1 2 Campbell, — Studies in some East Indian Hepaticae. 
Jungermanniales. Whether they are most nearly related to the anacro- 
gynous Jungermanniales, or have been derived from forms more like 
the Sphaerocarpales, is a question. The character of the sporophyte, with 
its single layer of wall-cells, would suggest the latter hypothesis. 
The establishment of a special family, Calobryaceae, is entirely justified, 
and perhaps an order, Calobryales, should be established, co-ordinate with 
the Sphaerocarpales, Marchantiales, and Jungermanniales. 
The distribution of the species of Calobryum indicates that the genus 
was once more generally distributed than at the present time. 
EXPLANATION OF PLATE I. 
Illustrating Prof. Campbell’s paper on Studies in some East Indian Hepaticae. 
Fig. i. Female plant of Calobryum , showing a young leafy shoot, k, arising from the rhizome. 
X 2. 
Fig. 2. A leafy shoot showing marked dorsiventral habit, x 2. 
Fig. 3. A male plant, x 2. 
Fig. 4. A shoot with mature sporophyte, s_p. Natural size. 
Fig. 5. An open capsule, x 2. 
Fig. 6. A branch upon which two sporophytes have developed ; the upper part, with the 
capsule, has been broken off. 
Fig. 7. Part of an elater. x 880. 
Fig. 8. Two spores, x 880. a, in optical section ; b, surface view. 
Fig. 9. Apex of a male plant, with group of antheridia. x 100. 
Figs. 10-17. Young antheridia seen in median longitudinal section, x 640. 
Fig. 18. Mitosis in young spermatogenic cells, showing eight chromosomes. 
Fig. 19. Development of the spermatozoid. b, blepharoplast. 
Fig. 20. Median section of the apex of a branch in which the apical cell has given rise to an 
archegonium, a ; the cell x is the base of the apical cell ; b, median section of the archegonium. 
Figs. 21-23. Young archegonia seen in median longitudinal section, x 640. 
Fig. 24. Cross-section of young archegonium. 
Fig. 25. Three longitudinal sections of a young archegonium. x 640. b is the median 
section. 
