyzoa. 



Distinguished by the expanded, foliaceous, 

 flexible and erect polyzoary, with its nu- 

 merous contiguous cells. Two genera. 



Fhistra. Cells on both sides. 



Carbasea. Cells on one side only. 



BIBL. Busk, Mar. Polyz. (Br. Mus.} 46. 



FLUSTREL'LA, Gray. A genus of 

 Ctenostomatous Polyzoa, of the order In- 

 fundibulata, and family Alcyonidiidse. 



In crusting, cells radiating or alternate, 

 the circumference with setae ; orifice rect- 

 angular. 



F. hispida. Common near low-water 

 mark upon Fucus serratus. Polyzoary 

 brown, fleshy. 



BIBL. Johnston, Br. Zooph. 363; Red- 

 fern, Qu. Mic. Jn. vi. 96; Hincks, Polyz. 

 504. 



FLY. See MUSCA. 



FOLLICULA'RIA=^ T m. 



FONTINA'LIS, L. A genus of pleuro- 

 carpous Mosses. 



P. antipyretica, greater water-moss; in 

 rivulets. F. squamata. (Wilson, Bryol 

 Brit. 422.) 



FORAMINIF'ERA. An order in the 

 Animal Kingdom, belonging to the Sub- 

 kingdom Protozoa, and class Rhizopoda. 



Char. Gelatinous, structureless, usually 



