TUBIOLAVA, 



[ 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 conidia of the Nectrice. 



TUBICLA'VA, Allinan. 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 ; Allinan, 

 Ann. N. H. 3. xi. 9. 



TUBICOLA'RIA, Ehr. A genus of 

 Rotatoria, fam. Floscularisea. 



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

 long, contained in a transparent gelatinous 

 sheath. T. najas, jaws with four teeth ; 

 on Letnna. (Ehrenberg, Infus. ; Pritchard, 

 Inf.) 



TU'BIFEX, Lamk. A genus of Annu- 

 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 the 

 alimentary canal, with its peristaltic actions, 

 and the cilia lining it, the blood-vessels and 

 their movements, with the loops bathed 

 in the chylaqueous liquid, and the coiled 

 water- (respiratory or renal) vessels with 

 their cilia. 



BIBL. Schmidt, Mailer's Archiv, 1846, 

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

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

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



TUBULA'RIA, Linn. A genus of 

 Hydroid Zoophytes, family Tubulariidse. 



BIBL. See TUBULABIIDJE. 



TUBULA'RIID^E. A family of Athe- 

 cate Hydroid Zoophytes. 



Char. Polypes flask-shaped, with two sets 

 of filiform tentacles, one oral, the other near 

 the base. 



Tubular ia. Stem twisted, branched or 

 unbranched ; tentacles filiform in two rows ; 

 e^g-gerins 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. 



Ectopkura. With free medusiform sexual 

 buds. 



BIBL. Hincks, Hyd. Zooph. 114; Lister, 

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

 Mummery, Qu. Mia-. Jn. 1853, 28; Wright, 

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

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

 Van Beneden, Tubulaires. 



TTJBULIP'ORA, Lam. A genus of In- 

 f undibulate Cyclostomatous Polyzoa, of the 

 family Tubuliporidse. 



Three British species ; some of them 

 common upon shells, sea-weeds, &c. 



PL 41. ng. 30 represents a species (not 

 British). 



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

 Polyz. 442. 



TUBULIPOR'Hm A family of Infun- 

 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 free at the end. 



Diastopora. Incrusting, undefined; cells 

 alternate, tubular, horizontal, immersed, 

 with a raised circular orifice. 



Idmonea. Divided dichotomously, erect ; 

 cells on one side, tubular, in transverse 

 rows, divided into two sets by a median 

 longitudinal line. 



Piistulipora. Erect, cylindrical ; cells 

 semi-immersed, on all sides, orifices pro- 

 minent. 



Alecto. Creeping, adherent, irregularly 

 branched ; cells horizontal, in one or more 

 rows, their ends free. 



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

 Mar. Zool ii. 7. 



TUBURCINIA, Fries. A genus of 

 Ustilagiuei (Hypodermous Fungi), occur- 

 ring in vegetable tissues. 



T. scalies produces the disease called 

 scab in potatoes; T. trientalis occurs on 

 leaves of Trientalis Europcca ; conidia are 

 produced on the underside of the leaves. 



