ELEPHANTOMYIA. 10T 



The antennae, if bent backwards, would hardly reach the root 

 of the wings ; the first joint is comparatively shorter than usual ; 

 the second is rounded ; the basal joint of the flagellum is 

 elongated and stout, being apparently formed by the coalescence 

 of two joints ; the following joints are subcylindrical, more 

 elongated towards the tip of the antennae and beset with rather 

 long verticils. Collare well developed ; its neck short ; thoracic 

 suture well marked. The feet are long and slender, finely pubes- 

 cent ; the ungues are somewhat broad at the basis ; the usual 

 excision on the under side between the two last tarsal joints is 

 apparent in the male. Wings moderately long and broad (Tab. 

 I, fig. 5) ; tip of the auxiliary vein nearly opposite the inner end 

 of the submarginal cell ; the second longitudinal vein originates 

 a little beyond the middle of the length of the wing ; the praefnrca 

 is arcuated, short, not more in length than about one-third of the 

 remaining portion of the second vein ; the latter is nearly parallel 

 to the third vein, and both are arcuated ; thus the submarginal 

 cell is of nearly equal breadth ; the first posterior is only a little 

 shorter than the submarginal; the discal cell is nearly square; 

 the great cross-vein is usually opposite its middle ; the fifth, sixth, 

 and seventh veins are nearly straight ; the stigma is oval, dis- 

 tinctly marked, and there is no trace of a marginal cross-vein. 



The ovipositor of the female has rather long, narrow valves ; 

 the upper ones are very slightly arcuated. 



This genus (the name from £ai$a$, elephant, and fivia, fly) was 

 introduced by me in the Proc. Acad. Nat. Sci. Philad. 1859, p. 

 220, and based upon a species which, at that time, I believed to 

 be one described by Mr. Westwood, but which proved afterwards 

 to be new. This is the only living species of the genus at present 

 known ; but the three species included in amber and mentioned by 

 Mr. Loew as Toxorrhinae (Linn. Entom. Yol. Y), apparently 

 belong to this genus. 



Observation. — The statements of Mr. Loew (1. c. p. 394) about the " perfect 

 agreement in the generic characters" (vollstaendige Uebereinstimmung in 

 den generischen Merkmalen) between these fossil species and Toxorrhina 

 fragilis from Porto Rico rests upon an oversight of the important differ- 

 ence between them : the absence of the submarginal cell in the latter. I 

 have been able to ascertain this from the drawings of the fossil Elephan- 

 tomyice, which Mr. Loew kindly showed me ; but I have not seen the 

 specimens themselves. The drawings of which I had a glimpse, showed 

 a wing like Elephantomyia, that is, with a submarginal cell. Further in- 



