CREMNA. 387 
CREMNA. 
Cremna, Westwood, Gen. Diurn. Lep. p. 456 (1851). 
There are nine species of this genus known to us, two of which occur in our country ; 
the range extending from Guatemala throughout tropical America to South Brazil. 
Like Mesosemia the subcostal nervure of the primaries has four branches; the wings, 
too, are truncate as in that genus, and though it seems well placed here its style of 
coloration and markings readily distinguish its members. The subcostal nervure of 
C. eucharila emits two branches before and two after the cell; the middle discocellular 
and the upper radial leave the subcostal at the same point; the former, as well as the 
lower discocellular, are atrophied as they approach the lower radial; the costal and 
median sides of the cells are subequal. The secondaries have a strong basal nervure ; 
the upper discocellular is perfect, and meets the subcostal a little beyond the first branch ; 
the lower discocellular is bent in the middle, the upper half being atrophied ; the 
costal side of the cell is shorter than the median side. The front legs of the male 
have the coxa pointed, the trochanter being inserted about the middle; the femur 
= coxa; tibia < coxa; tarsus (single-jointed) < tibia, with a single spine at the end. 
The terminal tarsal joint of the female = second + third joints, and has a setose pad 
beneath. The first joint ends with a single spine, the second, third, and fourth with 
‘two. The terminal joint of the palpi is slender, about one fifth of middle joint, 
which is of nearly equal width throughout; the basal joint is slightly > the terminal 
joint. The antenne have thirty-five joints ( C. umbra thirty-two) and terminate ina 
well-defined club. The eyes are smooth. 
The secondary male organs have the tegumen as in Mesosemia; the harpagones 
terminate in a strong slightly upturned spine; the penis has a short strap in the usual 
position: the penis of C. wnbra has a filament exserted from its extremity ; we do 
not see this character in C. eucharila. The bursa copulatrix of the females of both 
these species have two conical chitinous points with finely granulated surfaces. 
1. Gremna eucharila. (Tab. XXXVIII. figg. 18¢, 192.) 
Napea frequens actoris, Hiibn. Samm. ex. Schmett. i. t. 84* (nec Cramer). 
Cremna eucharila, Bates, Journ. Linn. Soc. Zool. ix. p. 420 *, 
Alis fuscis sordide albo maculatis, posticis plerumque saturatioribus (interdum fere immaculatis), fascia sub- 
marginali ferruginea interdum lata interdum fere obsoleta; subtus maculis omnibus majoribus in posticis 
lineatis fascias transversas fere formantibus, venis quoque pallidis, anticis maculis singulis discalibus intus 
plaga magna nigricante conjunctis. 
Q major et alis dilutioribus maculis omnibus majoribus. 
Mesosemia chionea, sp. n. 
Speciei precedenti affinis et maculis cellularibus subtus eodem modo ornatis, anticis lineis fuscis paginz supe- 
rioris latioribus, subtus linea altera submarginali alba notatis. 
Hab. Gurana, Roraima (Whitely), Cayenne (Bar). 
Mus. nostr. 
3D 2 
