LORICA. 



[ 477 ] 



LUNGS. 



orifices scattered ; ova elliptical, with a 

 riiiii', but no spiues. 



BiBL. Allman, Fresh. Poli/zoa (Hai/ Soc), 

 83 ; Johnston, £rit. Zooph. 391. 



LORI'OA. See Carapace. 



LOUSE. SeePEDicuLUSandANOPLtTRA. 



LOVEXEL'LA, Hincks.— A genus of 

 Campanuliiriidaj (Ilydroid Zoophytes). 



Char. Stems simple or slig-htly branching, 

 rooted by a throad-like stolon ; capsules 

 turbinate, elongate, operculum of distinct 

 segments ; proboscis large and prominent. 

 L. dausa, iu dredgiugs, Torbay. 



BiBL. Hincks, ]3rit. Hyd. Zooph. 117 . 



LOXOCEPH'ALUS, Eberh.— A genus 

 of holotriehous Infusoria. 



Char. Free, ovate-oblong, constricted 

 towards the front, with one or more short 

 setfe at the constriction, and one or more 

 caudal setje. 



Two species. Freshwater, with decaying 

 vegetation. (Kent, Inf. 488.) 



LOXOCON'CHA, "Sars.— A marine Os- 

 tracode, allied to Cythere, with long setife- 

 rous antennte, and strong subrhomboidal 

 valves, which have toothed hinges and often 

 a pitted surfixce. Common in the British 

 and other seas, and fossil iu the Tertiary 

 and post-Tertiary strata. 



BiBL. Bradv, Linn. Tr. xxvi. 432. 



LOXO'DES, Ehr.— A genus of hypo- 

 trichous Infusoria, family Trachelina. 



Char. Body curved, with a longitudinal 

 row of transparent vesicles, each of which 

 contains a highly refracting body, and with 

 a more or less arborescent distribution of 

 the digestive canal. 



L. rostrum, Ehr., Pekcida rostrum, Duj. 

 (PI. 31. fig. 39); freshwater. 



L. bursar ia (PI. 31. fig. 41) is a Parame- 

 cium. L. cuculluhis and L. dentatus belong 

 to Chilodon. 



BiBL. Ehr. Inf. 323; Duj. Inf. 449; 

 Stein, Inf. ; Clap'arede et Lach. Inf. 339. 



LOXOPIIYL'LUM, Duj.— A "genus of 

 holotriehous Infusoria, fam. Trachelina. 



Char. Body flat and leaf-like; contractile 

 vesicle posterior, near the anus ; anterior 

 part of the bodv sometimes produced. 5 

 species. i./as«o/a (PL 30. fig. 10). They 

 belong to the genera Amphileptus and Tra- 

 chelius, Ehr. 



BiBL. Duj . Infii.^. 487 ; Claparede et 

 Lachmann, jyifus.' 360 ; Kent, Inf. 527. 



LOXOSO'-AiA, Keferst. — A genus of 

 Polyzoa, fam. Pedicellinidse. Like Pedi- 

 ce/lim, but united in colonies. 3 species, 

 on marine annelida. (Hincks, Polyz. 572.) 



LOXSO'MA, Brown.— A genus of Hy- 

 menophylleiB (Polypodiaceous P'erns), dis- 

 tinguished by the projecting colunm bearing 

 the sporangia (tigs. 414^ 415, 410j. 



Fig. 414. 



Fig. 415. 



Fig. 416. 



Loxsoma Cunuinghamii. 

 Pig. 414. A pinnule with marginal sori. Magn.5 diams. 

 Fig. 415. A sorus opened. Magn. 2.5 diams. 

 Fig. 416. Columella with sporanges. Magn. 50 diams. 



New Zealand (Hooker, Si/n. 56). 



LUCERNARIA, Fabricius.— A genus of 

 Medusje. i. auricula is common in the 

 summer in the seas of England and Norway. 

 It can be kept for some time in an aqua- 

 rium, and from the small size of many indi- 

 viduals, is a very interesting object for the 

 microscope. 



BiBL. M. -Edwards & Hainie, Coraill. iii. 

 457; Agassiz, Sea-side Stud., 1871, 46; 

 Keferstein, Zeit. f. iviss. Zool. xii. 



LUMBRI'CUS.— A genus of setigerous 

 Aunulata. L. ten^estris, the earthworm. 

 Ray Lankester, Qu. Mic. Jn. 1864 & 1865 ; 

 Lockhart Clarke, Proc. Roy. Soc. 1857, 344 

 (nervous system) ; Rolleston, Forms of An. 

 Life. 



LUNGS. — The internal respiratory sacs 

 of animals. 



Under tliis head we shall notice also the 

 larynx, trachea, and bronchi. 



Larynx. — The cartilages of the larynx do 



