CYCLIDINA. 



[ 224 ] 



CYCLOPS. 



slit and some large pores. Recent ; in deep 

 parts of tlie Atlantic and Pacific. 



BiBL. II. B. Brady, Qu. Mic. Jn. xis. 

 p. 43. 



CYCLIDI'NA, Ehr.— A family of In- 

 fusoria. 



Char. No carapace; a single alimentary 

 orifice ; appendages in the form of cilia or 

 bristles. 



{Flattened, cilia form- 

 inp; a circle Cyclidium. 

 Bounded, cilia scat- 

 tered Panfotrichum. 



bristles Chcetomoiias. 



BiBL. Ehr. Infus. p. 244. 



CYCLIDIUM, Hill, Ehr.— A genus of 

 Holotrichous Infusoria. 



Char. Body compressed ; organs of loco- 

 motion a circle of abdominal cilia-like feet ; 

 mouth ventral, -o'ith a hood-shaped exten- 

 sile membrane. 



C. f/laucoma (PI. 30. fig. 37 c, side view ; 

 d, dorsal view). Oblong-elliptical, entire, 

 -with a long saltatory seta in front (behind, 

 Kent); circle of cilia large; dorsal lines 

 very fine ; contractile vesicle placed at the 

 front end (back, Kent) ; freshwater ; length 

 1-2880 to 1-1150". CI. & L. include under 

 this species Acomia ovuhim, Ah/scum saltans, 

 Enchelys iriquefra, and Uronema marina. 



C. viaryaritaceum. Orbicular-elliptic, 

 slightly emarginate posteriorly ; cilia obso- 

 lete ; pearly; freshwater; length 1-2100 to 

 1-1000" (this is Glaucoma inaryaritaceiim, 

 Clap. & Lachm.). 



Two doubtful species, — C. ^ilarmm and 

 lentiforme. 



C. el(»if;atiim, CI. & L. 



Dujarciin includes his species of CycU- 

 dium, the relation of which to those of 

 Ehrenberg is doubtful, in the family Mona- 

 dina, with the characters — 



Bodv disk-shaped, depressed or lamelli- 

 form, but httle variable in form, with a 

 single flagelliform filament. Four species ; 

 freshwater. 



C nudtdosum. "With series of nodules 

 and vacuoles; motion extremely slow; 

 length 1-530". 



C. abscissttm (PI. 30. fig. 37 b). Lamcl- 

 liform, oval, truncated posteriorly ; motion 

 slow: length 1-020". 



C. distortum (PI. 30. fig. 37 a). Oval, 

 nodular, irregidarlv twisted ; margin thick- 

 ened ; length 1-1800". 



C. crassnm. Length 1-1800 to 1-1100". 



BiBL. Ehr. Infus. 245 ; Duj. Infus. 28G; 

 CI. & L. Inf. 27i ; Kent, Inf. 544. 



C YCLOCH.E'TA, Jackson.— A genus of 

 Peritrichoiis Infusoria, allied to Trichodina. 

 C. sponf/iUce. In the interstices of the 

 freshwater sponge. 



BiBL. Jackson, Qu. Mic.Jn. 1875 ; Kent, 

 Inf. 050. 



"CYCLOCLY'PEUS, Carpenter.- A re- 

 latively large, discoidal, Nummuline Fora- 

 minifer, winch grows by concentric annuli 

 of chamberlets, instead of spirally with suc- 

 cessive chambers. It thus beai-s the same 

 relation to its ally Hcteroste(/ina that Orhi- 

 tolites does to Orbiculina. Known only re- 

 cent from Borneo. 



BiBL. Carpenter, Phil. Tr. 1856 ; Foram. 

 292. 



CYCLOGLE'NA, Ehr.— A genus of Ro- 

 tatoria, of the family Hydatintea. 



Char. Eyes more than three, forming a 

 cervical group ; foot forked. 



Pharyngeal jaws with one or perhaps 

 three teeth. 



a lupus (PI. 43. fig. 18). Body ovate- 

 oblong or conical, not auricled; foot and 

 toes short ; aquatic ; length 1-144 to 1-120". 

 C. ? clef/ans. In Egypt. 

 BiBL. Ehr. Infus. p'. 453. 

 CYCLOGRAM'MA, Perty.— A genus of 

 Infusoria. 



C. rtdjcns = a Kassula, CI. >t L. 

 BiBL. Clap. & Lachm. Infus. p. 326 ; 

 Pertv, Lebensf. p. 146. 



CYCLOLiNA, D'Orb.— An excessively 

 thin di,■^coidal condition of Patellina, con- 

 sisting of perfect annidi and very little um- 

 bilical cell-growth. In Cretaceous strata, 

 France. 



BiBL. D'Orb. For.Fos. Vien. 139; Par- 

 ker and Jones, Ann. N. II. ser. 3, vi. 30; 

 Carpenter, Introd. For. 230, 233 ; Carter, 

 An. N. H. 1861, Dec, 464. 



CYCLOPI'NA, Clans.- A genus of Co- 

 pepodous Entomostraca. 



C. littoral is, gracilis, and ovalis ; in dredg- 

 ings. 



BiBL. Brady, Copep. i. 91. 

 CY'CLOPS, Miiller.— A genus of Cope- 

 podous Entomostraca, family Cyclopida?. 



Char. Foot-jaws large and strong, 

 branched ; eye single, frontal ; inferior an- 

 tenna) simple ; external ovaries two. (Both 

 superior antennae in the male furnished with 

 the swelling and hinge-joint.) 



a qjiadricornis (Pi. 20. figs. 8-15). The 

 only species. Variable in . colour ; fresli- 

 water ; length 1-17 to 1-14". 



Thorax composed of four, and abdomen 

 (apparently the tail) of six segments ; head 



