i8o 



Records of the Indian Museum. 



[Vol. XIII, 



Legs fairly long, the tibia and femur with moderately long and 

 fine hairs. (Described from a single winged female). 



Food-plant unknown. 



Locality .—^oom to Darjiling, 4,500—7,000 feet, i6-vi-i9i4 

 (F. H. Gravely). 



Type in the collection of the Indian Museum, Calcutta; No. 

 6968/H. I. 



Although only a single damaged alate female was available, 

 this species is sufficiently distinct from other species of Trichosi- 

 phtim {Tr. minutum, v. d. G. and Tr. querci, v. d. G.) in the number 

 and distribution of sensoriae on the third antennal joint. 



Fig. 4. — Triclwsiphiim montanum, sp. nov. 

 Fore and hindwing of alate female. ( x 25). 



Lachnus himalaycnsis, sp. nov. 



Apterous viviparous female. 



Measurements. 



Length of body 

 Breadth of body 

 Length of antennae 

 Siphunculi (diam.) 



4*50 mm. 



2-35 ,, 

 r8o ,, 



0-14 ,, 



Colour. — Body dirty grayish, without blackish spots. Eyes 

 black. Antennae grayish-white. Legs brownish-black. Siphun- 

 culi gray, with a brownish top-rim. Cauda light brown. (Notes 

 from specimen in alcohol). 



Morphological characters. — Body broad ovate, slightly arched, 

 covered with numerous fine, moderately short hairs. 



Antennae less than half as long as the body, with numerous 

 fine hairs; relative lengths f the four last antennal joints about 

 as : 33. 13. 17. 12. Sensoriae are present as follows : III o. IV 2. 

 V i-hi. VI i(-|-4). The primary sensoriae are large, the secondar y 

 ones very small and circular. 



Rostrum short, reaching to the second pair of coxae. 



Siphunculi scarcely elevated above the body, nearly reduced 

 to pores. Cauda obsolete, the last abdominal segment broadly 



