CRYPTOMONADINA. 



[ 175 J 



CRYPTONEMIACE^E. 



C. ccerulescens. Elliptic, depressed, emar- 

 ginate in front; bluish-green ; length I -6000". 

 Motion rapid ; no cilia distinguished. 



These organisms require further examina- 

 tion. 



BIBL. Ehr. In/us, p. 46; Duj. In/us, p. 

 333 



CRYPTOMONADINA, Ehr. A family 

 of Infusoria. 



Char. An envelope or carapace, either soft 

 or hard ; no appendages (organs of motion, 

 D.) except anterior cilia, or one or more fla- 

 gelliform filaments; form constant. (Envelope 

 insoluble in potash ?) 



These organisms do not admit colouring 

 matters, hence they should probably be re- 

 ferred to the Algae. 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., Chlamidomonas, E., Plceotia, D., 

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

 and Oxyrrhis, D.=Prorocentrum? E.) ; and 

 appends doubtfully Ch(Btoglena,E., and Chce- 

 totyphla, E. 



See THECAMONADINA, OPHIDOMONAS, 

 and PROTOCOCCUS. 



BIBL. Ehrenb. In/us, p. 38 ; Duj. Infus. 

 p. 323. 



CRYPTOMONAS, E. A genus of Infu- 

 soria, of the family Cryptomonadina. 



Char. No eye-spot ; carapace without an 

 anterior tooth. Dujardin says : Globular 

 or slightly depressed ; secreting a membra- 

 nous flexible carapace, and furnished with a 

 very delicate flagelliform filament. 



The species are not well characterized. 

 Ehrenberg admits seven, and to these Du- 

 jardin adds two. 



C. ovata, E. (PL 23. fig. 36 a) ; length 

 1-570"; aquatic. 



C. lenticularis, E. (PI. 23. fig. 36 6); 

 length 1-1730"; aquatic. 



C.fusca, E. (PI. 23. fig. 36 c); length 

 1-1500"; aquatic. 



C. globulus, D. (PI. 23. fig. 36 d] ; length 

 1-2500"; aquatic. 



C. inaqualis, D. (PI. 23. fig. 36 e); length 

 1-2506"; marine. 



Dujardin appends Cryptoglena, E. and 

 Lagenella, E. to this genus. 



BIBL. Ehr. Infus. p. 40; Dujardin, Infus. 

 p. 329. 



CRYPTONEMIACE^. A family of 

 Florideae. Purplish or rose-red sea-weeds, 

 with a filiform or (rarely) expanded, gelati- 

 nous or cartilaginous frond, composed wholly 

 or in part of cylindrical cells connected to- 

 gether into filaments. Axis formed of verti- 

 cal, periphery of horizontal radiating fila- 

 ments. FRUCTIFICATION : 1. Conceptacles 

 (favellidia), globose masses of spores im- 

 mersed in the frond or in swellings of the 

 branches. 2. Tetraspores variously dis- 

 persed. 3. Antheridia (Nemaleon). 



Subtribe 1. COCCOCARPE^E. Frond solid, 

 dense, cartilaginous or horny. Favellidia 

 contained in semi-external tubercles or swel- 

 lings of the frond. 



I. Grateloupia. Frond pinnated, flat, nar- 

 row, membranaceo-cartilaginous, of very 

 dense texture. Favellidia immersed in the 

 branches, communicating with the surface 

 by a pore. Tetraspores scattered. 



II. Gelidium. Frond pinnated, com- 

 pressed, narrow, horny, of very dense struc- 

 ture. Favellidia immersed in swollen ramuli. 

 Tetraspores forming sub-defined sori in the 

 ramuli. 



III. Gigartina. Frond cartilaginous, cy- 

 lindrical 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 

 solid, dense, cartilaginous or horny. Favel- 

 lidia of several imperfectly known. Wart- 

 like swellings composed of filaments, some- 

 times containing tetraspores, sometimes 

 spores. 



IV. Chondrus. Frond fan-shaped, dicho- 

 tomously cleft, cartilaginous, of very dense 

 texture. Tetraspores collected into sori, 

 immersed in the substance of the frond. 



V. Phyllophora. Frond stalked, rigid, 

 membranaceous, proliferous from the disk, 

 of very dense structure. Tetraspores in 

 distinct superficial sori or in special leaflet- 

 like lobes. 



VI. Peyssonelia. Frond depressed, ex- 

 panded, rooting by the under surface, con- 

 centrically zoned, membranous or leathery. 

 Tetraspores contained in superficial warts. 



VII. Gymnogongrus. Frond filiform, di- 



