156 ON THE LICHENS OT THE i CHALLENGES ' EXPEDITION. 



consideration the possibility that others had seen fully developed 

 spores although he had not. 



Stereocaulon cymosum, Cromb. 5 =& (Ceratocaulon) arborescens, 

 Strn. MS. p. 6. — This lichen was deposited in Kew and a descrip- 

 tion of it recorded long before Mr. Crombie could have received 

 his specimen. 



Neuropogon tracfiycarpus, Strn. MS. p. 7, is a good species/ 



- 



Lecanora cyphelliformis, Cromb., = Z. cypellioides Strn., see 

 MS. p. 13. 



The only excuse Mr. Crombie has given for rejecting cypellioides 

 is contained, as usual, in two words written in pencil on the MS., 

 viz. " nomen informe "; and yet the composition is obvious enough, 

 like a little cypellum. 



As a professed classical critic, Mr. Crombie is singularly un- 

 fortunate in the present amendment. In the school to which he 

 belongs, such an engrafting of a Latin affix on a purely Greek 

 stock is regarded as a solecism. 



There is one exception, however, which I think should be 

 allowed, viz. the use of the Latin prefix " sub " to both Latin and 

 Greek words or derivatives from either. This prefix is so handy, 

 and has scarcely so neat an equivalent in Greek. Accordingly, 1 

 object to Nylander substituting latypodes for sublatypea, Leight. ; 

 besides, Dr. Nylander employs " sub " in nearly similar circum- 

 stances, viz. sabchlorotica, sublectdeina, &c. 



Lecidea disjungenda, Cromb., = Z., subjiciens, Strn. MS. p. 14. 

 I have not seen Mr. Crombie' s description of L. disjungenda ; but 

 his remarks under No. 11, Kerguelen, leave little room for doubt. 



Lecidea superjecta, Nyl.,=Z. ephizousa, Strn. MS. p. 15. 



Lecidea terebrafula, Strn. MS. p. 16, is considered by Mr. 

 Crombie as identical with L. ephizousa. I can scarcely agree 

 with him, as the differences, although minute, are characteristic. 

 This lichen puzzled me at the time of investigation. 



Stereocaulon subccespitosum, Strn. MS. p. 22, can scarcely be S. 

 tnixtum, Nyl., as the gonimia in the cephalodia are sirosiphoid, and 

 not scytonemoid. It is rather strange, however, that scytonemoid 

 threads have been detected on the surface of these cephalodia. 



Lecidea canescens^ Strn., was a slip for L. candidescens. Dr- 

 Nylander has named the lichen L. acunliana. 



Permit me, in the last place, through this medium to remind 

 Dr. Nylander that Lecanora vitellinetta, Nyl., described at p. 184 

 of the Linn. Journ. for 1876, ought to be changed, as the same 



