338 Campbell’—Studies on some East Indian Hepaticae. 
Fig. 20. Surface view of a stoma. 
Fig. 21. Section of young carpocephalum. x 380. ar., young archegonium. 
Fig. 22. Section of an older carpocephalum. x 58. 
Fig* 2 3 Nearly ripe carpocephalum, showing a sporophyte, sp., enclosed in the calyptra, 
cal. ar., unfertilized archegonia. x 50. 
Fig. 24. An unfertilized archegonium. x 140. 
Fig. 25. Nearly mature sporophyte. x 58. d, thickened apical portion of the wall. 
Fig. 26. Apical region of a nearly ripe sporogonium. x 95* 
Fig. 27. A ripe spore and part of an elater. x 640. 
Fig. 28. Stoma from the carpocephalum. x 95. 
Fig. 29. A cell from the carpocephalum, showing normal chromatophores. x 690. 
Fig. 30. Cell from the carpocephalum, showing much enlarged chromatophores. x 640. 
