COLrODELLA. 



C 195 ] 



CONCHOPHTHIRUS. 



situated at tlie bottom of the notch, and 

 furni.-^hed ^vith a projecling lip. 



C. cuci/llus (PI. 31. fig. 2o). Turgid, 

 slightly compressed, reuit'orm, often nar- 

 rowed'in front ; length 1-1720 to 1-280". 

 Common is vegetable infusions, especially 

 of hay. Ecdysis has been observed iu this 

 animalcule. 



Stein describes the encysting process and 

 reproduction from germs as occurring iu 

 this infusorium. 



C? rcn. Ovato-cyliudrical, reniform, 

 rounded at the ends ; fresh wat. ; length 

 1-280". 



C. ? cuculUo (Lo.rodes cue, Duj.). Com- 

 pressed, iiat, elliptical, slightly sinuous in 

 front ; fresh Avat. ; length 1-000". 



C. parvi/rons, CI. & L. No anterior re- 

 curvature, contractile vesicle not terminal. 

 Fresh Avater. 



BiBL. Ehr. Inf. 347; Duj. Inf. 478; 

 Stein, Infusionsth ; Claparede & Lachmann, 

 270; Kent, 7>?/Ws. 512. 



COLPODEL'LA, Cienk.— A genus of 

 Fliigellate Infusoria. 



Char. Free or adherent, ovate or elon- 

 gate, one flagellum, with a suctorial cavity 

 at the base ; becomes encysted. 



C. pm/nax (PI. 53. fig. 14). Fresh water ; 

 previuaon Chlmnydojnonas; length 1-2000". 

 (Kent,V»/: 378.) 



COLPODI'NA, CI. & L.— A family of 

 Infusoria, characterized by the presence of 

 cilia all over the body, the patent and cili- 

 ated oesophagus, and the absence of rows 

 of buccal cilia directing the particles of 

 food to the mouth. 



Genera : 



Membranous lips absent. 



No setae projecting from the 

 mouth 



1. 



Parameciitin. 



Setae projecting from the mouth. 

 A bundle of short setae form- 

 ing a lower lip 2. Colpoda. 



Oral setoe long, isolated. 



No ventral setEe 3. 



A bundle of ventral seta?... 4. 



Lips membranous, oscillatory 5 . 



CycUdium. 



I'leuronema, 



Glaucoma. 



COLPONE'MA, Stein.— A genus of 

 Flagellate Infusoria. 



C/iar. Free, ovate, pointed and curved, 

 with a ventral groove ; flagella two, one 

 apical and vibratile, the other ventral and 

 trailing. 



C. lo.rodes. Fresh water (Kent, Inf. 

 297). 



COLUREL'LA, Borv, Duj. = Colums, 

 Ehr. 



_ COLU'RUS, Ehr.— A genus ofEotato- 

 ria, of the family Euchlanidota. 



Char. Two frontal eye-spots ; tail-like 

 foot forked ; carapace cylindrical or com- 

 pressed. 



Carapace open beneath ; cervical append- 

 age curved; jaws with two or three teeth 

 each. 



C. defle.vtis (PI. 43. fig. 12, dorsal view; 

 13, ventral view; 14, teeth). Carapace 

 ovate, compressed, its posterior points 

 long and directed downwards; terminal 

 points of foot (toes, E.) shorter than the 

 foot itself; length of carapace 1-240". 

 Freshwater. 



C. caudatus. Carapace ovate, compressed, 

 posterior points of carapace distinct, points 

 of foot longer than the foot itself ; fresh- 

 water and marine ; length 1-240". 



C. ? imcinatus and bicuspidatus are doubt- 

 ful species. 



BiBL. Ehr. Infus. 475. 

 COMBEA, D.'N.— A genus of podetii- 

 forni Lichens, tribe Eoccellei. 1 species, 

 C. moUusca ; rocks. Cape of Good Hope. 



BiBL. Ach. Meth. 235, pi. 4. f. 5 ; Nyl. 

 Sijn. 257, pi. 8. f. 1. 



COMPKESSOPt. Introduction, p. 

 xxiii. ; Ross's new compressor is described 

 in Qn. Micr. Jn. 1864, 44, 



COMP'SOGON, Mont.— A genus of Le- 

 maneece (Confervoid Algaj). 



1 European species : C. Corinnldii. Ca- 

 piUarv, much branched, violet. Freshwater, 

 CONCEPTACLE.— A form of fructifi- 

 cation in the Flobide^ and FrcoiBE^. 

 Also occurring iu the fructification of some 

 Fungi. 



CONCHCE'CIA, Dana.— A genus of Os- 

 tracode Entomostraca, fam. Couchoeciadae. 

 Char. Those of the family. 

 C. obtusaia^ Sars. Shetland. 

 BiBL. Dana, Crustac. Explor. U.vpedit. 

 Sec. ; Sars, Oversigt af Noryea mar. Ostr. 

 118 ; Brady, Litm. Tr. xxvi. 469. 



CONCHCE'CIAD^.— A family of En- 

 tomostraca, of the order Ostracoda. 



Char. Inferior antennte 2-branched, one 

 branch rudimentary and immoveable ; feet 

 2 pairs, posterior rudimentary, eyes none. 

 1 genus, Conchcecia. 



CONCHOPHTHI'RUS, Stein.— Agenus 

 of Ilolotrichous Infusoria. 



Char. Free, oblong, dorsally convex, 

 striate. 



C. anodontce= Lencophrys an. Ehr. In 

 the '' body-mucilage " of freshwater Mol- 

 lusca. 2 other species. (Kent, Inf. 490.) 



o2 



