OCHA.—TRABALA. 207 
Domingo, and 0. plagiata, from Brazil; he also provisionally retained in it Bombyx 
bibianca, Cramer, from Surinam ; the last-named has not the least resemblance to the 
other species and should be placed in another genus. Since that time several others 
have been added ; two inhabit our region and are here described. 
1. Ocha lauda, sp. n. (Tab. XXII. fig. 12.) 
Male. Primaries and secondaries pale greyish cream-colour ; primaries darkest from the costal margin to about 
the middle, with two minute black spots at the end of the cell, three spots close to the apex, a reddish- 
brown square-shaped patch about the middle close to the outer margin, and several very indistinct narrow 
greyish lines crossing from the costal margin to the inner margin; secondaries with two small reddish- 
brown spots at the apex, and two narrow indistinct waved lines above these, the outer margin and the fringe 
pale cream-colour, the hairs along the abdominal margin slightly yellowish: head, thorax, abdomen, and 
legs pale yellowish cream-colour ; palpi brown above, pale beneath; antenne blackish. Expanse 1 inch. 
Hab. Guatemata, Las Mercedes 3000 feet (Champion). 
One specimen of this species was obtained by Mr. Champion; it is quite unlike any 
other known to me. . 
2. Ocha lasthenia, sp. n. 
Male. Primaries and secondaries uniform reddish cream-colour, with the markings as in the preceding species, 
but very much more indistinct, the dark colour on the primaries being entirely absent: head, thorax, 
abdomen, and antenne pale cream-colour; legs pale; the anus slightly reddish. Expanse 1 inch. 
Hab. Mexico, Cordova (Riimeli). 
This insect is closely allied to O. /auda, in fact it may only be a variety of that 
species, but the entirely different colour of the antenne and several other minute 
differences have induced me to venture to describe it. Only a male was obtained, the 
female of O. /auda and of this species being unknown. 
TRABALA. 
Amydona, Walker, Cat. vi. p. 1413 (nomen preoc. ). 
‘Trabala, Walker, 1. c. vii. p. 1785. 
Walker included in this genus numerous species from India, Africa, and South 
America, his type apparently being Trabala humeralis from Port Famine; most of the 
other species are now placed in other genera. J somewhat doubtfully include in 
Trabala one species from the State of Panama. 
1. Trabala (?) fusca, sp. n. (Tab. XXII. fig. 11.) 
Male. Primaries dark blackish-brown, crossed beyond the middle from the apex to the inner margin by a narrow 
curved pale brown line which joins a second line at the apex, the second line crossing close to the outer 
margin and almost reaching the anal angle, the extreme margin pale brown, the fringe alternately dark 
and light brown; secondaries uniform brown, but not so dark as the primaries: head, thorax, and 
abdomen blackish-brown, almost of the same colour as the primaries; antennee and legs paler brown. The 
female similar to the male, but larger. Expanse, J, 14 inch; 9, 12 inch. 
Hab. Panama, Bugaba (Champion), Volcan de Chiriqui (22bbe, in mus. Staudinger). 
