30 KA.NSA.3 UNIVERSITY SCIKnCE BULLETIN. 



Genue Phyllaphis Koch." 



Head convex and smooth. Antennip moderately long, ilie 

 third joint nearly twice the length of the fourth, the fifth equal 

 to the sixth in length. Beak very short, wings long and broad, 

 stigma long and trapezoidal, veins clear Body covered with a 

 cottony secretion. Honey-tubes rudimentary. Style almost 

 obsolete. 



Lachnus longistigma Monell. Plate VI, fig 39. 



Head dark brown. Antenna' of a darker brown, except the 

 base of the third segment which is a lighter brown ; all the 

 joints are hirsute ; length of joints : I, 0.19 mm.; II, 0.199 mm.; 

 Ill, 1.23 mm. ; IV, 0.59 mm. ; V, 0..59 mm. ; VI, 0.39 ram., 

 including the unguis, which is 0.11 mm. long; total antennal 

 length, 3.15 mm. Sensoria large and circular but indistinct; 

 eight on the third joint in a single row ; three small and two 

 large ones ou the fourth joint ; one near the distal end of the 

 fifth as large in diameter as the segment itself ; one large 

 with four small laterad this at distal end of the sixth proper, 

 and one small at the base of the unguis. Three large sensoria 

 on the subcostal vein of the front wing. Eyes are black, and 

 the ocular tubercles are small. The two dorsal ocelli are not 

 as prominent as the cephalic one. The beak is concolorous with 

 the head and extends a little caudad of the mesocox?e, being 

 0.27 mm. long. 



The prothorax is short and narrower cephalad than caudad. 

 The thorax is dark brown. The wings are light brown, 

 venation brown or dark. The first two discoidals are robust, 

 with smoky borders. The cubitus is frail, faintly bordered 

 with browMi, and obsolete at the base. Stigmal vein is nearly 

 straight and very faintly bordered with brown. The coloration 

 of the subcostal extends around the distal end of the wing, end- 

 ing between the distal end of the third cubital and the stigmal 

 vein. The stigma is 0.90 mm. long by 0.22 mm. broad. The dis- 

 tal end of the stigmal cell is plainly marked, making the stigmal 

 cell alone 0.22 mm. long, but the stigma proper, 2.17 mm. 

 long. Total wing expansion is 19.00 mm. The caudal wing 

 shows a marked peculiarity toward specialization in that it 

 often has the second discoidal branched. The costal vein has. 



14. No ropresentativo in text. 



