104 Mr. R. Spruce on the Musci and Hepatice of the Pyrenees. 
cular tissue more than any other parasite with which we are ac- 
quainted, although differing from it in habitat, in having little 
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 of 
division and subdivision. In some there was a separation into 
two parts (figs. 6 & 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 Hepatice of the Pyrenees. 
By Ricuarp SPRvcE. 
| Concluded from vol. iii. p. 503.] 
Subtribus 2. JuNGERMANNIDEA, N. ab E. 
5. Plagiochila, Nees et Mont. 
8. P. asplenivides, L.; Hook. Br. Jung. t. 13 (sub Jung.) ; 
Syn. Hep. p. 49. 
Hab. Z)_3 in wmbrosis per montes totos. In Pyrenzis tres 
preprimis 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, pleramque amorphis, nonnullis bifidis, nonnullis 
lineari-digitatis.—Hab. in valle du Lys. 
3. heterophylla, N. ab E.? Syn. Hep. p. 50; H. P. 8: caule 
flagellifero, squamis minutis subulatis predito; foliis repandis, 
retusis emarginatisve-—Hab. Val de Jéret et Bois de Gouerdere, 
in rupibus umbrosissimis. 
9. P. Pyrenaica, Spruce in Hep. Pyren. n. 9: caule horizon- 
tali in planum ramoso ; foliis imbricatis, plano-distichis aut ad- 
scendentibus, subconvexis, ovato-subquadratis, apice vartis, ob- 
