On the Use of the Generic Name Brncliyccrcns. 515 



])rn1)al)ly found in tlio Ratnapura district. No. 2 [i.e., P. v. 

 j)}i\U\psi and ])rol)al)ly /*. v. 7icsfor] is found only to tlio 

 north of tlio Kala Ganga, inhabiting the Panadura and 

 liorana districts, and ranging,- up the west coast to a little 

 way north of Coh)m1)o, and inland up the Kelani Valley, 

 probably to about the foot of the Adam's Peak llange. 

 Both of them have a very restricted range, with the J\ala 

 Ganga as their mutual boundary, but 1 am not as yet able 

 to say exactly how far inland each form extends. It cannot, 

 liowever, be far, as both forms are confined to the wet zone ^^ 

 [that is, the area in which the rainfall exceeds 75" per 

 annum]. 



" There can be no question of seasonal change, as the 

 two series of skins have been collected at the same time o£ 

 the year [December] .... and no question of age .... 

 As far as I am aware, the two forms are never found 

 together." 



I have thought it better to add these extracts from 

 Mr. Phillips^s letters in a postscript rather than to remodel 

 a paper which has already been sulHciently difficult to write. 

 It will be seen that Mr. Phillips deserves the fullest possible 

 credit for an interesting discovery, and that the results 

 arrived at in this paper have been rendered possible by his 

 enterprise alone. His description, in the earlier letter, of 

 the form occurring north of the Kala Ganga seems to me to 

 apply better to P. v. iiesto?' than to tlie specimens upon which 

 I have based P. v. phillipsi. This, I think, tends to confirm 

 the suggestion made above that the habitat of F. v. nestor 

 is in the northern half of the wet zone proper (rainfall 

 exceeding 100") ; while phillipsi inhabits the rather drier 

 coastal belt (rainfall 75" to 100") to the south of Colombo. 



Lll. — On the Use of the Generic Name Brachycercus in 

 Plectoptera and Orthoptera. By Herbert Campion. 



Two recently-published generic names owe their origin to 

 forgetfulness in the one case and long-continued neglect in 

 the other of a genus established as long ago as 18.'34. The 

 first of the two modern names to be considered is Enryccenis, 

 emjjloyed by Dr. S. Bengtsson for a new genus of ^layflies, 

 containing a single species removed by him from the genus 

 C(Mnis (Ent, Tidskr. xxxviii. p. 18(3; 1917). That species 



