344 TiPULiD.i:. 



at the tip, the labella and the palpi brown, the 1st joint pale brown ; 

 the back of the head with a triangular black mark ; the antennae in 

 the male show no difference, but in the female the emargination 

 on the underside of the joints is wholly absent, each joint being 

 simply rather narrower at its tip than at its base. Thorax with the 

 median dorsal stripe continued very distinctly on each side in 

 front, the colour extending pronouncedly over the collare for some 

 little distance ; the t«'o outer dorsal strijies terminating somewhat 

 suddenly, but their edges contiuued as two very fine lines to the 

 side margin ; the post-sutural black shining stripes larger, almost 

 filling the upper surface, and, besides turning down to the root of 

 the wings as in P. serricornis, continued forward along the edges 

 of the suture itself, passing over to the side of the mesothorax, 

 and almost or quite reaching the shoulders. Scutellum wholly 

 shining black ; the metanotum bright lemon-yellow, unmarked ; 

 the sides of the thorax bright lemon-yellow, as in fact is the 

 dorsum also, and there is a large black spot in each sex on the 

 upper part of the sternopleura. Abdomen with the base black, 

 whilst each segment has a broad black* apical band, wider in the 

 female than in the male, the last segment or two being black in 

 both sexes. Genital organs of the male light brownish yellow, 

 apparently formed as mP. serricornis; in the female the ovipositor 

 is normal, long, shining, straight, light brownish yellow. Wings : 

 the discal cell somewhat smaller ; the veinlets of the upper branch 

 of the 1st longitudinal vein emerging simultaneously ; the stigma 

 dark brown. 



Length, S 11 millim. ; $ 14 millim. to tip of ovipositor. 



Described from a single specimen of each sex from Namoya, 

 Ceylon, ix. 1909 {E. E. Green). 



Types in the Indian Museum. 



247. Pachyrhina demarcata, sp. nov. 



(S $ . Head rather deep yellow, with a median brown stripe 

 on vertex extending from a little above the antennae to the neck. 

 Proboscis yellow above, bro\\n below, labella brown ; palpi yel- 

 lowish to brown, often a little pale at juncture of joints. Antennae 

 with scape yellow ; flagellum black. Thorax : male with ground- 

 colour rather bright yellow ; dorsum occupied by three rich brown 

 stripes ; the median one distinctly continued over the collare and 

 neck till it joins the stripe on the vertex of the head ; this stripe 

 broadens a little before it reaches the anterior margin, narrowing 

 as it reaches the suture, beyond which it is continued, rather 

 narrower and unbroken, to the posterior mai'gin of the yellow 

 scutellum ; the outer stripes join the median stripe anteriorly, 

 and posteriorly they are imited unbroken to the post-sutural 

 stripes, which in their turn are continued to the hind margin of 

 the thorax, thence, in a paler shade over the pleurae on each side 

 of the scutellum, continuing again over the metanotum, leaving 



