4 HETEROCERA. 
being peculiar to the State of Panama, and one ranging to Para at the mouth of the 
Amazons. All are Neotropical. 
1. Pachygonia subhamata. 
Perigonia subhamata, Walk. Cat. viii. p. 1027. 
Pachygonia caliginosa, Feld. Reise d. Nov. Zool. ii. Lep. Th. iv. t. 75. f. 10”. 
Hab. Muxico! (mus. Oxf), Cordova (Riimeli); Panama, Chiriqui (mus. Staudinger). 
—VENEZUELA!; Amazons 2, Para !. 
2. Pachygonia hoppferi. (Tab. I. fig. 1.) 
Pachygonia hoppferi, Staud. Verh. zool.-bot. Ges. Wien, 1875, p. 118’. 
Hab. Panama, Chiriqui (Ribde, Arcé, Mus. D.). 
Differs from P. subhamata in having the pink bands on the secondaries more distinct 
and wider apart. 
3. Pachygonia ribbei, sp. n. (Tab. II. fig. 2.) 
Brown, paler beneath: primaries glossy greyish brown from the base to beyond the middle, several indistinct 
ochreous streaks along the costal margin; an ochreous spot close to the apex, but not touching the costal 
margin: secondaries dark brown, paler at the base, and slightly ochreous at the anal angle: head, thorax, 
and abdomen brown above and pale ochreous heneath. Exp. 24 inches. 
Hab. Panama, Chiriqui (Ridbe). 
Differs from the other species of this genus in having the bands of the secondaries 
smaller and duller. 
UNZELA. 
Unzela, Walker, Cat. viii. p. 161 (1856). 
One species only of this genus is as yet described. It has a very wide distribution, 
ranging from North America to South-east Brazil. 
1. Unzela japix. 
Sphinx japix, Cr. Pap. Ex. i. t. 87. f. C’. 
Unzela japis, Walk. Cat. viii. p. 162°; Butl. Trans. Z, 8. ix. p. 535°. 
Tylognathus japys, Boisd. Sp. Gén. des Lép. Hét. i. p. 293%. 
Hab. Untrep Status ! 2,Panama, Chiriqui (bbe), Rio Chagres (mus Staudinger). — 
Guiana, Surinam‘*; Brazit‘4, Rio 2°. 
I have only seen one specimen of this species from Central America, which was 
taken near Chiriqui. 
