KNIFE. 



[ 451 1 



LAFO'EA. 



KNIFE, VALENTIN'S. INTRODUC- 

 TION, p. xxvi. 



KONDYLOSTOMA, Duj. A genus of 

 Infusoria, of the family Bursarina. 



Char. Body elongated, cylindrical or 

 fusiform, slightly arcuate, the ends obtuse 

 and depressed, with a very large mouth 

 margined with stout cilia, and situated late- 

 rally at the anterior end ; surface obliquely 

 striated and ciliated. 



K. patens (PL 31. fig. 31 ; fig. 32, slightly 

 compressed). 



BIBL. Duj. In/us. 516; Clap, et Lach. 

 Inf. 244. 



KRAUSKS CORPUSCLES. The ter- 

 minal bulbs of the nervous plexus and in- 

 terlacing nerve-fibres of the conjunctiva. 

 They consist of a connective-tissue sheath 

 with nuclei, an internal bulb of finely granu- 

 lar dull-shining material, within which is a 

 pale terminal fibre with a somewhat thick- 

 ened end. 



BIBL. Krause, U. term. Korper, 1868; 

 Strieker, Gewebe, ii. 123. 



KRITHE ; B., C., and R. See ILYOBATES. 



LABREL'LA, Fr. A genus of Phaci- 

 diacei (Ascomycetous Fungi), growing upon 

 living leaves. L. Ptarmicce, t)esm., grows 

 upon the leaves of AchiUea Ptarmica. 



BIBL. Berk. Ann. N. H. i. 208, pi. 7. 

 fig. 7 ; Fries, Summa Veg. 422. 



LABYRINTHODON ; TA. A group of 

 extinct Amphibia. Transverse sections of 

 the teeth of the species of this group are 

 beautiful microscopic objects. 



BIBL. Owen, Odontography. 



LABYRIN'THULA, Cienkow. A ge- 

 nus or group of Protozoa. Composed of 

 microscopic, thin, reticular, colourless, rigid 

 filaments, on which fusiform bodies glide 

 very slowly in various directions ; the fila- 

 ments arise from imbedded globular red or 

 yellow masses. Two species, on submerged 

 posts; Odessa. 



BIBL. Cienkowski, Arch. mik. An. iii. 

 274. 



LACE-BARK. See THYMELEACEJE. 



LACINULARIA, Oken. A genus of 

 Rotatoria, of the family Flosculariaea. 



Char. Eyes two (when young); urceolior 

 gelatinous sheaths aggregated into a spheri- 

 cal mass ; rotatory organs with two lobes. 



L. socialis (PI. 50. fig. 15). Urceoli ge- 

 latinous, yellowish; rotatory organ veiy 

 broad, in the form of a horseshoe {fr. wat. ; 

 length 1-36". 



BIBL. Ehrenb. Inf. 403; Huxley, Mic. 

 Jn. 1852 ; Leydig, Siebold und Koll. Zeit. 

 1852 ; Ukedem, Ann. Sci. N. 3 se"r. 1851 j 

 Cubitt, M. Mic.Jn. 1872-73. 



LACRYMA'RIA, Bory. A genus of 

 Infusoria, of the family Trachelina, Clap, et 

 Lach. 



Char. Body rounded behind, not ciliated ; 

 with a long and slender neck, which is 

 dilated at the end, and furnished with a 

 ciliated mouth and a lip, but no teeth 

 (= Trachelocerca without a tail). 



L. proteus, syn. L. olor. Body oblong, 

 turgid, colourless, with delicate oblique 

 striae ; neck very long ; freshwater ; length 

 1-140''. 



Two doubtful species : one (L. guttd) 

 colourless and without striae; the other 

 (L. rugosd) containing green matter, with 

 the body wrinkled. Claparede describes 

 two other species. 



BIBL. Ehrenb. Inf. 309; Duj. Inf. 468; 

 Clap, et Lach. Inf. ; Kent, Inf. 517. 



LACTA'RIUS. A genus of Hymeno- 

 mycetous Fungi, distinguished from Agari- 

 cus by the inner substance of the gills 

 (trama) being vesicular instead of filamen- 

 tous. Most of the species abound in milky 

 juice; and several of them are esculent. 

 Amongst the most approved is L. deliciosus, 

 remarkable for its bright orange-coloured 

 milk. Some acrid species, however, as L. 

 piperitus, are largely consumed in Russia, 

 having first in general been preserved in 

 salt and vinegar. The milk is contained in 

 peculiar vessels, similar to the laticiferous 

 vessels of Phanerogams. See LATICIFE- 

 BOUS TISSUE. 



BIBL. Fr. Epicr. 333 ; Berk. Outl. 203 ; 

 Cooke, Handb. 206; Corda, Jc., fasc. 4, 

 pi. 10. fig. 139. 



LACTATES. See the bases lactate of 

 lime (PI. 11. fig. 19), lactate of zinc (fig. 



LACTEALS. See VILLI. 



L^EMAR'GUS, Kroyer, A genus of 

 Crustacea, of the order Siphonostoma, and 

 family Cecropidas. 



L. muricatus. Found upon the sun-fish 

 (Orthagoriscus mold). Length of female 1"; 

 male much smaller. 



BIBL. Baird, Brit. Entomos. p. 293. 



LAFO'EA, Lamx. A genus of Lafoeidae, 

 of the suborder Thecaphora (or Hydroida 

 with true calycles). 



Char. Stem a simple creeping tubular 

 fibre, or erect and composed of many tubes 

 aggregated together, rooted by a filiform 



"2G 2 



