404 RHYNCHOPHORA. 
ridge on each side of it anteriorly. Scutellum rugose. Elytra wider than the prothorax, moderately 
long, concave and undulate on the disc, with a subangular, laterally projecting prominence behind the 
similarly-shaped humeri; very shallowly, narrowly, and irregularly punctate-striate, the interstices 
uneven, alutaceous, and rugosely punctate, here and there longitudinally raised, the fifth with a very 
large, oblong, and the seventh with a much smaller, tubercle near the apex, the apices also with a 
prominent flattened tubercle. Beneath closely punctate, rugose and alutaceous along the sides. 
Prosternum slightly hollowed down the middle. Legs alutaceous, strongly rugose, and subgranulate. 
Length 64-83, breadth 33-4 millim. (@.) 
Hab. Mexico, Toxpam in Vera Cruz (Sal/é).—Cotompia (coll. Pascoe, in Mus. Brit.). 
Two females, differing only in size. A remarkable form and unlike any other Barid 
known to me. 
BUSCKIA, gen. nov. 
Mandibles curved, toothed within, decussate; mentum strongly transverse; rostrum very short, curved, stout, 
widened towards the tip, the scrobes oblique and rapidly descending; antenne with a closely-articulated, 
stout, gradually widened funiculus, the shining basal joint of the club * cylindrical and forming a continuous 
outline with it, the club scarcely longer than the two preceding joints united, pointed, and with its three 
outer joints extremely short and closely pubescent (fig. 46); prothorax shortly tubulate in front, 
deeply bisinuate at the base; scutellum free, concave, transverse ; elytra broad, subcordate; pygidium 
subvertical, ventrally exposed, strongly transverse; prosternum with two short, impressed, oblique 
lines extending forward to the deep transverse subapical groove, the basal process broad, flattened, 
and notched in the middle behind ; mesosternum depressed, exposed ; anterior coxe separated by fully 
their own width; legs short; femora excavate at the apex only beneath, the anterior pair with a minute 
tooth ; tibie short, broad, angularly dilated near the base and at the apex externally (fig. 4c); tarsi 
with the bilobed third joint broad, the claws minute and connate at the base; body robust, broad, 
rhomboid-ovate, almost glabrous above. 
Type, B. leeythidis. 
The type of this remarkable new genus, which has more the facies of a Contrachelus 
or Lhyssomatus than of a Barid, was found breeding in the nuts of a species of 
Lecythis¢ on the canal-zone at Panama, in July 1907, by Mr. Aug. Busck. The 
structure of the antennz is unique, so far as I am aware, amongst the Barids, the 
club here forming a continuous outline with the funiculus, The tibie are formed as 
in Pseudoptatus, Acanthobaris, and various Diorymert. 
1. Busckia lecythidis, sp.n. (Tab. XXII. figg. 4, 4a-c, 2.) 
Opaque and alutaceous above, shining beneath, black; the punctures on the under surface and legs each 
bearing a very minute setiform scale. Head finely punctate, shallowly foveate between the eyes, the 
latter large; rostrum much shorter than the prothorax, finely punctate, the antenne inserted at about the 
middle, the joints 3-7 of the funiculus transverse, the first joint of the club almost bare. Prothorax 
transverse, gradually narrowing from the base to the short tubulate portion; densely, finely punctate, the 
narrow interspaces raised, sinuous, and confluent, forming longitudinal ruge, the disc with indications of 
a smooth median line. Elytra much wider than the prothorax, undulate, narrowly punctate-striate, the 
punctures sharply defined, the interstices densely alutaceous, broad, flat, each one (the sutural excepted) 
with a much interrupted, sharp, narrow, median ridge, the ridges becoming more complete at the sides. 
* It is less elongate than shown in our figure 4 4. 
+ Order Myrtacee. ? LZ. coriacea, DC. (cf. Biol. Centr.-Amer., Botany, i. p. 414). 
