nev) and Ikth-hnown Tipulidte. 115 



one just divided, the lateral stripes crossing the scutum. 

 Scuteilum and postnotum wholly greyish ochreous. Abdo- 

 men brown, with an indistinct ochreous median longitudinal 

 stripe, interrupted on the hind mai-gins of the segments, and 

 continuous lateral pale stripes. Ovipositor shining ochreous, 

 anal valves slender, bare, but shorter and stouter than in 

 C. brobdignagius, not greatly exceeding the genital valves 

 in length. Legs almost wholly fulvous, only the ctenidia, 

 spurs, and extreme tips of the tibiae and tarsal joints black. 

 Wings yellowish brown, costal cell and stigma concolorous ; 

 a slight smoky appearance on the lower part of the cord ; 

 tips of cells 7^2 and ftg indistinctly pale, also bases of cells 

 lij and 2nd M^ ; indistinct pale areas also in centres of 

 cells An and Ax. Cross-vein ;• just touching base of Rg > 

 cell il/i just sessile on one wing, with a just perceptible stalk 

 on the other ; Mj and Mg slightly convergent. Halteres 

 with blackish knob and ochreous stem. 



Length of body 32 mm. ; wing 37 x 8 mm. 



China: mountains 50 mih-s north-west of Chengtu 

 [W. N. Fergusson) , 1 ? . In several respects, notably the 

 absence of black tips to the femora, the colour of the post- 

 notum, and the sessile cell M^^ this is quite a distinct species 

 of the brobdignagius group. 



Ctenacroscelis mikado (Westw.). 



This differs froQQ the other members of the brobdignagius 

 group in the colour of the postnotum, which is dark brown 

 in the middle, ochreous at the sides. The abdomen shows 

 no trace of a pale median stripe ; the ninth tergite of the 

 male has a short dense black pubescence round its apical 

 margin. The British Museum possesses a male and female 

 from Yokohama {H. Prior) and a female from Miyanoshita, 

 Japan (Yej'bury), which have been identified by comparison 

 with Westwood's type. 



EXPLANATION OF PLATE X. Figs. 13-19. 



Wings of Formosan Tipulidae. 



Fiff. 13. PselUophora scalator, Alex. X 3. 

 Fig. 14. P. laneipes, sp. n. X 3, 

 Fig. 16.' Tipvlaflavicosta, sp. n. X 2. 

 Fig. 16. T. terebratu, sp, u, X '2. 

 Fig, 17. T. arisanensis, sp, n. X 2, 

 Fig. ]8. 2\ biserra, sp. n. X 2. 

 Fig. 19. T. qiiadrifulva, sp. n. X 2. 



