J 1922 5 ] CLARK — TWENTY-FIVE NEW SPHINGIDAE 13 



Fore wing below, basal half brownish black; discal area dull pink; a 

 regular distal marginal brownish black band 2 mm. in width, and broaden- 

 ing to 4 mm. on R2. 



Hind wing below, dull pink with three irregular faint lines, one median, 

 and two postmedian, and all three parallel to distal margin; irregular 

 brownish black distal marginal band 2 mm. wide at inner angle, and nar- 

 rowing posteriorly until it fades away before reaching the anal angle. 



Gurelca chaochauensis sp. nov. 



Al. ant. long., d", 19 mm. Al. ant. lat., d\ 8.5 mm. Marg. ext., d", 

 10 mm. 



Habitat. — Chao-chau, eastern China. One male in coll. B. Preston 

 Clark, received from Dr. R. Luck and B. Gehlen. 



Most nearly resembling G. masuriensis sangaica Butler, but 

 easily distinguished by yellow stigma on fore wing, and bluish 

 white irroration on various parts of the body and upper surface 

 of the wings. 



Antennae, brown, upper quarter light gray but black apically. Palpi, 

 head, thorax and abdomen above, reddish brown. The hairs tipped with 

 bluish white, give an irrorated effect to the head and prothorax. Meso- 

 thoracic tegulae edged with bluish white. Abdomen above sparsely irro- 

 rated with this same color. Legs and abdomen beneath warm reddish 

 brown with bright yellow prominent lateral dots. 



Fore wing above: Variegated, ground tone dark brown; a small light 

 yellow stigma; a semicircular basal area, with its base 4 mm. in length on 

 costal margin, lighter in tone because irrorated with bluish white; a median 

 band extends narrowly and faintly from near the costal margin to the 

 hinder margin, narrowing at M2; an area extending from a point on costal 

 margin 8 mm. from wing apex to R3 on distal margin, is irrorated with bluish 

 white, with oblique bands. A roughly rectangular area about 4 mm. square, 

 lying between R3 and inner margin, is irrorated with reddish brown. Hind 

 wing above, light yellow with dark distal border narrowing anteriorly to a 

 width of 3 mm. and to a blunt point at anal angle. 



Fore wing beneath: Basal half brown, this color extending costally to 

 the irregular distal margin, and heavily along all the veins to this distal 

 margin; inner margin light yellow; postmedian area between the veins 

 yellow irrorated with rusty red to the distal margin; prominent bluish 



