4:00 SAMUEL II. SCUDDER ON 



cally longitudinal, internomedian branches, which arise- earlier and cover an area of about 

 equal extent. The anal furrow is strongly arcuate, being bent strongly in the middle 

 and terminating slightly further out than the humeral field. The anal veins consist 

 first, of two rather distant nervules subparallel and next to the anal furrow, and next, 

 of two sets of offshoots of the inner of these, the outer of which form, with these, a 

 siibfusiform series directed toward the tip of the anal furrow, the other inner set sinuous, 

 crowded, and apparently impinging on the basal half of the border within the anal furrow. 

 The length of the wing is 10.5 mm.; its breadth 4.1 mm. It comes from the English 

 Purbecks and was kindly sent me for study by Rev. P. B. Brodie to whom I take pleas- 

 ure in dedicating' it. 



*o 



Mesoblattina Mantelli sp. nov. 



PI. 47, fig. 9. 



An almost completely preserved wing, curiously resembling and curiously different 

 from M. Brodiei. The veins are of the same color as the rest of the wing, Avhich is 

 slightly dingier than the dirty chalky-white stone. It shows an upper surface, but is 

 somewhat distorted by lying on an uneven surface, so that its convexity is not quite so 

 apparent as it would otherwise be. The anal area has its independent and somewhat 

 marked convexity, and the anal furrow, as well as the inner limit of the flat depressed 

 humeral field, is deeply impressed. The wing is obovate with subparallel sides, but with 

 somewhat irregular shape, the costal margin being straight from the middle of the hu- 

 meral field to the middle of the outer half of the wing, and then curving strongly and 

 pretty regularly downward to the lowermost part of the rounded apex, Avhere it is met by 

 the uniform and slight arcuation of the inner margin from the anal furrow outward; for 

 the margin of the anal area has an independent arcuation, also regular but much stronger. 

 The whole wing is a little less than three times as long as broad. The humeral field 

 is sublanceolate, finely tapering, reaching mare than two-fifths way to the wing tip. The 

 mediastino-scapular vein is very strongly sinuate, terminating just above the tip of the 

 wing, and the costal area is broadest in the middle of the wing where it is scarcely less 

 than half its width; the branches are longitudinally oblique, the basal ones simple, the 

 apical compound, arcuate, and less longitudinal than the basal. The externomedian 

 branches, which are considerably forked apically, arise from two forked branches, which 

 unite close to their divarication opposite the tip of the anal furrow and far within the 

 tip of the humeral field; as a whole they are longitudinally and broadly arcuate. The 

 internomedian branches, few in number and hardly forked, arise scarcely earlier and have 

 a similar course, but are more strongly arcuate basally; they extend far out to the lower 

 angle of the tip of the wing, while the externomedian branches occupy the tip only. The 

 anal furrow is strongly bent in the middle, turning sinuously outward at tip but even 

 then does not extend quite so far as the humeral field. The anal nervules are obscurely 

 preserved, but appear, as in M. Brodiei partly to impinge on the basal half of inner 

 margin, partly to converge toward the tip of the anal furrow. 



The wing is 10.4: mm. long, and 3.65 mm. broad. It comes from the English Pur- 

 becks, and was received from Mr. Brodie. It differs from M. Brodiei in the form of 



