208 Mr. F. W. Edwards' revision of 



this paper : to Mr. C. P. Alexander for the loan of the 

 type of S. howardi; to Dr. N. Annandale and Mr. F. H. 

 Gravely for the loan of the types of >S. flava and S. obscura 

 and of other specimens from the Indian Museum collection ; 

 to Dr. Giinther Enderlein for the loan of the type of S. 

 solocipennis and for information regarding S. annulipes; 

 to Mr. P. H. Grimshaw for specimens of S. didyma; to 

 Prof. J. C. H. de Meijere for the loan of all the Javan 

 specimens here mentioned; and to Dr. Yngve Sjostedt 

 for the loan of the types of S. crassicosta and S. sjostedti. 



Characters of the genus Styeingomyia, Lw. 



The genus has never been fully described, and as there 

 is very little variation in general structure among the 

 different species, a full generic description will save much 

 repetition in the subsequent part of this paper. It is 

 possible that a few characters may be mentioned below 

 which are not applicable to every species, but this has as 

 far as possible been avoided. 



Head roundish or slightly longer than broad, narrowed behind 

 into a fairly distinct neck; the eyes separated by a broad front, 

 and with a slightly raised tubercle between them at the base of the 

 antennae. On the front are three pairs of strong bristles; there 

 are two pairs of smaller bristles at the back of the eyes and a few 

 small hairs on the occiput. Proboscis not more than half as long 

 as the head. Palpi slightly hairy, four-jointed, the first joint not 

 much longer than broad, the second and third a little longer than 

 the first, and all three somewhat thicker apically ; the fourth joint 

 cylindrical, thinner than any of the others, and about half as long 

 again as the second or third. Antennae sixteen-jointed, the first 

 joint cylindrical and about two and a half times as long as broad, 

 the second nearly round, a trifle broader in diameter than the first, 

 the remaining joints oval, slightly decreasing in size apically ; the 

 first two joints are practically bare, the remainder bear a few stiff 

 hairs about the middle. 



Thorax. The prothorax is largely developed, the pronotum being 

 divided by a ti'ansverse suture into two portions, the anterior part 

 roughly triangular in shape and carrying a row of about ten strong 

 bristles which project over the occiput; the posterior portion is 

 more or less broadly horse-shoe shaped, and bears two bristles on 

 each side. The 7nesonotum is much less prominent than in most other 

 Tipulidae, but has essentially the same structure, being divided by 

 a V-shaped suture a little behind the middle, though the pair of 



