LOPHOCOLEA. 



[ 401 ] 



LUNGS. 



llied genera by the remarkable form of the 

 lerithecia. 



BiBL. Berk. Brit. Flor. ii. pt. 2. p. 280; 

 ''ries, Syst. Myc. ii. p. 533, Summa Veg. p. 

 01; Greville, Sc. Crypt. Flor. pi. 177. 



LOPHOCOLEA, Nees. — A gemis of 

 ungermaniiie8e(Hepaticace8e), including the 

 . hidentata, L. and J. heteropItyUa, Schrad., 

 rowing in moist situations, at the roots of 

 L'ees, &c. 



BiBL. Hook. Brit. Jungerm. pi. 30, 31, 

 Wit. Flor. ii. pt. 1. p. 122. 



LORICA. See Carapace. 



LOUSE. See Pediculus and Ano- 



LURA. 



LOXODES, Ehr.— A genus of Infusoria, 

 F the family Traehelina. 



Char. Body covered with rows of cilia; 

 teeth ; anterior and u])per jjortion of the 

 ody (lip) obliquely truncate, or bent towards 

 ae side (hatchet-shaped, E.), and with a row 

 r large cilia. Ehrenberg describes four 

 )ecies. 



L. bursaria, E. {Paramecium, bursaria, 

 ocke) (PI. 24. fig. 41). Oblong, green, 

 iterior end depressed and obliquely trun- 

 ite, posterior end rounded and turgid ; 

 juatic ; length 1-288". 



The rotation of the contents of the body 

 kes place in this infusorium. Repro- 

 iction by the formation of swarm-germs, 

 icording to the process 2 b (p. 235), has also 

 ;en observed. 



L. rostrum, E. {Pelecida rostrum, D.) (PL 

 [. fig. 39). White, lanceolate, anterior por- 

 m bent on one side; aquatic; length 1-144 



1-60". 



Dujardin's genus Loxodes does not agree 



ith that of Ehrenberg ; but, according to 



;ein, the observations upon which the dif- 



I'euces are founded depend upon fault}^ 



iservation. 



Thus L. cucullulus, D. and L. dentatus, D. 



1. 24. fig. 40) are young states of Chilodon 



cullulus, E. ; and L. reticulatus, D. is the 



me infusorium distended with alimentar}^ 



atters. 



BiBL. Ehrenberg, Infus. p. 323; Dujar- 



n, Infus. p. 449 ; Stein, Infus. p. 238, &c. 



id the Bibl. 



LOXOPHYLLUM, Duj.— A genus of 



fusoria, of the family Paramecia. 



The species belong to the genera Amphi- 



jtus, E. and Trachelius, E. See Para- 



ECIA. 



BiBL. Dujardin, Infus. p. 487. 

 LOXSOMA, R. Brown.— A genus of Hy- 

 enophyllaceous Ferns, distinguished by the 



projecting column bearing the sporangia 

 (figs. 419, 420). 



Fi^. 418. 



Fig. 419. 



Fig. 420. 



Loxsoma Cunninghamii. 



Fig. 418. A pinnule with marginal sori. Magn. Sdiams. 



Fig. 419. A sorus opened. Magn. 25 diams. 



Fig. 420. Columella with sporanges, Magn. 50 diams. 



LUNGS. — The internal respiratory sacs 

 of animals. 



Under this head we shall notice also the 

 larynx, trachea, and bronchi. 



Larynx. — The cartilages of the larynx do 

 not all possess the same minute structure. 

 The thyroid, cricoid, and arytenoid cartilages 

 consist of true cartilage, the basis being 

 homogeneous, and containing disseminated 

 cartilage corpuscles. The walls of the cor- 

 puscles are usually thick. The basis often 

 becomes fibrous, and both corpuscles and 

 basis encrusted with calcareous salts, or 

 completely ossified. Their perichondrium is 

 firm, and is composed of areolar tissue, with 

 fine elastic fibres, vessels, and nerves. 



The epiglottis (PI. 40. fig. 40), and the 

 appendices of the arytenoid consist of fibro- 

 cartilage ; and the corpuscles are frequently 

 more or less filled up by secondary deposit. 



The mucous membrane, as also the sub- 

 mucous tissue of the larynx, consists of 

 areolar tissue with networks of fine elastic 

 fibres ; at the surface it becomes more ho- 



2d 



