974 RHYNCHOPHORA. 
acuminate and feebly mucronate at the tip, and broadly flattened towards the suture anteriorly ; 
punctate-striate, the punctures becoming larger on the disc, the interstices densely punctulate and more 
or less convex throughout. 
Length 16, breadth 53 millim. 
Hab. Costa Rica (coll. Fry). 
One female. ‘This insect has the upper surface marked very much as in the 
Antillean Exophthalmus obsoletus (Oliv.). ‘The broader elytra, with convex interstices, 
and the less elongate larger ocellated spots (which are also placed nearer the middle 
of the disc), distinguish D. subocellata from D. guadriplagiata. 
2. Decasticha quadriplagiata, sp.n. (Tab. XII. fig. 22, 2.) | 
Q. Elongate, subfusiform, black; densely clothed with small cinereous scales, the elytra confluently or 
asymmetrically nigro- or fusco-annulate to near the apical declivity (the prothorax also in one specimen 
with four irregular dark annuli on the disc), and each with two large, oblong, subangular, dark-edged 
spots on the outer part of the disc and a smaller spot near the lower margin (the enclosed spaces whitish, 
when the yellow exudation is removed); the surface also set with a few scattered, minute, decumbent 
sete. Head and rostrum densely, finely punctate, the latter with a smooth median line extending back- 
ward to the narrow inter-ocular fovea; eyes convex; antenne rather slender, joints 1 and 2 of the 
funiculus equal in length. Prothorax transverse, bisinuate at the base, the sides parallel behind and 
obliquely converging anteriorly ; densely, finely punctate, and with some coarse scattered punctures along 
the sides, the disc broadly flattened down the middle, obsoletely canaliculate posteriorly, and arcuately 
depressed at the base. Scutellum small, flattened. Elytra elongate, subparallel in their basal half, 
acuminate and feebly mucronate at the tip, broadiy flattened towards the suture; very finely punctate- 
striate, the punctures becoming larger on the disc, the interstices densely punctulate, flat, 5 convex at 
its point of termination. 
Length 131-143, breadth 43-43 millim. 
Hab. Panama, Volcan de Chiriqui (Champion), Chiriqui (Trdétsch, ex Staudinger). 
Two examples, one with the whitish scales on the larger submarginal spots on the 
elytra covered by a yellow exudation. 
3. Decasticha tetrastigma, sp.n. (Tab. XII. fig. 23, 9.) 
2. Moderately elongate, subfusiform, nigro-piceous or black; clothed with intermixed green, golden, and 
cinereous scales, which are condensed into two large oblong patches on the outer part of the disc of 
each elytron; the surface also somewhat closely set with short decumbent sete. Head and rostrum 
closely punctulate, the latter canaliculate to the inter-ocular fovea ; eyes somewhat depressed; antenne 
slender. Prothorax transverse, feebly bisinuate at the base, obliquely narrowed anteriorly, densely 
punctulate, and with a few widely scattered coarse punctures, which become more numerous along the 
sides, the disc broadly depressed and uneven down the middle and sometimes with a small oblong fovea 
opposite the scutellum. Elytra elongate, subparallel in their basal half, acuminate and mucronate at the 
tip, broadly flattened on the inner half of the disc, and with two large, oblong, depressed spaces towards 
the sides ; punctate-striate, the punctures coarse on the disc. 
Length 10-123, breadth 33-44 millim. 
Hab. Costa Rica, Irazu (Rogers), Turrialba (Lankester, in U.S. Nat. Mus.). 
Three females, all more or less rubbed above and one with the oblong depressions 
on the outer part of the disc of the elytra coated with a yellow exudation. 
