39 2 Records of the Indian Museum. [Vol. XXIV. 



Of the species referred to the genus in Kirby's catalogue, the 

 African A. -praetor ius Selys, has been since referred to an allied 

 genus Podogomphus b} r its author. 



I have ventured to remove A. bivittatus Selys, to a separate 

 genus. The two species from N.-E. Asia, A. maacki Selys, and 

 .4. M-ftavum Selys, are unknown to me save from the descrip- 

 tion. Both appear to belong to the genus. 



L/astly A. nietneri Setys is referred b}' me to the new genus 

 Heliogompkus. 



Anisogomphus occipitalis (Selys). 



2<5 (f , 2$ 9 (in poor condition). Gopaldhara, Darjiling- district. H. 



Stevens. 

 id 1 . Darjiling, 1-3000 ft.. May, 1912. Lofd Carmichael's collection 



(cc/1167). 

 id, 1$. Turzum Tea Estate, Darjiling, Mar. iy_>o. O. Lindgren. 

 id", Darjiling Dists. (1409/H2). id, i9- Darjiling Dists. 

 (3424/111). 



Closely allied to the following species, from which it is readily 

 distinguished by the following characters : — 



(i) All the specimens of A. occipitalis before me have two 

 cross-nerves in the cubital space of the fore-wing. 



(ii) The upper end of the dorsal stripe of the synthorax is 

 not confluent with the upper end of the antehumeral stripe. 



(iii) The black bands on the lateral sutures of the synthorax 

 are much broader than in A. orites. 



(iv) The anal appendages of male A. occipitalis also show 

 marked differences. The ventral 

 process of the upper pair is 

 straight and dagger like, and this 

 process, owing to the fact that the 

 appendages are more closely ap- 

 proximated thau is the case in 

 orites, is invisible from above. 

 Further the branches of the lower 

 appendage are straighter and 

 rather more slender, with a more Pig. 12. — Colour pattern 01 syntho- 



poillted apex. !?* of Anisogomphus occipitalis 



1 T x • r ^1 • beh's, o, adult. 



In young specimens of this 

 species the antehumeral band of the synthorax is complete, in older 



specimens it is in part obliterated, 

 and comes to consist of a dorsal spot, 

 rather widely separated from a more 

 anteriorly placed linear remnant, 

 length of abdomen of & 32 mm. 

 Kio . i2a.-Occiput ; Anisogom- of hinder-wing 30 mm.: length of 

 pkits occipitalis belys, 9, , , r -\ . , . 



outline. abdomen of 9 33 mm., of hinder-wing 



32 mm. 



