THEMEROPIS.—ECTYRSUS. 221 
angular, and obliquely truncate in front; deeply punctate-striate, the punctures somewhat distant one 
from another, the interstices convex, rugulose, 3 with a large, compressed, erect, subconical prominence at 
the middle. Intermediate femora dentate, the posterior pair unarmed. Anterior tibiz strongly bowed, 
serrate and ciliate on their inner edge to about the middle. 
Length (excl. head) 31, breadth (at the widest part of the elytra) 2 millim. 
Hab. British Honpvuras, Rio Hondo (Blancaneauz). 
One specimen. Differs from 7. divergens and T. fimbriata in the form or the 
position of the elytral prominences (these latter being strongly divergent in both 
the South-American species), and also in the unarmed posterior femora. 
ECTYRSUS. 
Ectyrsus, Pascoe, Journ. Linn. Soc., Zool. xi. p. 177 (1871); xii. p. 33. . 
A Tropical-American genus hitherto including three species, EL. villosus, Pasc., from 
Rio Janeiro, and EL. pustulatus and FE. albohirtus, Faust, from Venezuela, the two others 
now added being closely allied forms. All of them appear to be very rare. Lctyrsus 
has much the facies of an Otidocephalus. The intermediate and hind femora are 
unarmed ; the tarsal claws are simple and somewhat approximate; the anterior tibiz 
are abruptly truncate and unguiculate, or acutely produced, at the apex. 
1. Kctyrsus elongatus, sp.n. (Tab. XII. figg. 20, 20a.) 
Elongate-ovate, shining, nigro-piceous, the antenne, the anterior tibia and tarsi, and the intermediate and 
hind legs, ferruginous or obscure ferruginous; somewhat thickly clothed with very long, erect hairs, 
which are mostly whitish in colour, with a few black ones intermixed, the elytra with a dense, oblong 
cluster of black hairs on the suture a little before the middle. Head finely punctate; rostrum strongly 
curved, a little longer than the prothorax, punctato-sulcate at the sides, for the rest smooth, appearing 
carinate in its basal half, the antenne# inserted near the middle, the club of the latter elongate, nearly as 
long as the funiculus; eyes very large, contiguous, coarsely facetted. Prothorax slightly broader than 
long, feebly constricted in front, rounded at the sides, the latter sinuate towards the base, coarsely, closely 
punctate. Elytra oblong, considerably wider than the prothorax, subparallel in their basal half, the 
humeri swollen ; coarsely and deeply punctate-striate, the interstices convex, narrow, sparsely punctulate, 
and transversely wrinkled. Anterior tibia acuminate at the apex, the intermediate and posterior pairs 
_ unguiculate. 
Length 34-34, breadth 13-13 millim. 
Hab. Gvaremata, San Isidro (Champion); Nicaracua, Chontales (Janson). 
‘One specimen from each locality. More elongate than Z. villosus and E. gibbipennis, 
and easily distinguishable from both by the dense, oblong cluster of black hairs on the 
suture before the middle. In the Guatemalan example of /. elongatus the whitish 
hairs show a tendency to form a transverse patch across the suture beyond the middle. 
‘The present species also differs from Z. villosus in having the villosity of the upper 
surface sparser and shorter, the prothorax more sinuate at the sides behind, and its 
punctuation coarser and less close. LE. pustulatus, Faust, is smaller and less elongate, 
‘and has the anterior femora ferruginous, and the punctuation of the upper surface not 
so coarse. 
