bo 
~i 
Lo 
- RHYNCHOPHORA. 
sides, obliquely narrowed anteriorly, feebly bisinuate at the base, the disc with a very large, oval or 
rounded, excavation extending from the base to near the apex; the entire surface shallowly, confluently 
foveolate and finely punctate. Scutellum transverse, small. Elytra broad, slightly narrower in d, 
inflated, oval, usually more or less tumid on the flanks at a little below the shoulder, with a common, 
deep, transverse excavation at the base, and a very large, broad, oblong or oblique depression on each 
side of it between the third interstice and the outer margin, the apices conjointly produced and usually 
obliquely truncate or mucronate at the tip ; punctate-striate, the third interstice smooth, widened, sinuous, 
and more or less raised, the others sometimes raised or transversely wrinkled. Second ventral segment 
with a large, deep, angular, plicate excavation on each side behind in both sexes, the first broadly 
depressed down the middle in the male. Wings short, useless for flight. 
Length 101-133, breadth 3,%-53 millim. (¢ @.) 
Hab. Costa Rica (Van Patten), Rancho Redondo 1700 metres (Underwood), Poas, 
7000 feet (Schaus, in U.S. Nat. Mus.), Turrialba 6500-8800 feet (Lankester, in U.S. 
Nat. Mus.), Irazu (U.S. Nat. Mus.). 
I have seen eight specimens of this peculiar insect, varying in the colour of the 
scales on the excavate portions of the surface (which are often covered with an 
ochreous exudation) and in the greater or less inflation of the elytra. The sutural 
region of the elytra to about the middle and the raised portions of the prothorax are 
usually almost bare. ‘The deep, angular, plicate depression on each side of the second 
ventral segment is noteworthy. | 
EUSTALES. 
Eustalis, Germar, Ins. Spec. Nov. p. 4538 (1824). 
Eustales, Schénherr, Curc. Disp. Meth. p. 113 (1826); Gen. Cure. 1. p. 649; Lacordaire, Gen. 
Col. vi. p. 118. 
Phaops, Sahlberg, Peric. Ent. p. 25 (1828) (sine descr.). 
A single species from the Pacific slope of Guatemala is referred to this genus *, the 
type of which is Curculio thunbergi, Dalm.; both these insects (and HL. adamantinus, 
Germ., also) have the surface of the body densely viridi-squamose, and the prothorax 
and elytra albo-lineate. The chief structural characters are as follows :— 
Rostrum longer than broad, dilated inferiorly towards the apex, with a densely squamose, sharply-defined, 
_ triangular nasal plate, and the upper portion parallel-sided, the gene not or feebly marginate, the scrobes 
lateral and running direct to the lower anterior portion of the eyes, the latter oval, large, and not very 
prominent ; scutellum well developed; elytra lobed at the base, regularly 10-striate, the outer strie 
entire; anterior tibiz abruptly bowed, stout, denticulate and unguiculate; posterior tibie laminate and 
densely clothed with long scales at the apex, the glabrous articular surface short and feebly cavernous. 
1. Kustales curvimanus, sp.n. (Tab. XII. figg. 20, 20a, 4, ¢.) 
é. Elongate, narrow, black, the legs and antennz piceous ; thickly clothed with glittering pale green scales, 
the prothorax with two lines on the dise and another on each flank (all of them extending on to the head), 
and the elytra with the suture, the third interstice, and a broad stripe along the flanks, more densely set 
with imbricate whitish scales. Head and rostrum rugulosely punctate, the rostrum much longer than 
* E. impositus and £. stellaris, Pase., are here placed under Exophthalmus. 
