TRIOHOMANES. 



C 781 ] 



TRICHORMUS. 



TRTCirOM'ANES,^ Linn.— A genus of 

 Ilyuiouophyllaceous Ferus, of elegaut aud 

 delicate uabit. 



Fig. 761. 



Fig 762. 



Trichomanes alatum. 



Fig. 761. A pinnule. Magnified 5 diameters. 



Pig. 7(52. Section through a sorus, showing the vein 

 prolonged as a columella, and continued out beyond the 

 border. Magnified 25 diameters. 



Fig. 763. 



A sjiorange, with horizontal anuulus. Magnified 100 

 diameters. 



Many species ; tropical. T. hrevisetum 

 {radicans), British. (Hooker, Syn. 79.) 



TRICHOM'ONAS, Donne.— A genus of 

 Flagellate Infusoria. 



Char. Free, soft, ovate, with two anterior 

 and one posterior flagella, and a dentate 

 lateral undulating membrane ; no mouth. 



T. batrachorum, in the intestine of frog 

 and toad. 



T. vcujinalis (PI. 32. fig. 9). Body glu- 

 tinous, nodular, unequal, frec[uently be- 

 coming agglutinated to other objects; move- 

 ment vacillating ; length 1-2500". Found 

 in morbid vaginal mucus. 



T. limacis (PI. 32. fig. 10). Body ovoid, 

 smooth, pointed at each end; movement 

 forwards, by revolution upon its axis ; 

 length 1-1600". Found in the intestine of 

 Limax agrestis. 



BiBL. Dujardin, Infiis. 299; Kent, Bif. 

 308. 



TRICHONE'MA, From.— A genus of 

 CUio-Flagellate Infusoria. Free, ovate, 

 variable ; flagellum single; body with short 



cilia. T. /drsuta; h-eshwatev. (Kent, Inf. 

 409.) 



TRICHONYM'PHA, Leidy.— A genus 

 of Ilolotrichous Infusoria. 7\ Of/i/is, in the 

 intestine of the American white ant. 

 (Leidy, Pi'oc. Ac. Philadvlphia, 1881 ; Kent, 

 Inf. 533.) 



TRIOHOPH'RYA, 01. & Lachm.— A 

 genus of Acinetina. Like PodojjJtrya, but 

 fixed without a pedicle ; tentacles in scat- 

 tered bundles; vesicles numerous; nucleus 

 band-like. Two species ; on the stalk of 

 EinstyHs pliccdilis, aud on Entomostraca. 

 (CI. & Lachm. Inf. 386; Kent, /«/. 811.) 



TRICHOPH'YTON. See P.vbasites. 



TRIC'HOPUS, Clap. & Each.— A genua 

 of Hypotrichous Infusoria. 



Char. Body depressed, with a bundle of 

 long ventral cirri near the posterior end of 

 the body ; a tuft of caudal cilia, and a group 

 of pharjTigeal teeth. 



T. dysteria ; marine. (Claparede & Lach- 

 mann. Inf. 338.) 



TRICHOR'MUS {Anahcena, Bory, Bre- 

 bisson, Kiitzing, Montague, «.tc.). — A genus 

 of Nostochacese (Confervoid Algse), grow- 

 ing on wet earth, and rising to the surface of 

 lakes, brackish ditches, &c., forming an in- 

 determinate stratimi, at first nearly colour- 

 less aud transparent, with the filaments 

 sparingly scattered through the mass; the 

 filaments afterwards increasing rapidly in 

 number, causing the mass to become opaque ; 

 deep bluish green, and occasionally mottled 

 with brown, especially beneath. Filaments 

 mostly short and moniliform. Cells more 

 or less globular ; the spermatic cells resem- 

 bling tlie ordinary cells more in this than 

 in the allied genera. The filaments closely 

 resemble those of Nostoc ; and some of the 

 floating aquatic species can only be distin- 

 guished from that genus by the absence of 

 definite form or size, and of the hardened 

 peridenn. It differs from Dolichos])cnnmn 

 in the globular shape of its sporangia, aud 

 from Sphterozyya and Cylindrospermiim in 

 the arrangement of its vesicular and sper- 

 matic cells, which are in Trichormus sepa- 

 rated by ordinary ceUs. In PI. 8. fig. 2, we 

 have represented what appears to be a new 

 species. 



T. Jlo&-aqu<s. Filaments flexuous or 

 ciu'ved, moniliforn\; cells orbicular, vesi- 

 cular ones larger, terminal aud interstitial. 

 Ralfs, Ann. N. H. 2. v. pi. 8. fig. 2. Anor 

 baina Jl.-aq., Kiitz. S^). Ah/. ; Trichormus 

 incurvatus, AUman, Ann. N. H. xi. 163; 

 HassaU, AUjce, pi. 75. Rising to the surface 



