the lAtrly .S7ay«s 0/' Paltostoiiia scliiiicn". Il>l 



two outer lamiiue (fifj. H) nre trianpriilar, with acute apex ; 

 the inner C(l};e (». e. towards the ini(hne line) is convexly 

 curved, the outer ed};e (towards the side of tlie hody) is 

 sinuate, slightly eoneave towards the apex; near the inner 

 ed|^e the suh^tanee appears more delicate, foruiiuf; a paler, 

 more translucent area, the limits of which 1 have indicated 

 ])y a dotte<l line (Hj^. (J, /^a.)- 'l^he two inner lamince are 

 somewhat dilf'Tcnt in form from the outer and from one 

 auotiicr; fi<;. 7 shows their position relative to one another. 

 The entire suhstance of all four laminjc, seen under a hi^^h 

 power, somewhat ri'seml)lcs a piece of plant-tissue, consistinpf 

 of elongate darker areas separated by a network of more 

 translucent lines. 



V. Tni: Male Imaoo. ( PI. X. figs. 9-U ; PI. XI. fi-. l.').) 



Williston's systematic description of the ^ was published 

 in Trans. Ent. Soc. London, li^DC), pp. 209,270. On pi. viii. 

 of that work (figs. 27 a, h) are figured the wing (not quite 

 correctly, as shown below by Lamb), the head and proboscis 

 in side view, aiul the hypopygium in side view. ]t is only 

 intended here to add structural descriptions of certain parts, 

 particularly the mouth-parts. These descriptions are made 

 from the ^ dissected out of the pupa, various parts of which 

 have been mounted in balsam, and which has, as stated 

 above, been closely compared with one of Williston's co- 

 types. 



The specimen is sufTicicntly developed to contain a con- 

 siderable (quantity of pigment, the most strongly pigmented 

 portions being : [a) the eyes, (b) a dark spot at tlie ai)cx of 

 each of the palpi (see bcilow), (c) a dark s|)ot at the extreme 

 base of each femur, on the anterior side, at the poiiit of 

 articulation with the trcchanter (similar dark spots are 

 present on the femora of the J co-type and of the 2 ? ? ). 



There is no trace of dilfcrcntiation of the upper and lower 

 facets oC the cuoa. Auteniue (PI. X. fig. 9) 15 jointed; 

 joints 1 and 2 large, joint 2 j)yrirorm with apt x subtruncate, 

 joint 3 shorter than those which follow, much narrowed at 

 the base, succeeding joints about equally broad at base and 

 apex, joirit 5 slightly longer than joint 4, joints 6-10 sub- 

 equal in leufith, joints 11-15 shorter, joint 15 with apex 

 bluntly rounded. Seen uiuler high |)owcr, joints 4—15 bear 

 numerous fairly stout, short, sliarp-pointed hairs, directed 

 apexwards ; joint ."> b( ars them only on its apical half, and 

 on joints 1 and 2 they are scanty. 



Mouth-parts (PI. X. tigs. 9-11) conforming in general to 

 the us.ual Blepharoccrid type (the ($ has no mandibles) ; 



