March1] CLARK — SOME UNDESCRIBED SPHINGIDAE 101 
the fore wing is much more uniform than in the other races, and at the same 
time the dark brown markings are more distinct than in the other forms. 
The postmedian undulate band extending from the costal to the inner 
margin is broad, — 8 mm. at the costal margin, narrowing to 5 mm. at the 
inner margin, — and is very clearly defined in its outlines. The hind wing 
also is brown instead of black, as in the other forms. While these differ- 
ences are very marked, and may result in the separation of this form as a 
distinct species, still, until I have actually seen a specimen of P. brontes 
cubensis from Porto Rico, I prefer to consider this a subspecies of brontes. 
Protoparce schausi sp. nov. 
Plate X, figure 2. 
Al. ant. long., o’, 48 mm.; 9, 64 mm. Al. ant. lat., 1, 20 mm.; 9, 
27mm. Marg. ext., 1, 28mm.; 9, 38 mm. 
Habitat. — San Jose, Costa Rica, one male, Sept., 1903, collected by P. 
Biolley, received in exchange from Dr. William J. Holland of the Carnegie 
Museum. Iguala, Guatemala, one male. Tula and Juan Vinas, Costa 
Rica, one male and one female. The three latter specimens were given me 
by William Schaus, who collected them. Three males and one female in 
coll. B. Preston Clark. 
This species is intermediate between P. lichenea and P. florestan. Its 
general maculation is like both these species. But while its general colora- 
tion on the body and fore wing is gray with a green tinge, like P. florestan, 
the fore wing above is darker in tint — especially the semicircular median 
area on the costal margin, which is often so prominent in florestan. The 
fore wing is narrower than in florestan, and like lichenea in form, having the 
same concavity on the distal margin anterior to the hinder angle. Stigma 
minute, much smaller than in either florestan or lichenea. I should hesitate 
to separate this form, were it not that the four specimens show the same 
distinctly marked characteristics. 
Chlaenogramma obscura Clark. 
Plate X, figure 3. 
Al. ant. long., o’, 38mm. Al. ant. lat., 7,15 mm. Marg. ext., o’, 21 mm. 
Habitat. — La Rioja, Argentina. Two males in coll. B. Preston Clark, 
received from my friend, Dr. Eugenio Giacomelli. 
The description of the female of this species (Proc. N. E. Z. C., Vol. VI, 
p. 48, 1916) applies to these males. Both of the latter are somewhat worn, 
