CYCLIDINA. 



[ 224 ] 



CYCLOPS. 



slit and some large pores. Recent ; in deep 

 parts of the Atlantic and Pacific. 



BIBL. H. B. Brady, Qu. Mic. Jn. xix. 

 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- 

 ing a circle Cyclidium. 

 Hounded, cilia scat- 

 tered Pantotrichum. 



(.bristles Ckattomonas. 



BIBL. Ehr. Infus. p. 244. 



CYCLID'IUM, Hill, Ehr. A genus of 

 Holotrichous Infusoria. 



Char. Body compressed ; organs of loco- 

 motion a circle of abdominal cilia-like feet ; 

 mouth ventral, with a hood-shaped exten- 

 sile membrane. 



C. glaucoma (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". Cl. & L. include under 

 this species Acomia ovulum, Alyscum saltans, 

 Enchelys triquetra, and Uronema marina. 



C. margaritaceum. Orbicular-elliptic, 

 slightly emarginate posteriorly ; cilia obso- 

 lete ; pearly; freshwater; length 1-21 00 to 

 1-1000" (this is Glaucoma maryaritaceum, 

 Clap. & Lachm.). 



Two doubtful species, C. planum and 

 lentiforme. 



C. elongatnmj Cl. & L. 



Dujardin includes his species of Cycli- 

 dium, the relation of which to those of 

 Ehrenberg is doubtful, in the family Mona- 

 dina, with the characters 



Body disk-shaped, depressed or lamelli- 

 form, but little variable in form, with a 

 single nagelliform filament. Four species ; 

 freshwater. 



C. nodulosum. With series of nodules 

 and vacuoles; motion extremely slow; 

 length 1-530". 



C. abscissum (PI. 30. fig. 37 b). Lamel- 

 liform, oval, truncated posteriorly ; motion 

 slow ; length 1-920". 



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

 nodular, irregularly twisted ; margin thick- 

 ened ; length 1-1800". 



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



BIBL. Ehr. Infus. 245; Duj. Infus. 286; 

 01. & L. Inf. 271 ; Kent, Inf. 544. 



C YCLOCH/E'TA, Jackson. A genus of 

 Peritrichous Infusoria, allied to Trichodina. 

 C. spongillce. In the interstices of the 

 freshwater sponge. 



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

 Inf. 650. 



CYCLOCLY'PEUS, Carpenter. A re- 

 latively large, discoidal, Nummuline Fora- 

 minifer, which grows by concentric annuli 

 of chamberlets, instead of spirally with suc- 

 cessive chambers. It thus bears the same 

 relation to its ally Hcterostegina that Orbi- 

 tolites does to Orbiculina. Known only re- 

 cent from Borneo. 



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

 292. 



C YCLOGLE'NA, Ehr. A genus of Ro- 

 tatoria, of the family Hydatinaea. 



Char. Eyes more than three, forming a 

 cervical group ; foot forked. 



Pharyngeal jaws with one or perhaps 

 three teeth. 



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

 oblong or conical, not auricled; foot and 

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

 C. ? elegans. In Egypt. 

 BIBL. Ehr. Infus. p. 453. 

 CYCLOGRAM'MA, Perty. A genus of 

 Infusoria. 



C. rubens = a Nassula, Cl. & L. 

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

 Perty, Leltmf. p. 146. 



OYOLOLTNA, p'Orb. An excessively 

 thin discoidal condition of Patellina, con- 

 sisting of perfect annuli and very little um- 

 bilical cell-growth. In Cretaceous strata, 

 France. 



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

 ker and Jones, Ann. N. H. ser. 3, vi. 36 j 

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

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



CYCLOPI'NA, Claus. A genus of Co- 

 pepodous Entomostraca. 



C. littoralis, gracilis, and ovalis ; in dredg- 

 ings. 



BIBL. Brady, Copep. i. 91. 

 CY'CLOPS, Miiller. A genus of Cope- 

 podous Entomostraca, family Cyclopidae. 



Char. Foot-jaws large and strong, 

 branched ; eye single, frontal ; inferior an- 

 tennae simple ; external ovaries two. (Both 

 superior antennae in the male furnished with 

 the swelling and hinge-joint.) 



C. quadricornis (PI. 20. figs. 8-15). The 

 only species. Variable in colour; fresh- 

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



Thorax composed of four, and abdomen 

 (apparently the tail) of six segments j head 



