CH.ETOMORPHA. 



[ 130 ] 



CILETOTYPHLA. 



CILETOMORPHA, Kiitz.=CoNFERVA 

 spec. 



CH.ETONOTUS, Ehr. A genus of mi- 

 croscopic aquatic animals, placed by Ehren- 

 berg among the Rotatoria (Rotifera), and by 

 Dujardin with the Infusoria. 



Ehrenberg places it in the family Ichthy- 

 dina( which. see). Dujardin gives the follow- 

 ing characters : 



Body oblong, convex, and furnished with 

 hairs or scales above ; flat and provided with 

 very minute vibratile cilia beneath ; termi- 

 nated in front by a rounded margin, near 

 which is a distinct mouth ; posteriorly bi- 

 furcate or terminated by two caudiform pro- 

 cesses. 



The three or four species are found in 

 fresh water, amongst aquatic plants. Their 

 structure requires further investigation. 



Chatonotus larus (PL 24. fig. 24). Length 

 1-710 to 1-220". 



Dujardin appends Ichthydium, Ehr. to this 

 genus. 



BIBL. Ehr. In/us, p. 389; Duj. In/us. 

 p. 568. 



CH.ZETOPHORA, Schrank. A genus of 

 Cha3tophorace8e(ConfervoidAlg8e),character- 

 ized likeDraparnaldiaby setigerous branched 

 filaments, but differing from the latter by 

 the filaments being imbedded in a gelatinous 

 matrix. The Chatophora are found in 

 fresh water, forming little green protuber- 

 ances on stones, sticks, &c., usually bright 

 green. The zoospores are formed singly in 

 the joints, and bear four cilia. The account 

 of the fructification given by Miiller (Flora, 

 1842. p. 513) seems to relate to Coleoch&te. 



The membrane of the filaments is very 

 delicate, and the zoospores appear some- 

 times to escape by its solution. Br. species : 



1. C. endimcefolia, Ag. Hassall, Br. Fr. 

 Alg. pi. 9. figs. 1, 2; Kiitz. Tab. Phyc. iii. 

 pi. 21 . fig. 3. Ulva incrassata, Eng. Bot. 967. 

 Common in streams. 



2. C. tuberculosa, Hook. Hass. L c. pi. 9. 

 7, 8; Kiitz. L c. pi. 19 and 21. Rivularia 

 tuberculosa, Eng. Bot. 2366. Boggy pools. 



3. C. elegans, Ag. Hass. 1. c. pi. 9. 3, 4; 

 Kiitz. /. c. pi. 20. Stagnant pools; com- 

 mon. 



4. C. pisiformis, Ag. Hass. I. c. pi. 9. 5, 

 6 ; Greville, Crypt, t. 150 ; Kiitz., L c. pi. 18; 

 Thuret, Ann. des Sc. nat. 3 ser. xiv. pi. 19. 

 fig. 1-3. Subalpine lakes. 



5. C. dilatata, Hass. L c. pi. 13. fig. 2. 



6. C. longceva, Carm. A doubtful species. 

 Hook. Br. Flora, vol. ii. pt. 1. 



BIBL. As above. 



CILETOPHORACILE. Afamily of Con- 

 fervoid Algae, growing in sea or fresh water, 

 invested with gelatine ; either filiform or (a 

 number of filaments being connected toge- 

 ther) expanded into gelatinous, branched, 

 definitely-formed or shapeless fronds or 

 masses. Filaments jointed, furnished with 

 bristle-like processes. Fructification con- 

 sisting of spores and four-ciliated zoospores, 

 formed out of the contents of the articula- 

 tions. 



Synopsis of British Genera. 



1. Draparnaldia. Filaments free, gelati- 

 nous, the primary nearly colourless, bearing 

 tufts of coloured ramuli at the joints ; zoo- 

 spores formed singly in the joints of the ra- 

 muli. 



2. Chcetophora. Filaments aggregated 

 into shapeless, incrusting or branched gelati- 

 nous fronds, the joints bearing bristle-like 

 branches ; zoospores solitary in the articula- 

 tions ; the membranes of the filaments very 

 fugacious. 



3. Bulbochcete. Filaments free, each joint 

 truncate at the apex, and bearing there either 

 an articulate deciduous bristle bulbous at the 

 base, or a sessile inflated cell crowned by a 

 bristle. Zoospores and spores formed in the 

 inflated cells or in the bulbs of the bristles. 



4. Coleochcete. Frond disk-shaped or ir- 

 regularly expanded, adherent to leaves, &c. 

 of aquatic plants under water, formed of 

 jointed dichotomous filaments radiating from 

 a centre, more or less conjoined laterally ; 

 the joints producing from the back a trun- 

 cate open sheath, from which a long bristle 

 is exserted. Fructification : spores and zoo- 

 spores formed in the joints. 



5. Ochlochcete. Frond discoid, appressed ; 

 filaments cylindrical, radiating from a centre, 

 irregularly branched, consisting of a single 

 series of cells, each of which is commonly 

 prolonged above into an inarticulate bristle. 



Foreign genus. See APHANOCH^TE, 

 Kiitz. 



BIBL. See the genera. 

 CH^TOPSIS, Greville=DEMATiUM. 

 CHJETOSTROMA, Corda. See VOLU- 



TELLA. 



CELETOTYPHLA, Ehr. A genus of In- 

 fusoria, of the family Peridina3a. 



Char. Carapace (siliceous?) hispid or co- 

 vered with rigid hairs ; no transverse furrow, 

 no eye-spot. 



C. armata (PI. 23. fig. 26 : a, side-view, 

 b, posterior end view). Ovato-subglobose, 

 rounded at each end, hispid, with short setae, 



