472 Miscellaneous. 



either side of it, is not minute. All the above-mentioned genera agree 

 with each other in the presence of a fourth joint to the longest digit 

 of the wing, and in fact must be said to bear considerable resemblance 

 to each other in most particulars, saving in the degree of development 

 of the tail and the existence or absence of a hastate nose-leaf. How- 

 ever, it may be said that those species which have not a nose-leaf re- 

 sembling that of the ordinary Phyllostomidoe have nevertheless some 

 cutaneous development about the face, nose, or mouth, and cannot 

 be properly called simple-nosed species. 



There is another very singular genus, of which I have before spoken 

 in communications to the Society, and which I have regarded as 

 allied to Molossus, but I have mentioned that it possesses four pha- 

 langes in the longest finger. I allude to the genus Mystacina, which 

 has hitherto been found only in New Zealand. "When preparing my 

 paper on the Bats of that country, I had not examined either Mor- 

 mops or Chilonycteris, but, on afterwards working out some West 

 Indian Bats, was at once struck with certain resemblances between 

 the latter and Mystacina. Without at present alluding to the de- 

 tails of structure which have induced me to arrive at this conclusion, 

 I take this opportunity of stating that I now regard Mystacina as 

 an aberrant form of Phyllostomid(B, coming after the several genera 

 which have been compared above, but differing more from them 

 than they do from each other. 



MISCELLANEOUS. 



On the Pith-Cells of JuncacecB. 

 By George Gulliver, F.R.S. 



[Plate VII. figs. 13, 14.] 



There are at least two kinds of pith-cells in Rushes. The pith 

 may be either an actinenchyma or an ovenchyma ; and these two 

 forms are alone sufficient to distinguish some species, if not sections, 

 of the order from others. 



The pith- cells are branched, like the spokes of a wheel, in Jnncus 

 effusus, J. conglomeratus, and /. glaucus ; while in J. acutifiorus, 

 J. squarrosus, and /, bufonius the pith-cells are more or less 

 rounded, commonly oval, and without any approach to the stellate 

 form. 



These observations are from my notes of 1860, which I hoped to 

 have extended to more species ; but, as an opportunity of doing so 

 has not occurred, I have lately verified the observations anew on the 

 plants above-named, and now give a sketch of the outlines of the cells, 

 in the hope of directing attention to the difference in question, which 

 is so remarkable, regular, and constant, that it may afford a good 

 and easily recognized character. 



Plate VII. fig. 13. Pitli-cells of Juncus effusus. 

 „ „ fig. 14. Pith-cells of J. ^M/bwiMS. 



Edenbridge, Oct. 19, 18G3. 



