Maren 1] CLARK — SOME UNDESCRIBED SPHINGIDAE 105 
Dolba hylaeus floridensis subsp. nov. 
Plate XI, figure 4. 
Al. ant. long., #7, 26 mm.; 9,32 mm. Al. ant. lat., 7, 11mm.; 9, 
14mm. Marg. ext., 7, 14 mm.; 9, 19 mm. 
Habitat. — Parish, Florida. Four males and three females in coll. B. 
Preston Clark. 
The Florida specimens of D. hylaeus differ markedly from the Northern 
race, in that they all show less contrast between the dark and light mark- 
ings of both fore and hind wing above. The sharply white markings of the 
Northern form become, in the Southern race, gray and more indistinct. 
The difference on the under side of both fore and hind wings is still more 
marked. The geminate postmedian line of the fore wing below, bordered 
posteriorly with a white hand, becomes in the Florida form vestigial, the 
wing being brown, unicolorous. The hind wing below also is brown, uni- 
colorous, save for a faint postmedian band parallel to the distal margin 
and an irregular longitudinal white area parallel to the anal margin. 
These differences are well marked, and their occurrence adds 
one more form to the group of Sphingidae occurring in the Gulf 
States and westward. 
Smerinthus cerisyi ophthalmica ab. nigrescens 
Plate XI, figure 5. 
Al. ant. long., 7, 29 mm.; 9, 34mm. AI. ant. lat., 7,13 mm.; 9, 
15mm. Marg. ext.,.o‘,16mm.; 9, 18 mm. 
Habitat. — Mission San José, California, 1500 ft. alt., May, 1917. Three 
males and three females in coll. B, Preston Clark. 
This series was raised from larvae, except one which came to a light. 
The ground tone of the fore wing above is dark olive brown, the lighter 
shading being silvery gray. The coloring of the hind wing above is darker 
than the normal form, the pink area is less extended than in pallidulus, 
while the circular blue marking, so prominent in the other forms of cerisyt, 
is here very faint and only 3 mm. in diameter. The ground tone of both 
wings beneath is dark olive brown, with the lighter shading silvery gray, as 
on the upper side. 
It is a shorter-winged insect than f. pallidulus. 
