LEPTOTRICHUM. 



[ 385 ] 



LEUCOPHRYS. 



shaped. Peristome wanting, or simple; 

 teeth equidistant, more or less closely ap- 

 proximated at the base, bifid, dicranoid, 

 trabeculate below, arms articulate. Inflo- 

 rescence monoecious or dioecious. 



V. LEPTOTRICHUM. Calyptra dimidiate, 

 narrow, twisted. Peristome simple; teeth 

 sixteen, equidistant, subulate, ciliiform with 

 a median line, or slit into cilia so as to con- 

 stitute thirty-two teeth approximated in 

 pairs, confluent at the base into a more or 

 less elevated membrane, reddish. Capsule 

 annulate. Inflorescence monoecious or dioe- 

 cious. 



LEPTOTRICHUM, Hampe. A genus 

 of Acrocarpous operculate Mosses, including 

 certain Didymoda and Trichostoma of au- 

 thors. 



1 . Leptotrichum homomallum, Hinp. = 

 Didym. heteromallus, Hook, and Tayl. 



2. L. tortile, Hmp. var. pusillum = Di- 

 dym. pusillus, Hook. 



LEPTOTRICHUM, Corda. A genus of 

 Sepedonei (Hyphomycetous Fungi). 



LEPTUS, Lam. See TROMBIDIUM. 



L. autumnalis (Trombidium autumnale) is 

 the harvest-bug. 



LERNEONEMA, Edwards. A genus of 

 Crustacea, of the order Siphonostoma, and 

 family Penelladae. 



Char. Body long, slender, narrowed an- 

 teriorly in the form of a neck, which is ter- 

 minated by a swollen head, with two or 

 three simple, curved, horn-like appendages ; 

 abdomen of inconsiderable length, simple ; 

 oviferous tubes long and slender. 



Two British species : L. spratta (PL 14. 

 fig. 24); entire length 2 inches; and L. en- 

 crasicoli. Both found upon the sprat. 



BIBL. Baird, Brit. JZntomostraca, p. 

 339. 



LEUCOBRYACE^E. A family of oper- 

 culate Mosses arranged among the Acrocarpi, 

 but exhibiting also lateral fruit-stalks. The 

 leaves whitish, very fragile, composed of two 

 kinds of cells : 1. parenchymatous, columnar, 

 thick, empty cells, connected in several 

 layers, perforated; 2. intercellular duct-like 

 cells, interposed in a single curved row be- 

 tween those cells, 3-4-angled, filled with 

 chlorophyll-granules. 1-2 ductose cells, 

 situated in the middle of the leaf, prolonged 

 out from the curved row. Peduncle rigid, 

 very hygrometric, purple. Capsule oliva- 

 ceous, brown, or at length purple. Peri- 

 stome coloured in a similar manner, firm. 

 There is only one British genus : 



LEUCOBRYUM. Calyptra dimidiate, 



hood-shaped, exceeding the capsule, straw- 

 coloured. Capsule unequal, often strumose, 

 plaited in drying, often lateral by innova- 

 tion, terminal or distinctly lateral. Teeth 

 of the peristome sixteen, bifid, dicranoid, 

 densely trabeculate, purple. Intercellular 

 duct-like cells square ; one situated in the 

 middle of the leaf, mostly triangular. Leaves 

 without nerves. Inflorescence monoecious 

 or dioecious. 



1. Leucobryum vulgar e, Hampe = Dicra- 

 num glaucum, Hedw. 



The foliage of this plant is remarkable for 

 its pale colour, like that of the genus Sphag- 

 num, and the peculiar structure of the 

 cellular tissue renders it interesting. 



BIBL. Mohl, Vermischt. Schrift. p. 310. 



LEUCODON, Schwajgr. A genus of 

 Mosses. See Neckera. 



LEUCOPHRYINA. A family of Infu- 

 soria. 



Char. Body depressed, oval or oblong, 

 densely covered with cilia arranged in regular 

 rows ; no mouth. 



It comprises Spathidium hyalinum, D. 

 (Leucophrys spathula, E.), Leucophrys, D. 

 (not Ehr.), and Opalina, in which Dujardin 

 says that the existence of a mouth appears 

 to be indicated by an oblique fissure. 



BIBL. Dujardin, In/us, p. 458. 



LEUCOPHRYS, Mull. A genus of In- 

 fusoria, of the family Enchelia. 



Char. Body covered with cilia, mouth 

 without teeth, obliquely truncated, and with 

 a kind of lip. 



The cilia are arranged in rows upon the 

 body, and form a ring around the mouth. 



Ehrenberg describes eight species; they 

 are found in salt and fresh water, both sweet 

 and putrescent. 



L. patula (PI. 24. fig. 38, a dorsal, b ven- 

 tral surface). Body ovato-campanulate, hya- 

 line or white, turgid ; mouth large, patulous. 

 Aquatic and marine. Length 1-288 to 1-96". 

 The alimentary canal, with the sacculi, ac- 

 cording to Ehrenberg's view, is represented 

 in fig. 38 a. 



L. spathula (Spathidium hyalinum, D.) 

 (PL 24. figs. 75, 76). Body lanceolate, com- 

 pressed, whitish, membranous, obliquely 

 truncated and dilated in front; aquatic; 

 length 1-144". Dujardin denies the exist- 

 ence of the anterior row of cilia (omitted in 

 the figures). 



Dujardin constructs his genus Leucophrys 

 of (2) species found between the alimentary 

 canal and the tegumentary muscular stratum 

 of Lumbricus, with the characters: Body 



2 c 



