TUBICLAVA. 



[ 786 ] 



TUBURCINIA. 



tremely common in autumn and winter, on 

 dead sticks, damp wooden palings, stumps, 

 &c., forming scarlet-orange rounded nodules, 

 or irregular fleshy masses, sometimes more 

 or less stipitate, the surface at a certain stage 

 exhibiting the ends of the filaments termi- 

 nating in chains of cells breaking up into a 

 pulverulent substance. These cells are pro- 

 bably the couidia of the Nectri<2. 



TUBICLA'VA, Allman.— A genus of 

 Athecate Hydroid Zoophytes. 



Char. Stems erect, simple or branched, 

 arising from a creeping stolon ; polypes cla- 

 viform, with scattered filiform tentacles. 

 Reproduction by means of fixed sporosacs 

 in clusters on the body of the polype, behind 

 the posterior tentacle, or on very short stems 

 developed on the creeping base. 



BiBL. Hincks, Hyd. Zooph. 10 ; Allman, 

 Ann. N. K. 3. xi. 9. 



TUBICOLA'RIA, Ehr.— A genus of 

 Rotatoria, fam. Flosculariaea. 



Char. No eye-spot ; disk f our-lobed ; stalk 

 long, contained in a transparent gelatinous 

 sheath. T, najas, jaws with four teeth ; 

 on Lemna. (Elu'enberg, Infus. ; Pritchard, 

 Inf.) 



TU'BIFEX, Lamk.— A genus of Aunu- 

 lata, order Setigera. 



Char. Body filiform, attenuated at the 

 ends, pellucid, with four rows of setae — two 

 dorsal and two ventral. 



The worms live and burrow in the mud of 

 stagnant pools or the still parts of rivers, 

 giving it a bright-red appearance. When 

 the water or mud is disturbed, the red 

 patches instantly disappear, from the re- 

 traction of the animals. Length from 1-5 

 to 3-4" or more. 



They are transparent, and show well tbe 

 alimentarj^ canal, with its peristaltic actions, 

 and the cilia lining it, the blood-vessels and 

 their movements, with the loops bathed 

 in the chylaqiieous liquid, and the coiled 

 water- (respiratory or I'enal) vessels with 

 their cilia. 



BiBL. Schmidt, MiUlcr''s Archie, 1846, 

 406; Duges, Ann. Sc. Nat. 2. xv. 319; 

 Johnston, Ann.N.H. 1845, xvi. 443; Lan- 

 kester, Qu. Mic. Jn. 1871, 180. 



TUBULA'RIA, Linn.— A genus of 

 Hydroid Zoophytes, family Tubulariid^. 



BiBL. SeeTuBUL^VKIIDJE. 



TUBULA'RllD/E.— A family of Athe- 

 cate Hydroid Zoophytes. 



Char. Polypes fiask-shaped, with two sets 

 of filiform tentacles, one oral, the other near 

 the base. 



Tubularia. Stem twisted, branched or 

 unbranched ; tentacles fihf orm in two rows ; 

 egg-germs or gonophores on short footstalks, 

 clustered at the bases of the lower tentacles. 



Corymorpha. Partly enclosed; polypidom 

 short, thin, membranous, swollen at the base, 

 which is immersed in the sand ; polype 

 single, head club-shaped, encircled at the 

 base by long filiform tentacles, and a circle 

 of short ones around the tip. 



-Ectopleura. With free medusiform sexual 

 buds. 



BiBL. Hincks, Hijd. Zooph. 114; Lister, 

 Phil. Tr. 1834 ; Johnston, Br. Zooph. 48 ; 

 Mummerv, Qu. Micr. Jn. 1853, 28; Wright, 

 Ed. Neto Phil. Jn. 1858, 113; Allman, 

 Ann. N. Hist. July 1859, and July 1864 ; 

 Van Beneden, Ttibulmres. 



TUBULIP'ORA, Lam.— A genus of In- 

 f undibulate Cyclostomatous Polyzoa, of the 

 family Tubuliporidae. 



Three British species ; some of them 

 common upon shells, sea-weeds, &c. 



PL 41. fig. 30 represents a species (not 

 British). 



BiBL. Johnston, Br. Zooph. 266 ; Hincks, 

 Poh/z. 442. 



TUBULIPOR'ID^.— A family of lufun- 

 dibulate Cyclostomatous Polyzoa. 



Char. Polypidom calcareous, massive, 

 circular, lobed or divided dichotomously ; 

 cells long, tubular, with a round, prominent, 

 unconstricted orifice. Genera : 



Tubidipora. Wart-like, with a defined 

 base ; cells suberect, aggregated or in im- 

 perfect rows, more or less fi'ee at the end. 



Diastopora. Incrusting, undefined; cells 

 alternate, tubular, horizontal, immersed, 

 with a raised circular orifice. 



Idmonea. Divided dichotomously, erect ; 

 cells on one side, tubulai-, in transverse 

 rows, divided iiito two sets by a median 

 longitudinal line. 



Piistidipora. Erect, cylindrical ; cells 

 semi-immersed, on all sides, orifices pro- 

 minent. 



Alecto. Creeping, adherent, irregidarly 

 branched ; cells horizontal, in one or more 

 rows, their ends free. 



BiBL. Johnston, Br. Zooph. 264 ; Gosse, 

 Mar. Zool. ii. 7. 



TUBURCIN'IA, Fries.— A genus of 

 Ustilaginei (Hypodermous Fungi J, occur- 

 ring in vegetable tissues. 



T. scabies produces the disease called 

 scab in potatoes ; T. tricntalis occm-s on 

 leaves of Trientalis Etiropa'a ; conidia are 

 produced on the miderside of the leaves. 



