CRITTOMONAS. 



[ 217 ] 



CRYPTONEMIACE^. 



soft or hard ; no ajipendagres (organs of mo- 

 tion, D.) except anterior cilia, or one or 

 more fiagelliform filaments ; form constant. 

 (Envelope insoluble in potash ?) 



These organisms do not adn)it colouring- 

 matters, hence they should probably be re- 

 ferred to the Algaj. One or more cilia or 

 fiagelliform filaments have been detected in 

 all the genera but one (Lm/eneUa). 



The family corresponds very nearly with 

 the Thecamonadina of Dujardin. 



No eye-spot. 

 Carapace with a distinct tooth in front Prorocentrum . 

 Carapace without a tooth Cryptomonas. 



E}-e-spot present. 



Carapace with a nock Lagenella. 



Carapace without a neck : — 



Carapace a scutoUum Crt/pfoglena. 



Carapace not a scutellum Trachelomonas. 



Dujardin adds the genera Phociis, D. {\n- 

 c\\\Cti\\g Eu(/le)ia,T^. in part), CrumenuJa, D., 

 Diselmis, D., Clami(loinonas,^.,Plceotia,J),, 

 Anisonema, D. (including Bodo (jrandu, E., 

 and 0.vyrr/ns,D. = Prorocentrum: E.); and 

 appends doubtfully Chatoglena, E., and 

 Chcctotyplda, E. 



See Thecamonadina, Ophidomonas, and 

 Peotococcus. 



BiBL. Ehrenb. Infus. 38 ; Duj. Infus. 32-3. 

 CRYPTOMOXAS, E.— A geniis of In- 

 fusoria, of the family Cryptomonadina. 



Char. No eye-spot ; carapace without an 

 anterior tooth. Dujardin says : Globular or 

 slightly depressed ; secreting a membranous 

 flexible carapace, and furnished with a very 

 delicate fiagelliform filament. 



Ehrenberg admits seven species ; and to 

 these Dujardin adds two. 



C. ovata, E. (PI. 30. fig. 36 a) ; length 

 1-570" ; freshwater. 



C. lentkularis, E. (PI. 30. fig. 36 b) ; length 

 1-1730" ; freshwater. 



a fitsca, E. (PI. 30. fig. 36 c) ; length 

 1-1500"; freshwater. 



a (/lobuhis, D. (PI. 30. fig. 36 d) ; length 

 1-2500" ; freshwater. 



a incBqualis, D. (PL 30. fig. 36 e) ; length 

 1-2500" ; freshwater. 



Dujardin appends Cryptoglena, E., and 

 LaqeueUa, E., to this genus. 



BiBL. Ehr. Inf. 40 j Dujardin, Inf. 329; 

 Kent, Inf. 404. 



CRYPTONEMIA'CE^.— A family of 

 Floride?e. Purplish or rose-red sea-weeds, 

 with a filiform or (rarely) expanded, gela- 

 tinous or cartilaginous frund, composed 

 wholly or in part of cylindrical cells con- 

 nected together into filaments. Axis formed 

 of vertical, periphery of horizontal radiating 



filaments. Fructification: — 1. Concep- 

 tades (favellidia), forming globose masses of 

 spores immersed in the frond or in swell- 

 ings of the branches. 2. Ji2('?-rt.s;jores variously 

 dispersed. 3. Antheridia (Nemaleon). 



Subtribel. CoccoCAiirE.TS. Frond solid, 

 dense, cnrtilaf/inous or horny. Favellidia 

 contained in semi-external tubei'cles or sioell- 

 ings of the frond. 



Grateloiipia. Frond pinnate, flat, nar- 

 row, membranaceo-cartilag-inous, of very 

 dense texture. Favellidia immersed in the 

 branches, communicating with the surface 

 by a pore. Tetraspores scattered. 



Gelidimn. Frond pinnate, compressed, 

 narrow, homy, of very dense structure. 

 Favellidia immersed in swollen ramuli. 

 Tetraspores forming subdefined sori in the 

 ramuli. 



Giyartina. Frond cartilaginous, cylin- 

 drical or compressed ; its flesh composed 

 of anastomosing filaments, lying apart in 

 firm gelatine. Favellidia contained within 

 external tubercles. Tetraspores massed to- 

 gether in dense sori, sunk in the frond. 



Subtribe2. SpoNCiioCARPE.^. Frond so- 

 lid, dense, cartilaf/inoi/s or horn^. Favellidia 

 of several, imperfectly hnoion. Wart-like 

 swellings coinposed of Jilaments ; sometiynes 

 containing tetraspores, sometimes spores. 



Chondrus. Frond fan-shaped, dicho- 

 tomously cleft, cartilaginous, of very dense 

 texture. Tetraspores collected into sori, im- 

 mersed in the substance of the frond. 



PhyUophora. i^/-o»f? stalked, rigid, mem- 

 branaceous, proliferous from the disk, 

 of very dense structure. Tetraspores in dis- 

 tinct superficial sori, or in special leaflet- 

 like lobes. 



Peyssonelia. Frond depressed, expanded, 

 rooting by the under surface, concentrically 

 zoned, membranous or leathery. Tetra- 

 spores contained in superficial warts. 



Gymnogongrus. Frond fihform, dicho- 

 tomus, liorny, of very dense structure. 

 Tetraspores strung together, contained in 

 superficial wart -like sori. 



Polyides. Foot scutate. Frond cylin- 

 drical, dichotomous, cartilaginous. Favellm 

 contained in spongy external warts. Tetra- 

 spores scattered through the peripheric stra- 

 tum of the frond, cruciate. 



Furcellaria. Foot branching. Frond 

 cylindrical, dichotomous, cartilaginous. Fa- 

 vellcp. imknown. Tetraspores deeply im- 

 bedded among the filaments of the periphery, 

 in the swollen pod-like upper branches ox 

 the frond, transversely zoned. 



