CYPHIDIUM. 



[ 230 ] 



CYPRIS. 



BiBL. Fries, Syst. Myc. ii. 201 ; L^veille, 

 Ann. Sc. Kat. 2 ser. xvi. 237. 



CYPPIID'IUM, 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. 

 _ C. mircolum (PI. ?>0. fig. 38). Cubical, 

 gibbous, expansion (fig. 385) layaline ; fr, 

 wat. ; length 1-570 to 1-432". 

 BiBL. Ehr. Infus. 135. 

 CYPHODE'lilA, Schlumb.— A genus of 

 Rhizopoda, of the family ArceUina. 



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 Diffliujia 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 Em/hjpha (CI. & L.). 

 C. marf/aritacea. Carapace yellowish, ex- 

 pansions twice its length ; fr. wat. ; length 

 1-380 to 1-180". 



BiBL. Schlnmberger, Ann. des Sc. Nat. 

 1845, iii. p. 255. 



CYPIIONAU'TES, Ehr.— A genus of 

 Rotatoria, of the family Megalotrochaea. 

 Char. Eyes absent ; no teeth. 

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

 fig. 20, view from above). Compressed, 

 obtusely triangular, truncate in front, sub- 

 acutely gibbous at the back ; marine : length 

 1-180"". 



BiBL. Ehrenb. Infus. 395. 

 CYPREL'LA, I)e Koniuck.— A fossil 

 Ostracod, related to ' Cxipridina ; carapace 

 annulated by superficial transverse furrows. 

 Found in the Carboniferous Limestone of 

 Belgium and the British Islands. 



BiBL. De Koninck, Carh. Foss. Belq. 

 1844, 589 ; Jones, M. Mic. Jn. 1870, pi. (Vl . 

 f. 10. 



CYPRIDEL'LA, De Kon.- A fossil Os- 

 tracod closely allied to Cypridina. Very 

 common in the Carbonifei'ous Limestone of 

 the British Isles and Belgium. 



BiBL. De Koninck, Carh. Foss. Behj. 

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

 f. 9. 



CYPRLDI'NA, M.-Edwards.— A genus 



of Ostracode Entomostraca, fam. Cypri- 

 dinidfe. 



Char. Valves oval or oblong, smooth, 

 notched antero-inferiorly, posterior end 

 somewhat produced. Superior antennae 

 seven-jointed; setfe of moderate length; 

 natatory branch of inferior antennpe nine- 

 jointed, bearing moderately long setfe; se- 

 condary branch very small, subulate. Basal 

 joint of mandibular feet bearing an entire 

 subconical and densely hairy process ; pe- 

 nultimate joint much elougated, and beset 

 on the internal margin with numerous 

 ringed setre ; 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 

 Maestricht Chalk. 



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

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

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

 Pal. Soc. 1871. 



CYPllID'IUM.— A genus of Hj^otri- 

 chous Infusoria (Kent, Inf., 215). 



C YPRIDOP'SIS,Br.— A genus of Ostra- 

 code Entomostraca, family Cypridaj. 



Char. Those of Cypris, except that the 

 post-abdominal rami are rudimentary and 

 setiform. 



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

 Cypris vidua, Bd. ; C. villosa, Jir.= Cypris 

 Westiooodii, Bd. 



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

 Nat. Hist. 1872, ix. G4. 



CY'PRIS, Mliller.— A genus of Ostra- 

 code Entomostraca, family Cypridae. 



Char. LoAver antennfe simple, with a 

 brush of sette 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 uv long oval carapace 

 or shell. Superior antennfe (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 oft" 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 



