CECIDOMYIA. 81 



Lives in the withered tips of the young shoots of Salijc Caprea 

 and S. alba. Noticed by Frisch (Beschr. i. 4. 38. xxi.). 



11. iteophila, Loew, Pr. Pos. Gym. 35. 26 (1850); Winn. Ni- 

 gro-fusca, antenn'm 14:-15-a}'ticulatis, alls cinerascentibus, pedibus fuscis 

 subtus paUidioribus. Long. |— |- lin. 



Costa of the wings squamose, stout, deep black ; veins dark brown ; 

 transverse veinlet pale, situate about the middle of the subcostal vein ; 

 cubital vein quite draicjld, ending at some little distance in front of the 

 tip of the wing ; second branch of the anal forming an obtuse angle, 

 slightly curved to the hind border. Mule. Antennce 14-15 -joi>ded, 

 nearly as long as the body ; joints as long as their petioles, rather 

 longer towards the base. Fern. Antennce fourteen-joiuted, half the 

 length of the body. Abdomen tawny beneath. Oviduct elongated, 

 without valves; two last segments whitish-yellow. 



Yery nearly allied to C. salicina ; joints of the antennas one 

 or two less in number. Lives in the rose-like galls of Salix (Ma. 



12. heterobia, Loew, Pr. Pos. Gym. 35. 25 (1850); Winn. 

 Nigro-fusca, alis cinerascentibus, pedibus fuscis subtus paUidioribus; 

 Mas, antennis n~19-articulatis ; Fcein. aniennis \&-a7'ticulatis. Long. 

 I lin. 



Costa of the wings squamose, stout, deep black ; veins dark brown ; 

 transverse veinlet pale, situate about the middle of the subcostal vein ; 

 cubital vein generally quite straight, in some cases slightly curved up- 

 ward near the tip, endiuLi" at some little distance in front of the tip of 

 the wing; second branch of the anal forming an obtuse angle, shghtly 

 curved to the hind border. Male. Antennce seventeen- to nineteen-joint- 

 ed, nearly as long as the body ; joints as long as their petioles, rather 

 longer towards the base. Fern. Antennce sixteen-jointed, half the length 

 of the body. Abdomen tawny beneath. Oviduct elongated, without 

 valves ; two last segments whitish-yellow. 



Lives in the male flowers and in the rosettes on the tips of the 

 twigs of Salix amijfjdallna, and changes there to the pupa state. 



13. terminalis, Loew, Pr. Pos. Gym. 35. 28 (1850); Winn. 

 Nigro-fusca, antennis basi fuscis aut flavis, alis cinerascentibus, pedibus 

 fuscis subtus paUidioribus; Mas, antennis \2-articulatis ; Foem. anten- 

 nis 1%-articiilatis. Long. -|-1 lin. 



Antennce often brown or yellow at the base. Costa of the wings 

 squamose, stout, deep black ; veins dark brown ; transverse veinlet pale, 

 situate about the middle of the subcostal vein; cubital vein generally 

 distinctly curved towards the tip, ending at some little distance in 

 fi'ont of the tip of the wing ; second branch of the anal forming an 

 obtuse angle, slightly curved to the hind border. Male. Antennce nine- 

 teen-jointed, nearly as long as the body ; joints as long as their petioles, 

 rather longer towards the base. Fern. Antennce sixteen-jointed, half the 

 length of the body. Abdomen tawny beneath. Oviduct elongated, 

 without valves ; two last segments whitish-yellow. 



VOL. IV. " M 



