'298 Records of the Indian Museum. [Vol. XV, 



B. Antennae l:2-jointed. (Antennae l:2-jointed ; long 

 hairs on last two joints only ; pronotum produced 

 over neck ; submarginal cell present ; posterior 

 cross vein at base of discal cell ; (jth vein very close 

 to 5th for basal third of its length) . . . ConUhorax, gen. nov. 



BB. Antennae 15-jointed. (Antennae 15-jointed ; verti- 

 cils on all joints equally long ; pronotum not pro- 

 duced over neck ; submarginal cell pr<sfnt ; pos- 

 terior cross vein at middle of discal cell ; Oth vein 

 woHying close to 5th] ...... Elephantomyia, Os. 



Sac. and Toxo- 

 rhina, Loew. 



LIMNOBIORHYNCHUS, Westw. 



Ann. S(,r. Enl. France IV, p. ()8:3, V only (1835). 



Ty2)e : L. weshvoodi, nam. nov. for L. brasiliensis, Westw. $ only. 

 Eecogiiition of this genus having been given, according to the argu- 

 ment adduced under Toxorhina, the following species will fall in it. 



westwoodi, nam. nov. {L. brasiliensis, Westw. $ only) from Brazil, 

 h'agilis, Lw. {Toxorhina id.) from Porto Rico, 

 magna, Os. Sac. from North America {Toxorhina id.). 

 muliebris, Os. Sac. from North America {Toxorhina id.). 

 incerta, Brun. {Toxorhina id.) from India. 

 Loew'.s figure of jra<jilis {Toxorhina id.)^ shews a conical production 

 of the thorax over the neck, though to a less extent than in Conithorax 

 latifrons. In Needham's figure of muliebris, Os. Sac. {Toxorhina id.) 

 the auxiliary and 1st longitudinal veins are shewn united though Osten 

 Sacken mentions the existence of both auxiliary vein and subcostal cross 

 vein. 



Limnobiorhynchus incertus, Brun. 



{Toxorhina incerta, Brun,). 



This is undoubtedly a Limnobiorhynchus although it does not possess 

 every character of the genus, as the pronotum is not at all produced 

 over the neck, and the posterior cross vein is at a little before the middle 

 of the discal cell instead of being at its base. Only the two last antennal 

 joints (not four, as stated in my description) bear very long verticils, 

 the remaining joints having them very short. The discal cell is present 

 in the right wing and open in the left ; the course of the single vein be- 

 tween the 1st vein and upper branch of the 4th may be unscientifically 

 described as composed of the praefurca and the 3rd vein, with the 2nd 

 vein absent. In this it is an exact replica of " Toxorhina " {=Li7nno- 

 biorhynchus) muliebris, Os. Sac. The auxiliary vein is present but almost 

 coalescent with the 1st, though it is quite obvious at both base and tip, 

 but it is impossible to decide whether the subcostal cross vein is present 

 or not. 



CONITHORAX, gen. nov. 



Allied to Limnobiorhynchus, Westw. in the very elongated proboscis, 

 about as long as the whole body, with palpi at tip ; in the 12-jointed 

 antennae with very long verticils on last two joints only, the other 

 joints bearing very short ones ; in the two or three basal joints of the 

 flagellum being more or less united in the form of a cone ; also in the 



^ Linn. Ent. V, pi. ii, 17, full insect; IG, antenna ; 18, wing ; 22, head. 



