ON MOSSES OF THE GENUS CAMPYLOPUS 105 



pagina near apex are long, thin, and undulating, 30 to 45 by 3 to 5. 

 The lower cells next nerve are large, irregularly rhomboid, 35 to 50 

 by 10 to 14, and have numerous osculating mammillseform prom- 

 inences, which are occasionally seen connected by slender tubes, 

 lateral as well as apical, 1.5 to 2 in diameter. External to these 

 cells are long undulating cells, with numerous oil globules in single 

 series as in Dicramim scoparium, 50 to 80 by 5 to 8 : the marginal 

 cells are long and very narrow. The alar spaces are as a rule well 

 developed, composed of large hexagonal cells with thick walls, 

 colourless at first, then coloured red next the nerve, ultimately 

 coloured red throughout. On the ground, Benbecula, 1886. 



The main points of distinction are, the constitution of the nerve, 

 the presence of connecting pores, the peculiar character of the rest 

 of the areolation, and the absence of any projecting posterior cells 

 on the nerve. 



An examination of my specimens of the New Zealand C. 

 leptodus revealed a structure of the leaf similar to that of the 

 present moss, viz. large irregular cells near the central base, having 

 mammillseform prominences connected occasionally by slender tubes. 

 The rest of the areolation is, however, quite different, having cells 

 much shorter and thicker, and therefore of a different shape ; but 

 the apices have longish denticulate hyaline points. Projecting 

 posterior cells are also present in upper third of nerve. 



CAMPYLOPUS SUBCINEREUS, n. sp. Tufts densely casspitose, from 

 one to two inches in height, fuscescent below, greenish or glaucous 

 green near apex, sparingly rufo-radiculose ; leaves, dense, erecto- 

 patent, straight, narrowly lanceolate-subulate from a slightly ovate 

 base, denticulate at the apex ; nerve f breadth of leaf near the base, 

 not sukate on back, in section shows 3 strata of cells, the anterior 

 row consisting of large pellucid cells, 12 to 22 diameter, the middle 

 row of small, mostly opaque, but here and there pellucid, cells, 4 to 

 7 diameter, the posterior row of smaller opaque cells, 3 to 5 diameter ; 

 cells of pagina near central base oblongo-hexagonal, 25 to 40 by 8 

 to 10, marginal cells numerous, very narrow and elongate; auricles 

 either absent or only slightly developed. On the ground, Benbecula, 

 1886. 



This moss differs in several important particulars from C. pyn- 

 formis. The tufts are much denser, nerve broader, different in 

 constitution, smooth on back, with no projecting posterior cells. 

 In C. pyriformis the cells of the anterior row of the nerve are 

 pellucid and from 9 to 12 diameter, the cells of the middle row 

 only slightly smaller, 7 to 1 1 diameter, and areolation near base 

 much laxer. 



I cannot close this record without referring to another Campylopus 

 from the summit of Snowdon gathered in 1865 by the late Mr. G. 

 K. Hunt, who sent me specimens of it. In a note appended, he says: 



