CEYPTOMONAS. 



[ 217 ] 



CRYPTONEMIACE^E. 



soft or hard ; no appendages (organs of mo- 

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

 more flagelliforin filaments j form constant. 

 (Envelope insoluble in potash ?) 



These organisms do not admit colouring- 

 matters, hence they should probably be re- 

 ferred to the Algsd. One or more cilia or 

 flagelliform filaments have been detected in 

 all the genera but one (Lagenella). 



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. 



Eye-spot present. 



Carapace with a neck Lagenella. 



Carapace without a neck : 



Carapace a scutellum. Cryptoglena. 



Carapace not a scutellum Trachelomonas. 



Dujardin adds the genera Phacus, D. (in- 

 cluding Euglena, E. in part), Crumenula, D., 

 Diselmis, D., Clamidornonas,l&.,Plceotia,~D., 

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

 and Oxyrrhis, D.= Prorocentrum: E.)j and 

 appends doubtfully Chcetoglena, E., and 

 Chcetotyphla, E. 



See THECAMONADINA, OPHIDOMONAS, and 

 PROTOCOCCUS. 



BIBL. Ehrenb. In/us. 38 ; Duj. Infus. 323. 

 CRYPTOMONAS, E. A genus 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 flagelliform filament. 



Ehrenberg admits seven species ; and to 

 these Dujardin adds two. 



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

 1-570" ; freshwater. 



C. lenticularis, E. (PI. 30. fig. 36 6) ; length 

 1-1730" ; freshwater. 



C.fusca, E. (PI. 30. fig. 36 c) j length 

 1-1500"; freshwater. 



C. globulus, D. (PI. 30. fig. 36 d) ; length 

 1-2500" ; freshwater. 



C. inaqualis, D. (PI. 30. fig. 36 e) ; length 

 1-2500" ; freshwater. 



Dujardin appends Cryptoglena, E., and 

 Lagenella, E., to this genus. 



BIBL. Ehr. Inf. 40 ; Dujardin. Inf. 329: 

 Kent, Inf. 404. 



CRYfcTONEMIA'CELE. A family of 

 Florideae. Purplish or rose-red sea-weeds, 

 with a filiform or (rarely) expanded, gela- 

 tinous or cartilaginous frond, 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- 

 tacles (favellidia), forming globose masses of 

 spores immersed in the frond or in swell- 

 ings of the branches. 2. Tetraspores variously 

 dispersed. 3. Antheridia (Nemaleori). 



Subtribel. COCCOCARPEJE. Frond solid, 

 dense, cartilaginous or horny. Favellidia 

 contained in semi-external tubercles or swell- 

 ings of the frond. 



Grateloupia. Frond pinnate, flat, nar- 

 row, membranaceo-cartilaginous, of^ very 

 dense texture. Favellidia immersed in the 

 branches, communicating with the surface 

 by a pore. Tetraspores scattered. 



Gdidium. Frond pinnate, compressed, 

 narrow, horny, of very dense structure. 

 Favellidia immersed in swollen ramuli. 

 Tetraspores forming subdefined son in the 

 ramuli. 



Gigartina. 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. 



Subtribe 2. SPONGIOCARPE^E. Frond so- 

 lid, dense, cartilaginous or horny. Favellidia 

 of several, imperfectly known. Wart-like 

 swellings composed of filaments ; sometimes 

 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. 



Phyllophora. Frond 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 filiform, dicho- 

 tomus, horny, of very dense structure. 

 Tetraspores strung together, contained in 

 superficial wart-like sori. 



Polyides. Hoot scutate. Frond cylin- 

 drical, dichotomous, cartilaginous. Favellee 

 contained in spongy external warts. Tetra- 

 spores scattered through the peripheric stra- 

 tum of the frond, cruciate. 



Furcellaria. Root branching. Frond 

 cylindrical, dichotomous, cartilaginous. Fa- 

 vellce unknown. Tetraspores deeply im- 

 bedded among the filaments of the periphery, 

 in the swollen pod-like upper branches ox 

 the frond, transversely zoned. 



