CHILOMONAS. 



[ 166 ] 



CHLORASTER. 



CHILOM'ONAS, Ehr. A genus of Fla- 

 gellate Infusoria, of the family Monadina. 



Char. No tail nor eye-spot ; body ovoid, 

 oblong, surmounted by a lip ; with two very 

 delicate flagelliform filaments ; revolving 

 upon its centre. 



C. volvox. Oval, narrowed and notched 

 in front, colourless and transparent, lip long; 

 fresh water; -length 1-1400". 



C. paramecium. Oblong, keeled, trila- 

 teral, colourless and opaque, sometimes ag- 

 gregated; freshwater; length 1-1020". 



C. destruens. Oblong, variable in form 

 from its softness, colourless or yellowish ; 

 fresh water and marine ; length 1-860". 



C. granulosa (PI. 30. fig. 28). Oblong, 

 broader in front, colourless, with granules 

 which appear to project on the surface ; 

 length 1-840". In an infusion of mosses. 



C. obliqua. Ovoid or pyriform, nodular, 

 colourless, variable in form ; length 1-2700". 



BIBL. Ehrenb. Infos. 30; Duj. Inf. 295; 

 Kent, Inf. 423. 



CHILOSTOMEL'LA, Reuse. A Fora- 

 minifer, consisting of subovate chambers, 

 overlapping one another, almost completely, 

 on opposite sides alternately; with crescentic 

 almost terminal aperture. 



Fossil (Tertiary), recent (Atlantic and 

 Pacific). 



BIBL. Reuss. Denkschr. Ak. Wien, 1850, 

 i. 16 ; Brady, Qu. Mic. Jn. xix. 66. 



CHIODEC'TON, Ach. A semis of 

 Lichens (tribe Graphidei), of which one 

 species, C. myrticola, has been found in 

 Ireland ; and its var. sarniense in the Chan- 

 nel Islands. 



BIBL. Leighton, Ang. Lich. 24, pi. 8. fig. 

 4, pi. 9. fig. 1 ; Lich. Flor. 435 ; Tulasne, 

 Ann. So. Nat. 3 ser. xviii. pi. 10. 



OHIONY'PHE, Thienem. A genus of 

 Mucorini (Phycomycetous Fungi), found 

 growing upon melting snow. 



Chionyphe Carteri, Berk., is a curious 

 fungus, which is supposed to be the cause 

 of that formidable disease the Fungus-foot 

 of India. It has, however, been doubted 

 whether it is really the cause, or only 

 a secondary growth on the truffle-like 

 nodules composed principally of stearine (?) 

 which are characteristic of the disease. 

 Hogg considers the disease somewhat simi- 

 lar to the amyloid lardaceous disease which 

 attacks various other parts of the body. 



BIBL. Thieneman, Nova Ada A. C. L. C. 

 xi. 1839; Ann. So. Nat. 2 se>. xiv. 63; 

 Intell. Obs. 1862 ; Berkeley, Jn. Linn. Soc. 

 viii. 141, pi. 10; Carter, Tr. Med. and Phys. 



Soc. Bombay, 1861, 1862, 1863 ; Ann. N. H. 

 vol. ix. 442, 1862 ; Mn. Mic. Jn. 1871. 



CHIROD'OTA, Eschsch. A genus of 

 Echinodermata, closely allied to Synapta. 



C. violacea possesses curious wheel-like 

 calcareous plates in the skin. 



Not British. 



BIBL. V. der Hoeven, Zool i. 150 ; Car- 

 penter, Microscope, 564; Herapath,Qw. Mic. 

 Jn. 1865, 1. 



_ CHITINE is the horny substance which 

 gives firmness to the tegumentary system 

 and other parts of the Crustacea, Arachnid*. 

 and Insects ; probably also the carapace of 

 the Rotatoria consists*of it. It is left when 

 the above structures are exhausted succes- 

 sively with alcohol, ether, water, acetic acid, 

 and alkalies, retaining the original form of 

 the texture. It is dissolved by concentrated 

 mineral acids without the production of 

 colour. It is not dissolved by solution of 

 potash, even when boiling. Neither does it 

 give the characteristic reactions withMillon's 

 or Schultze's tests. It contains nitrogen. 



BIBL. Odier, M6m. Mus. d'Hist. N. i. 

 p. 35 ; Lassaigne, Compt. Rend. xvi. p. 1087; 

 Schmidt, Vergl. Phys. d. wirbellos. Thiere 

 (Taylor's Sc. Mem. v. p. 1) ; Payen, Compt. 

 Rend. xvii. p. 227. 



CHLAMIDOCOC'CUS. See PEOTO- 

 coccus ; also Cienkowsky, Bot. Zeit. 1865 ; 

 Rostafinsky, ibid. 1871 ;" and Rabenhorst. 

 Fl.Alg. iii. 94. 



CHLAMLD'ODON, Ehr. A genus of 

 Infusoria, of the family Euplota. 



Char. Furnished with cilia and a cylinder 

 of teeth, but neither styles nor hooks. (Oxy- 

 tricha with a lorica and teeth.) 



C. mnemosyne (PI. 30. fig. 29) . Elliptical 

 or the anterior end somewhat broader, ovate; 

 green or colourless, and containing rose-red 

 vesicles ; lorica projecting beyond the body ; 

 length 1-570 to 1-240"; marine. 



BIBL. Ehr. Infus. 376 ; Kent, Inf. 



CHLAMIDOM'ONAS (PI. 30. fig. 30 a, 

 b } c, d, e). See PBOTOCOCCUS. 



CHLAMYDOCYSTIS, Grunow, = P>-o- 

 tococcus, part. 



CHLORAN'GIUM, Stein, =COLACIUM. 



CHLORAS'TER, Ehr. A genus of Fla- 

 gellate Infusoria. 



Char. Single, free, a single frontal eye- 

 spot, no tail, middle of the body with 'ra- 

 diate warty processes. 



Allied to the genera Glenomorum and 

 Phacelomonas. Does not admit coloured 

 particles. 



C. gyrans. Green, fusiform, acute at the 



