THE STAG-HORNED FLIES. 



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The thorax is rusty brown, with four long black lines, two 

 parallel with the vertical line of the insect, and two slanting 

 diagonally towards the abdomen. The long legs are reddish 

 brown, and in the middle of the thighs of the fore-legs is a 

 patch of black bristles pointing forwards. The female is 

 coloured much like the male, except that the head and thorax 

 are yellowish brown, and that she wants the patch of bristles 

 on the fore-legs. The illustration is magnified in order to 

 show the shape of the insect, the length of which is about 

 half an inch. 



Another of the insects captured by Mr. Wallace is Elctplw- 

 myia cervicornis, which inhabits the island of Dorey. 



The head is blackish 

 brown above and ruddy 

 brown below. The oddly- 

 shaped horns take their 

 origin just below the eyes, 

 and are black tipped with 

 white. The thorax is yel- 

 lowish olive above and 

 whitish beneath. The ab- 

 domen is modified into a 

 sort of footstalk, which is 

 yellow brown, and the re- 

 mainder is dusky brown, 

 becoming darker at the 

 tip. The legs are long, 



and yellowish brown. The female has no horns, her head being 

 simply rounded. 



This is rather a larger insect than the last, the average length 

 of the male being about six-tenths of an inch. 



Fig. 51i3. — Elaphomyia cervicornis. 

 (Yellowish brown.) 



Our last example of the Stag-horned Flies is also a native 

 of Dorey. 



The head of the male is blackish brown, streaked with yellow 

 in front. The eyes are very protruding, and just below them is 

 a short, rounded, and rather flattened projection which takes 

 the place of the horn. The colour is brownish black, but across 

 the footstalk of the abdomen passes a bar of yellow T . The reader 



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