J 1922 5 ] CLARK — TWENTY-FIVE NEW SPHINGIDAE 3 



gated character of the coloration seem to be of sufficient im- 

 portance to deserve a subspecific description. 



Herse convolvuli marshallensis subsp. no v. 



Al. ant. long., cT, 32 mm.; 9, 31 mm. Al. ant. lat., d\ 12 mm.; 9, 

 11.5 mm. Marg. ext., d\ 17 mm.; 9, 16 mm. 



Habitat. — Taluit, Marshall Islands. One male and one female in coll. 

 B. Preston Clark, received in exchange from the Berlin Museum, where 

 there remains a series. 



This form was mentioned by Dr. Karl Jordan in 1903, in 

 the 'Revision of the Sphingidae' (pp. 14, 15), but he did not at 

 that time feel it wise to give it a name. On comparison with a 

 long series of H. convolvuli, from many localities, insular and 

 continental, it appears to stand as a distinct race, and to merit 

 a name. 



Male: Head, thorax, and abdomen above and below, yellow irrorated 

 with brown. Abdominal tergites faintly pink. Fore wing above, ground 

 tone yellow, against which the black markings stand out sharply. Hind 

 wing above, uniformly light yellow, with the transverse bands, and the 

 sub-basal band faintly indicated. Fore wing below, yellowish brown, uni- 

 colorous, with no markings. Hind wing below, light yellow, with one dark 

 median transverse band; submarginal band lacking. 



Female: Head, thorax, and abdomen above and below, light gray irro- 

 rated with white. Abdominal tergites faintly pink. Fore wing above, 

 white irrorated with yellow, and with faint black markings. Hind wing 

 above, white irrorated with light brown, and with the transverse bands and 

 the sub-basal line faintly indicated. Fore wing below, unicolorous, faintly 

 pink, irrorated with brown. Hind wing below, of same color as the under 

 side of the fore wing, save for a distal marginal band of slightly darker tint, 

 the brown irroration being heavier. 



This form is nearer to a form from Aksu, Chinese Turkestan, 

 than to any other specimens of H. convolvuli to which I have 

 had access, but in marshallensis the male is much yellower, and 

 the female far whiter than in the Aksu form. 



