igij-] P- VAN DER GooT : Notes on Indian Aphides. 177 



Localities. — Birch Hill (Darjiling district), 6,000 — 7,000 feet, 

 i-vii-1914 {Carmichael coll.); Soom to Birch Hill (Darjiling distr.), 

 5,000—6,000 feet, 2-vii-i9i4 {Carmichael coll.) ; Soom to Darjiling 

 (East Himalayas), 4,500 — 7,000 feet, i4-vi-i9i4 (F. H. Gravely). 



Types in the collection of the Indian Museum, Calcutta; 

 Nos. 5595/H. I., 5598/H. I., 5602/H. I. 



I have little hesitation in considering the winged forms des- 

 cribed above, apparently caught on the wing, to be identical with 

 the wingless specimen I described in an earlier paper on Indian 

 Aphides [Rec. Ind. Mus., vol. XII, 1916, pp. i — 5). 



The reticulation of the cornicles is very rare in Rhopalosiphum , 

 the only species showing this character being Rh. aconiti, v. d. G. 



Rhopalosiphum vagans, sp. nov. 



Alate viviparous female. 

 Measurements. 



Length of body . . . . 2-60 mm. 



Breadth of body . . . . I'oS 



Length of antennae 

 Length of siphunculi 

 Expanse of wings 

 Length of cauda 



3-15 



054 

 7-90 



0-25 



Colour. — Head and thorax black, abdomen brownish. Eyes 

 dark. Antennae black. Legs yellowish; tarsus, tip of tibia and 

 femur (except the base) blackish. Siphunculi dark brown. Cauda 

 darkish. Pterostigma of forewings brownish. (Notes from speci- 

 men in alcohol). 



Morphological characters. — Body nearly naked, without any 

 lateral tubercles. 



Antennae distinctly longer than the body ; relative lengths of 

 the five last antennal joints about as: 34. 28. 21. 9. 35. The third 

 antennal joint bears from 21-31 circular sensoriae on nearly its 

 whole length. Frontal tubercles fairly small, protruding on the 

 inner side, with a few short hairs. 



Rostrum reaching to the second pair of coxae. 



Siphunculi moderately long and thin, distinctly swollen, with 

 the surface quite smooth. Cauda ensiform, about half as long as 

 the cornicles. 



Wings with normal venation ; the second fork of media i 

 moderately large. Hooking-hairs 3 in number. 



Legs long and thin, with a few short spines. (Described from 

 a single winged female). 



Food-plant unknown. 



Locality .Soom to Darjiling, 4,500-7,000 feet, i6-vi-i9i4 

 (F. H. Gravely). 



Type in the collection of the Indian Museum, Calcutta ; 

 No. 5600/H. I. 



