86 MR. F. F. LAIDLAW ON THE ^ [Feb. 4, 



the interalai- space black ; under surface and legs sooty black 

 with long hairs. "Wings hyaline. Legs brownish black, with 

 very loilg hairs. 



Abdomen (first 7 segments only) dull brownish black. 



There can be, I think, no doubt that this species has as its 

 nearest known ally Archineihra. I believe, however, the differences 

 between them are of generic rank, the chief of these being the 

 much smaller number of accessory nervures running to the hinder 

 margin of the wings, the mode of origin of the pi'incipal and sub- 

 nodal sectors, and the character of the nerve running to the lower 

 basal cell. 



The only specimen taken has unfortunately been rather badly 

 knocked about and has lost the last segments of the abdomen. It 

 was caught in September in jungle at Kwala Aring. Its habits 

 were similar to those of Vestalis amcena, for which at first I mis- 

 took it. 



Foerster, in discussing the affinities of the genus Matronoides, 

 has proposed the following arrangement of the genera belonging 

 to the legion Calopteryx (Foerster, Ann. Soc. Ent. Belg. p. 66, 

 1899):— 



fNo ptevo.tigma \ g^'^i'^"'^-''- 



^ ° 1 Phonn. 



{^Vestalis. 



Basilar space free •{ 



] fUmma. 



LPterostigma present ...-j J^^'f^; 



[^Psolodesmus. 



f 3Iatrona . 



TNo pterostigma Neurohasis. < Ilati-onoides. 



Basilar space with crossj {JS'eurobasis. 



iiervules. \ r -m i 



I A pterostigma present. \ . , . 



If this grouping be accepted, and it is very convenient, the last 

 division may now stand as follows : — 



f Short rliomboiclal i)terostignia...^e/io. 



Pterostigma present.^ Pterostigma at least three C Archineura. 

 y_ times as long as broad. X Climacohasis. 



Neurobasis chinensis (Linn.). 



]Sfeu7-ohasis chinensis, Kirby, Cat. Odonata, p. 102 ; Selys, 

 Odon. de Sumatra, Ann. Mus. Genova (2) vii. p. 189 ; Selys, Odon. 

 de Birmanie, loc. cit. (2) x. 1890-1, p. 487 ; Selys, Neurohasis 

 chinensis et ses races locales, Ann. Soc. Ent. Belg. 1896 ; Karsch, 

 Ent. Nachr. xvii. no. 16, p. 243. 



Five males, three females, from the Aring River in Kelantan. 



This species appears to travel further down the i-ivei's than any 

 other Calopterygine, at least so far as my observations went. It 

 is very widely s];)i-ead in Ti'opical Asia. 



