CYPHIDIUM. 



[ 230 ] 



CYPKIS. 



. Fries, Syst. Myc. ii. 201 ; Le*veill< ? 

 i. Nat. 2 se*r. xvi. 237. 



BlBL. 



Ann. Sc. 



CYPHIDIUM, Ehr. A genus of Infu- 

 soria, of the family Arcellina. 



Char. Carapace urceolate, tuberculated ; 

 expansion variable, broad, single and entire. 



The carapace is combustible, and re- 

 sembles a small cube, with a short pedicle. 



G. aureolum (PI. 30. fig. 38). Cubical, 

 gibbous, expansion (fig. 386) hyaline ; fr. 

 wat. : length 1-570 



W 

 tol- 



432' 

 BIBL. Ehr. Infm. 135. 



CYPHODE'RIA, Schlumb. A genus of 

 Rhizopoda, of the family Arcellina. 



Char. Carapace membranous, resisting, 

 ovoid, elongated in front, recurved and con- 

 stricted in the form of a neck and marked 

 with oblique rows of projections ; orifice 

 circular, oblique ; expansions very long, 

 filiform, very slender at the end, simple or 

 branched. 



Agrees with Difflugia enchelys, E. (Tri- 

 nema, Duj.), in the oblique orifice, the 

 oblique rows of markings, and the nature 

 of the expansions, but differs from it in 

 the presence of the anterior neck-like con- 

 striction. 



Probably species of Euglypha (01. & L.). 



C. margantacea. Carapace yellowish, ex- 

 pansions twice its length ; fr. wat. ; length 

 1-380 to 1-1 80". 



BIBL. Schlumberger, Ann. des Sc. Nat. 

 1845, iii. p. 255. 



CYPHONAU'TES, Ehr. A genus of 

 Rotatoria, of the family Megalotrochaea. 



Char. Eyes absent ; no teeth. 



C. compressw (PI. 43. fig. 19, side view ; 

 fig. 20, view from above). Compressed, 

 obtusely triangular, truncate in front, sub- 

 acutely gibbous at the back j marine ; length 

 1-180". 



BIBL. Ehrenb. In/us. 395. 



CYPREL'LA, De Koninck. A fossil 

 Ostracod, related to ' Cypridina ; carapace 

 annulated by superficial transverse furrows. 

 Found in the Carboniferous Limestone of 

 Belgium and the British Islands. 



BIBL. De Koninck, Garb. Foss. Belg. 

 1844, 589 ; Jones, M. Mic. Jn. 1870, pi. 61. 



CYPRIDEL'LA, De Kon. A fossil Os- 

 tracod closely allied to Cypridina. Very 

 common in the Carboniferous Limestone ot 

 the British Isles and Belgium. 



BIBL. De Koninck, Garb. Foss. Belg. 

 1844, 590 ; Jones, M. Mic. Jn. 1870, pi. 61. 



' CYPRIDI'NA, M.-Edwards. A genus 



of Ostracode Entoniostraca, fam. Cypri- 

 dinidae. 



Char. Valves oval or oblong, smooth, 

 notched antero-inferiorly, posterior end 

 somewhat produced. Superior antennae 

 seven-jointed; setae of moderate length; 

 natatory branch of inferior antennae nine- 

 jointed, bearing moderately long setae ; se- 

 condary branch very small, subulate. Basal 

 joint of mandibular feet bearing an entire 

 subconical and densely hairy process ; pe- 

 nultimate joint much elongated, and beset 

 on the internal margin with numerous 

 ringed setae ; last joint very short and al- 

 most obsolete. 



2 European species : C. Norvegica and C. 

 Messinensis. 



Many fossil forms, apparently identical 

 with Cypridina^ occur in the Mountain- 

 limestone and the Coal-measures of Europe 

 and the British Isles ; some also in the 

 Maastricht Chalk. 



BIBL. Brady, Zool. Proc. 1871, 289; 

 M.-Edwards, Hist. Nat. Crust, iii. 409; 

 Jones, K.. & B., Mongr. Carb. Entom., 

 Pal. Soc. 1871. 



CYPRID'IUM. A genus of Hypotri- 

 chous Infusoria (Kent, Inf., 215). 



CYPRIDOP'SIS,Br. A genus of Ostra- 

 code Entomostraca, family Cy prides. 



Char. Those of Cypris, except that the 

 post-abdominal rami are rudimentary and 

 setiform. 



5 living British species. C. vidua, Br. = 

 Cypris vidua, Bd. ; C. villosa, Br.=C^m 

 Westwoodii, Bd. 



BIBL. Brady, Linn. Tr. xxvi. 375 ; Ann. 

 Nat. Hist. 1872, ix. 64. 



CY'PRIS, Miiller. A genus of Ostra- 

 code Entomostraca, family Cypridae. 



Char. Lower antennae simple, with a 

 brush of setae and clawed at the apex; setae 

 of upper antennae very long ; feet two pairs, 

 the last bent up between the valves. Post- 

 abdominal rami forming two elongate rami, 

 clawed at the apex. Animal swimming 

 freely. 



Body enclosed within a bivalve, horny, 

 mostly subreniform or long oval carapace 

 or shell. Superior antennae (PI. 20. fig. 18) 

 seven-jointed, with pretty long, mostly 

 feathery filaments, arising from the three or 

 four last joints. Inferior antennae (fig. 19) 

 leg-like, five-jointed, giving off the tuft of 

 usually feathery filaments, the last joint 

 terminated by four strong curved claws. 

 Labrum composed of a somewhat hood- 

 shaped piece, projecting between the two 



