Holzinger : ON the genus (JOSCINODON. 759 



Since completing the above paper a note should be ad- 

 ded. Coscinodon rani, it should be stated, has been col- 

 lected by me near Winona, but on the Wisconsin side of the 

 Mississippi. My material is dated July 16, 1895. But all the 

 material from the first station, the Catholic cemetery bluff, 

 which is now in my hands, is unmixed Coscinodon wrightii 

 var. brevis. 



Through the kindness of Professor C. R. Barnes I was permit- 

 ted to re-examine a part of his material from near Winona, sent 

 him by me; all of it proved to be Coscinodon wrighiii var. brevis. 

 But Mrs. E. G. Britton's material from the same station, a part 

 of which she also kindly sent me since writing the above, un- 

 doubtedly contains the two. It is therefore very probable 

 that Professor Barnes' specimen was also mixed, and that, in 

 his certainly very careful examination and comparison with 

 the Cambridge type, he happened to have in hand some Cos- 

 cinodon rani from the Minnesota material. Finally, a re-ex- 

 amination of all of Prof. Barnes' material disclosed some plants 

 of G. raid growing together with C. wriglrtii var. brevis. 



EXPLANATION OF PLATE. 

 Plate XLI. 



Enlarged plant of G. read, calyptra and peristome. X4. 



Enlarged plant of (J. wrightii. X4. 



Enlarged plant of G. wrightii var. brevis, showing position of fe- 

 male bud and male bud. X4. 



Leaf of G. raid from upper portion of stem, front view. X42. 



Same, side view. X42. 



Leaf of C. raui from lower portion of stem, front view. X42. 



Same, side view. X42. 



Leaf of C, wrightii from upper portion of stem, front view. X42. 



Same, side view. X42. 



Leaf of G. wrightii from lower portion of stem, front view. X42 



Same, side view. X42. 



Cross section of leaf of G. raui. X120. 



Same, C. wrightii. X120. 



Leaf of C. wrightii, showing areolation. XI 12. 



Same, C. read. X112. 



Female flower of C. wrightii var. brevis, with two perichaetial 

 leaves. X42. 

 Fig. 17. Male flower of same, with three perichaetial leaves. X42. 



