LIMNOCHLIDE. 



[ 397 ] 



LITHOFELLINIC ACID. 



animal making its appearance at the end of 

 fifteen days. 



BIBL. Duges, Ann. d. Sc. nat. 2 ser. 

 i. p. 159; Gervais, Walckenaer's Arachn. 

 p. 208 ; Koch, Deutschlands Crust ac., fyc. 



LIMNOCHLIDE, Kiitz. See APHANI- 



ZOMENON. 



LINDIA, Duj. A genus of Rotatoria, of 

 the family Hydatinaea, E.(Furcularina, Duj.). 



Char. Body oblong, almost vermiform, 

 with transverse folds, rounded in front, but 

 no rotatory organ, cilia or eye; tail-like foot 

 with two conical and short segments or toes; 

 jaws very complicated (and imperfectly de- 

 scribed). 



L. torulosa (PI. 34. fig. 40). Aquatic; 

 length 1-75". 



BIBL. Dujardin, In/us, p. 653. 



LINDSJEA, Dryander. A genus of Lind- 

 sseese ( Polypodaeous Ferns) . Exotic (fig. 408) . 



LINDS^EE^E. A sub-tribe of Polypo- 

 daeous Ferns with indusiate sori. 



SCHIZOLOMA. Sorus infra-marginal, li- 

 near, continuous. Indusium linear, elon- 

 gated, continuous, parallel with the margin 

 of the leaf, free outside. Veins anastomo- 

 sing in hexagonoid meshes. 



DICTYOXIPHIUM. Sorus infra-marginal, 

 linear, continuous. Indusium linear, elon- 

 gated, continuous, parallel to the margin of 

 the leaf, free outside. Veins anastomosing, 

 with free venules. 



LINDS^A. Sorus infra-marginal, linear, 

 continuous. Indusium linear, elongated, 



Fig. 408. 



Lindsaea. 

 A pinnule. Magn. 10 diams. 



continuous, parallel with the margin of the 

 leaf,free outside. Veins dichotomous(fig.408). 



LINUM, L. See FLAX. 



LIOTHEUM, Nitzsch. A genus of In- 

 sects, of the order Anoplura, and family 

 Liotheida3. 



Char. Antennae clavate or capitate ; max- 

 illary palpi conspicuous ; mouth with strong 

 mandibles ; tarsi with two claws. 



Antennae four-jointed; mandibles with two 

 teeth; maxillary palpilong,filiform,4-jointed ; 

 labial palpi very short, two-jointed. 



The genus has been subdivided into seven 

 subgenera. The species are very numerous, 

 and are parasitic upon birds. 



L. (Menopon) pallidum (PI. 28. fig. 7). 

 Elongate, of a pale straw colour, shining and 

 smooth ; head slightly sinuate on each side, 

 with a dark pitchy spot before each eye. 

 Length 1-24 to 1-16". Common upon the 

 domestic fowl. 



BIBL. Denny, Anoplur. Monographic*, 

 p. 204. 



L[THIC ACID. See URIC ACID. 



LITHOBROCHYA, Presl. A genus of 

 Pterideae (Polypodaeous Ferns). Exotic. 



LITHOCYSTIS, Allm. A genus of Co- 

 rallinaceae (Florideous Algae), consisting of a 

 single species, L. Allmanni, Hass., which 

 has been found as an epiphyte, forming 

 minute white dots upon Chrysimenia clavel- 

 losa. The minute dots consist of one or 

 more fan-shaped fronds composed of square 

 cells. The plant is colourless, brittle, and 

 effervesces in acid. The fan-shaped frond 

 somewhat resembles in structure imperfect 

 or segmental fronds of COLEOCH^ETE. 



BIBL. Hass. Brit. Mar. Ala. p. 111. pi. 

 14 B; Phyc.Brit.pl 166. 



LITHODESMIUM, Ehr. A genus of 

 Diatomaceae. 



Char. Frustules in side view triangular, 

 united so as to form a prismatic filament. 

 Marine. 



L. undulatum (PL 13. fig. 4 a, front view, 

 4 b, side view). Surface without markings, 

 very pellucid, two of the sides undulate, the 

 third plane and with two marginal notches ; 

 angles obtuse; length of joints 1-480". 



This organism requires further examina- 

 tion ; its Diatomaceous structure is very 

 obscure. 



BIBL. Ehrenberg, Abhandl. d. Eerl. Akad. 

 1840; Kiitzing, Bacill p. 135, and Sp. Alg. 

 p. 133. 



LITHOFELLINIC ACID. This sub- 

 stance is a component of certain concretions 

 called bezoars, and found in the alimentary 

 canal of various kinds of goat in the East, as 

 in Persia, &c. 



It is crystalline, insoluble in water, readily 

 so in hot alcohol, but little in aether. 



The perfect crystals form six-sided prisms 

 with truncated ends; but when somewhat 



