EXPLANATION OF THE PLATES. 339 



[6, EiinnolJia solitaria 0. S. ; forceps from above, half closed ; aa 

 are coriaceous, movable ; bb. hooked appendages, consisting of two, 

 closely applied lamels ; the outer one horny ; the inner one appa- 

 rently coriaceous ; e. the anal style ; cc. projecting internal organs ; 

 bb. soft eminences (perhaps rudiments of the large soft lobes of 

 Dicranomyia) . 



¥. Eiiunobia ihdigena 0. S. ; forceps from above ; the lamels bb are 

 double. 



§. Elepnantomyia westwoodi 0. S. ; one-half of the forceps ; aa. 

 horny appendages. 



9. Teucliolal>is complexa 0. S. ; forceps from above ; 9a. one-half 

 of the same, from below ; aa, bb. horuy appendages. 



10. Antocha saxicola 0. S. ; forceps from above ; aa. double append- 



ages, consisting of a horny and of a soft part, closely joined. 



11. Dicranoptyclia nigripes 0. S. ; forceps from above ; y. short, 



black bristles ; xx. indistinct horny appendages. When this species 

 opened its forceps, a delicate, horny apparatus (figured separately, 

 fig. 11a) was spread outside of it ; bb is a slender forceps, moving 

 independently of aa, and closing at the point c. 



12. Dicranoptyclia sobrina 0. S. ; one-half of the forceps. 



13. Crypt olabis paradoxa 0. S. ; forceps from above. 



13a. the same from below; aa. horny appendages, small and indis- 

 tinct, being closely applied to the fleshy part of the forceps ; 

 b seems to be the rudiment of an anal style. 



13&. the tip of the abdomen of the female, from the side. 



13c. the same from above ; both show that there are no visible horny 

 lamels ; the prominences aa are beset with microscopic bristles. 



PLATE IV. 



14. Erioptera armata 0. S. ; forceps from above. 



14a. the same, from the side ; its structure is somewhat complicated ; 

 besides the coriaceous parts, del, there are two pairs of horny 

 appendages ; one of them is seen at k, in fig. 14a ; when de- 

 tached, it looks like fig. 146, in which the portion bbb is closely 

 applied to the coriaceous part d and c branches off. The other 

 pair of appendages, ee, of fig. 14a, is slender and curved. 



15. Erioptera caloptera Say ; forceps from below. 



16. Erioptera vertjsta 0. S. ; forceps from above. 



16a. the same, from below; the horny appendages, aa, seen from 

 below, appear double, consisting of the horny part, bb, and the 

 membranaceous appendage, cc; fig. 166 represents it detached ; 

 its margin d is horny, the rest is membranaceous ; these two 

 appendages have an interval between them, although they 

 move simultaneously. 



