TRIPOSPORIUM. 



[ 655 ] 



TROMBIDIUM. 



minate (in the first summer)^, but produce 

 only a long, filiform process, probably the 

 rudimentof anewmyceliuin(seeUREDiNEi). 



BiBL. Berk. Brit. Flor. ii. pt. 2. p. 368 ; 

 Tulasne, Ann. des Sc. nat. ser. 4. ii. p. 181. 

 pi. 10; Fries, Smnma Veg. p. 513. 



TRIPOSPORIUM, Corda.— A genus of 

 Deraatiei (Hyphomycetous Fungi), charac- 

 terized by three lobed septate spores. T. 



Fig. 771. 



Triposporium elegans. 

 Magnified 200 diameters. 



ii 'io 

 elegans (fig. 771) has been found in this 

 country on bare oak trunks. Another spe- 

 cies, T. Gardneri, forms a blight on the 

 cofi^ee plantations of Ceylon. 



BiBL. Berk. Ann. Nat. Hist. 2 ser. vii. 

 p. 98 ; Hortic. Journal, iv. p. 8. 



TRITON, Laur.— A genus of Reptiles. 



If a male and female T. cristatus (fig. 



Fig. 772, 



^^^ 



772), one of the common water-newts, be 

 kept in a glass jar with healthy water-plants, 

 they will lay their eggs upon them. The 

 larvse are very beautiful microscopic objects, 

 for showing the circulation in the gills and 

 tail, the chorda dorsalis and the embryonic 

 tissues ; they should be kept in a vessel 

 separate from the parents, otherwise these 

 will devour them. 



The injected skin of T.palustris, the large 

 warty newt, forms a beautiful opake object ; 

 showing the loose capillary network, which 



contrasts well with the brilliantly mottled 

 skin. 



BiBL. Bell, British Reptiles. 



TROCHILIA, Duj.— A genus of Infu- 

 soria, of the family Ervilina. 



Char. Body irregularly oval, narrower in 

 front, where there are some vibratile cilia ; 

 carapace obliquely furrowed, slightly twisted, 

 and terminated behind by a moveable 

 pedicle ; no distinct mouth. 



T. sigmoides (PL 25. figs. 12 & 13). Body 

 narrowed and sinuous in front ; carapace 

 with five or six rounded oblique ribs ; 

 pedicle capable of adhering to the slide. 

 Marine ; length 1-630". 



Fig. 12 represents the animal undergoing 

 transverse division. 



TROMBIDIUM, Latr. — A genus of 

 Arachnida, of the family Trombidina. 



Char. Palpi large, free ; mandibles un- 

 guiculate ; body turgid, bearing the four 

 posterior legs, and an anterior narrow 

 moveable eminence, upon which the eyes, 

 the four anterior legs and the mouth are 

 situated ; anterior legs longest. 



The species are numerous and not well 

 characterized. 



T. phalangii (PI. 2. fig. 37). Body sub- 

 triangular, angles obtuse ; of a velvety ap- 

 pearance, from the presence of numerous 

 plumose hairs ; eyes two, placed upon auri- 

 cular appendages. 



An external parasite of Phalangium (the 

 harvest-spider) and insects, at least in its 

 early hexapodous stage. 



T. elongatum. Crimson ; eyes approxi- 

 mate. Found under stones. 



T. cinereum (PI. 2. fig. 40), {Rhyncholo- 

 phus ciner. Dug. Body with brown and 

 greyish-white spots ; hairs spathulate ; eyes 

 two on each side. Length 1-12". Found 

 in ditches amongst plants and stones. 



T. autumnale (PL 2. fig. 38), {Leptvs 

 autumn.). The harvest-bug. This well- 

 known, but imperfectly examined arach* 

 nidan insinuates itself into the human skin 

 in autumn, causing troublesome irritation. 

 It is found on plants and the stubble of corn- 

 fields, and may easily be caught by tying a 

 white pocket-handkerchief around the legs, 

 and walking through stubble-fields. The 

 young form with six legs is most frequently 

 met with. 



BiBL. Duges, Ann. d. Sc. nat. ser. 2. i. 

 36; Gervais, Walckenaer's Apteres, iii. 178; 

 Johnston, Transact, of Berwickshire Natu- 

 ralists' Club, 1847. 221 ; Koch, Deutschl. 

 Crust ac. Myriap. ^-c. 



