8 Transactions. — Zoology. 



Postscript (December). — I have throughout spoken of 

 this parasite of Cicada larva as G. sinclairii, though I am by 

 no means certain that this identification is correct. Berkeley 

 states that his specimen is " yellowish," inclining to " lemon- 

 coloured " at the edges. Now, neither the dried specimens 

 nor carefully preserved ones are yellow : if the terms 

 "brownish" or "pinkish" be used, either is true. More- 

 over, while Berkeley's figure is very similar to Mr. Hamil- 

 ton's specimen, it differs from my own specimens from 

 Farewell Point. However, the latter difference is not one 

 that has any importance ; and, with regard to the colour, it 

 may be that when fully mature, when all the spores that can 

 be formed are formed, the fungus turns yellow. For the 

 present it is less confusing to retain Berkeley's name for the 

 fungal destroyer of our Cicada larva, especially as only one 

 other case of a similar insect being attacked by Cordyceps is 

 known — viz., C. cicadcB, Miquel, from Brazil — and it is im- 

 probable that there is any connection between the two 

 species. I have been unable to find an account of the 

 Brazilian species, which appears to be very imperfectly de- 

 scribed. 



EXPLANATION OF PLATE I. 



[The figures are mere outlines, tracings from more elaborate sketches 

 carefully drawn to scale. The magnification of the figures is about twice 

 the natural size.] 



Fig. 1. Side view of Cicada larva, with a young fructification of Cordyceps 

 sinclairii issuing from its neck, and a small one from the base of the 

 right fore leg (the other legs are represented as being cut short). The 

 greater part of the main aerial bundle is white, but the tips are 

 pink. 



Fig. 2. Dorgal view of fore part of same larva, showing the three main 

 branches of the aerial bundle and a small vertical branch. 



Fig. 3. A Cicada larva with a very well developed Cordyceps. The single 

 main axis branches almost at once into a number of more or less 

 bifurcated lobes, flattened, and brown-pink in colour ; the bases 

 only are now white, though here and there white patches persist. 



Bundles of white hyphso of the fungus are seen issuing from all the 

 thinner parts of the body-wall, between the abdominal and thoracic 

 segment.", and from various parts of the fore leg and second leg (which is 

 bent up against the body) ; the third leg is removed. 



