Novembwllj CLARK — NEW SPHINGIDAE 77 



eral direction, curving slightly costad, but with shght irregularities, to 

 SC5, reaching it at a point 10 mm. from the distal margin, where it fades 

 away. Lines 2, 3, 4, are light, and run from points slightly distant from 

 the inner margin, parallel to each other, nearly to the costal margin. They 

 curve slightly costad, and diverge from line 1 anteriorly. Line 5 is broader 

 than 2, 3, 4, and runs from a point midway on the inner margin to the wing 

 tip, curving distally as it approaches that point. Line 6 is faint, and runs 

 from a point on the inner margin, midway between line 5 and the hinder 

 angle, to the wing tip, curving toward line 5 as it approaches that point. 

 Lines 7 and 8 run submarginally from the inner margin to the tip of the 

 wing. There is less contrast in color than in X. damocrita. 



Hind wing above : The submarginal band diverges somewhat more from 

 the distal margin anteriorly than in X. damocrita. 



Fore wing below: The black vein dots are less prominent than in X. 

 damocrita. 



Hind wing below: The median bands are less pronounced than in X. 

 damocrita. 



The genitalia show no marked differences from X. damocrita, but the 

 claspers are somewhat more blunt at the tips. 



Basiothea medea ab. nigrita ab. nov. 



Al. ant. long., c?, 21 mm.; 9 , 20 mm. Al. ant. lat., cf, 9 mm.; 9 , 8.5 

 mm. Marg. ext., d', 11.5 mm., 9, 11 mm. 



Habitat. — Tananarivo, Madagascar. One male and two females in 

 coll. B. Preston Clark, received from Professor C. Lamberton. 



The marked characteristic of this aberrant form is the color 

 of the hind wing above. In normal medea the entire hind wing 

 is yellow, except the dark marginal band, from which it is 

 sharply separated. In this aberration the wing is warm reddish 

 brown, shading gradually into the dark marginal band, but 

 with no sharp line of demarcation. There is in addition a me- 

 lanic tendency throughout the entire insect. 



