CEPHALOSIPHON. 



[ 152 ] 



CERATAULUS. 



A doubtful ge- 



ment-cells, and the cutaneous connective 

 tissue are interestinp: structures. 



CEPIIALOS'IPHON 

 nus of Rotatoria. 



C. limnias. On Ceratophylhim. 

 BiBL. Pritcliard, Infus. p. G70; Hudson, 

 M. M. Jn. 187o, xiv. n. IGo. 



CEPHALOTHAM'NIUM, Stein. — A 

 genus of Flagellate Infusoria. 



Char. Those of Antliophysa, but the 

 pedicle stiff, hyaline, and homogeneous 5 

 filaments two. 



C. c<espitosa. Pedicle short ; attached to 

 Cyclops. C. cunealum, pedicle long ; also 

 on Cyclops. 



BiBL. Kent, Inf. p. 272. 

 CEPHALOT'KICPIUxM, Fr.— A genus 

 of Dematiei (Ilyphoniycetous Fungi). 



C. curtum is an extremely minute plant 

 growing upon the leaves of Sedges ; with 

 scattered, short, brown, erect filaments, 

 bearing somewhat globular heads composed 

 of tufts of forked or ternate branches, with 

 one or two short acute brauchlets, slightly 

 scabrous, bearing smooth spores. 



BiBL. Berkeley, A^in. N. H. vi. p. 432, 

 pi. 12. fig. 13; Corda, Ic. Funy. i. pi. 5. 

 fiffs. 253-4. 



 CE'PHEUS, Koch.— A genus of Oribatea 

 (Acarina). 



Char. Cephalothorax witli lamellar ap- 

 pendages ; tectum attached to cephalotho- 

 rax by its base only ; claws 3, alike. 

 C. vulyaris. Common near Paris. 

 BiBL. Nicolet, Oribatea {Monograph^ ; 

 Murrav, Ec. Eutom. 221 ; Michael, Tr. Mic. 

 Soe. 1880, 177. 



CERAM'BYX, Linn. — A genus of 

 Pseudotetramerous Longicorn Coleoptera. 



C. ( Astynomus') (cdilis (fig. 367). Found 

 on old timber. 



CERAMIA'CE^.— A family of Flori- 

 deous Algfe. Rose-red or purple sea-weeds, 

 one freshwater, with a filiform frond, con- 

 sisting of an articulated, branching filament, 

 compo.sed of a single string of cells, some- 

 times coated with a stratum of small cells. 

 Fructijication: l.favcUcc; berry-like recep- 

 tacles, with a membranous coat, containing 

 numerous angular spores; 2. tetrasj)ore^\ 

 attached to the ramuli or more or less im- 

 mersed in the substance of the branches, 

 scattered ; 3. unfltcridia, produced in tlie 

 same situations as the spores. British 

 genera : 



Ptilota. Frond compressed, inarticulate, 

 disticlious, pectinato-pinnate. Favcllce pe- 

 dunculate, involucrate. 



Microcladia. Frond filiform, inarticulate, 

 dichotomous. Favcllce sessile, involucrate. 

 Ceramium. Frond filiform, articulate, 

 dichotomous; the joints opaque. Favellce 

 sessile, mostly involucrate. Tetraspores 

 mostly immersed. 



Spyridia. Frond filiform, inarticulate; 

 tlie branches clothed with minute setiform, 

 articulated raraelli. Favellce pedunculate, 

 involucrate. Tetraspores sessile on the 

 ramelli. 



Griffithsia. Frond articulated, dichoto- 

 mous, or clothed with whorled, dichoto- 

 mous ramelli, rose-red. Jf/re/te involucrate, 

 sessile or pedunculate. Tetraspores sessile, 

 on Avhorled ramelli. 



Wrangelia. Frond articulated, pinnate, 

 Favellce terminal, involucrate, containing 

 tufts of pear-shaped spores. Tetraspores 

 sessile, scattered on the ramelli. 



Seirospora. Frond articulated. Tetra- 

 spores arranged in terminal, mouiliforra 

 strings. 



Ccdlithamnion. Frond, at least the 

 branches and ramidi, articulated, mostly 

 pinnate. Favellce terminal or lateral, sessile, 

 withont involucre (except 

 in C. Turneri). Tetraspores 

 sessile or pedicellate, scat- 

 tered. 



Chantransia. Fre.-^h- 



water ; fronds filamentous, 

 articulate, branched, cells 

 in single series ; favellce in 

 terminal corymbs. 



BiBL. Harvey, Man. Jir. 

 Alqce; Cramer, Ceram. 

 1863; Sachs, Bot. p. 393. 

 See also the Genera. 



CERAMIUM, Roth.— 

 A genus of Ceramiacete 

 (Florideous Algte), contain- 

 ing a number of species, 

 mostly growing between 

 tide-marks, of which C. cili- 

 atuni is noted as a beautiful 

 object under a low magTiify- 

 ing power. The tetraspores 

 are often only triple, and arranged tetrahe- 

 drally and not in a row (fig. 114). 



BiBL. Harvey, Mar. Alyce, pi. 22 C ; 

 Phyc. Br. pis. 1.39-41, &c. 



CERATAU'LUS, Ehr.— A genus of Dia- 

 tomacece. 



Char. Frusfulos binate or concatenate, 

 septate; valves turgid, suborbieular or 

 broadly ovoid, with 2 tubular processes al- 

 ternating with 2 spines. Marine and fossil. 



Ceraroium Des- 



longthanipsii. 



Fragment of a frond 

 showing one te- 

 tiaspoie in situ, 

 and two emiity 

 parent-cells. 



Magniiled nO dia- 

 meters. 



