152 DR. J. STIRTOX OX THE LICHENS 



The same figures and numbers are here employed as those given in Senh. Netto's 

 Plate, but here somewhat differently interpreted, by analogy with the structure 

 seen in the female flower. 



Plate X. 



Fig. 1. A female raceme of Marupa Paracusis bearing a ripe fruit : natural 



size. 



2. The calyx, the ten gland-like scales from which the filaments have fallen 



and which surround the gynophore, upon the summit of which are 

 seen the cicatrix of the fallen fruit and the four sterile ovaries. 



3. The same parts, seen from above : both magnified. 



4. A longitudinal section of the pericarp of the fruit, with the enclosed 



putamen removed to show the physiform pergamineous epicarp, the 

 inner membranaceous endocarp, and the copious intermediate mu- 

 cous niesocarp. 



5. The same section with the putamen restored, showing it to be suspended 



from a point beneath the persistent style. 



6. The fruit seen on its ventral edge, showing the chord of nourishing 



vessels passing through the basal attachment, and thence ascending 

 to the hilar point of suspension of the putamen. 



7. The putamen, seen on its face. 



8. The same, viewed on its ventral margin, showing the longitudinal chord 



of nourishing vessels. 

 9- A longitudinal section of the putamen, with the enclosed exalbuminous 

 embryo within its membranaceous inner integunient. 



10. A transverse section of the osseous putamen. 



11. A side view of the embryo deprived of its integument, showing the 



minute superior deflexed radicle turning away from the ventral edge. 



12. The same, enveloped in its integument, showing the point of its suspen- 



sion, the short raphe ending in the laterally ventral chalaza. 



13. An edge view of the plano-convex accumbent cotyledons. All natural size. 



Remarks on Mr. Crombie's Paper on the ' Challenger ' Lichens 



in Journ. Linn. Soc. vol. xvi. By James StiAton, M.D., 



F.L.S. 



[Eead December 6, 1877.] 



AVith reference to Mr. Crombie's paper on the ' Challenger ' 

 lichens, commencing at page 211 of Linn. Journ. for 1877, perhaps 



some remarks on certain items in it. 



elsewhere) 



In the present instance I am taken somewhat at a disadvan- 



