104 Mr. R. Spruce on the Musci and Hepatica of the Pyrenees. 



cular tissue more than any other parasite with which we are ac- 

 quainted, although differing from it in habitat, in having Uttle 

 caudal appendage, and in being without, as far as we could dis- 

 cover, any distinct cyst, excepting that of the ovum before alluded 

 to. This is the first instance within our knowledge of Entozoa 

 having been found in the lungs. The Filaria bronchialis in- 

 habits the bronchial glands, and is moreover about an inch in 

 length. 



We had an opportunity likewise of examining the ova of these 

 animals, and of observing them in several stages of development. 

 Some contained a simple oval granular mass (fig. 4) ; in others 

 this appeared to be contracting (fig. 5), and in various stages o^ 

 division and subdivision. In some there was a separation into 

 two parts (figs. 6 Sc 7) ; others presented a mulberry mass similar 

 to that found in the ova of other animals (figs. 8 & 9). Differ- 

 ent degrees of progressive formation were observed from this 

 subdivision up to the completion of the perfect animal coiled up 

 within its unruptured envelope (fig. 10). 



XII. — The Musci and Hepaticce of the Pyrenees. 

 By Richard Spruce. 



[Concluded from vol. iii. p. 503.] 



Subtribus 2. Jungermannide^, N. ab E. 



5. Plagiochila, Nees et Mont. 



8. P. asplenioideSf L. ; Hook. Br. Jung. t. 13 (sub Jung.) ; 

 Syn. Hep. p. 49. 



Hab. Zo_3 in umbrosis per montes totos. In Pyrenseis tres 

 prseprimis formas innotavi : sunt — 



1. minor; H. P. 6 : caule gracili, squamis minutissimis (ne 

 amphigastriis dicam) in ventre adsperso vel nudo ; foliis subse- 

 cundis, margine dorsali valde reflexis et ex eo ad P. porelloidem 

 appropinquans. — Hab. in sylvis Pyren. centralium. 



2. major; H. P. 7 : foliis maximis, confertis, patulis ; squamis 

 caulinis obviis, plerumque amorphis, nonnullis bifidis, nonnuUis 

 lineari-digitatis. — Hab. in valle du Lys. 



3. heterophylla, N. ab E. ? Syn. Hep. p. 50; H. P. 8 : caule 

 tlagellifero, squamis minutis subulatis prsedito; foliis repandis, 

 retusis emarginatisve. — Hab. Val de Jeret et Bois de Gouerdei'c, 

 in rupibus umbrosissimis. 



9. P. Pyrenaica, Spruce in Hep. Pyren. n. 9 : caule horizon- 

 tali in planum ramoso ; foliis imbricatis, plano-distichis aut ad- 

 scendcntibus, subconvexis, ovato-subquadratis, apice variis, ob- 



