657 



IfOTES AND EXHIBITS. 



Mr. Froggatt exhibited (1) specimens of the Sliade-midge(5i6io 

 imitator) with a note on its life-history. Mrs. Lister Lister 

 found parts of her garden at Mosmau swarming with elongate 

 Itrown maggots having each segment fringed with a coarse bristle- 

 like appendage. The larvae pupated in the damp soil, and the 

 flies emerged on the 25th September, 1910. (2) A collection of 

 ants containing the cotypes of a number of new species recently 

 described by Dr. Forel, from the Solomon Islands, and Teunant's 

 < 'reek, Central Australia, collected by Mr. Field, with observations 

 on some of the cosmopolitan species. 



Mr. D. G. Stead exhibited a series of specimens'* of the Estuary 

 Perch, Percalales co/oMoritm(Gunther), and the Freshwater Perch, 

 P. JluvuUilis Stead, to illustrate the distinctiveness of the two 

 species; and he conttibuted the following Note: — " At the July 

 Meeting of this Society, Mr. A. R. McCulloch read a Note upon 

 the identity of the Freshwater Perch, and stated that, from an 

 examination of a series, including intermediate forms, he believed 

 it to be, in reality, an extreme variation of P. colonorrcjn; and 

 that it appeared to be represented by Steindachner's figure of 

 Dules novemacideatus. With the latter part T need not deal 

 here, as it i.^ merely a question of synonymy, and has no bearing 

 U[)on the actual question of the specific identity of the two 

 Eastern Perches. Mr. McCulloch intends to convey to us, as 

 Ugilby did in 1893, upon an examination of the same material 

 (apparently with the exception of one specimen), that the two 

 forms distinguished by nie, and by my Department, as " Fresh- 

 water" Perch and "Estuary" Perch respectively, are specifically 

 the same. Now the conclusions come to by me in 1905, and 

 upon which the separation of the two species was founded, were 

 only arrived at after the examination of a great many specimens 



* Both kinds preserved in formalin. 



