URSIDIUS.—LAMORCHESTES. 201 
the others moderately clavate and unarmed ; tibie almost straight, unarmed at the apex ; tarsi with joint 
3 strongly bilobed, 1 rather elongate, the claws divergent and appendiculate. 
The remarkable species from which the above characters are taken has quite the 
facies of a Halticid. In the saltatorial hind legs it approaches Rhychenus (Orchestes), 
to which, however, Ursidius is not very closely allied. The genus appears to have 
been unknown to Schénherr, though it also inhabits Brazil, and neither Kirsch nor 
Faust has dealt with any insect of this kind in their various papers on S.-American 
Curculionide. 
1. Ursidius halticoides, sp.n. (Tab. XI. figg. 22, 22 a-e, 3.) 
Oblong-ovate, dull, nigro- or rufo-piceous, the rostrum, antennex, and legs more or less, and sometimes the head 
and prothorax also, ferruginous; clothed with a very fine, short, yellowish-grey or fulvous pubescence. 
Head densely, rugulosely punctate, the eyes somewhat distant above and beneath; rostrum (3) mode- 
rately stout, somewhat thickened basally, about as long as the prothorax, rugulosely punctate, laterally 
sulcate towards the base, sparsely punctured at the tip, (@) a little longer and smoother; joint 1 of 
the funiculus stout, obovate, nearly as long as 2 and 3 united, 2-7 slender, 3-5 longer than broad, 6 and 7 
slightly shorter. Prothorax rounded at the sides, a little more narrowed in front than behind, densely, 
minutely punctate. Hlytra moderately long, narrowing from a little below the shoulders, which are not 
prominent, transversely depressed on the dise towards the base; faintly punctate-striate, the interstices 
flat and densely punctulate. 
Length 24-3, breadth 1-13 millim. (¢ 9.) 
Hab. GuatemaLa, Purula in Vera Paz (Champion); Panama, Bugaba, Volcan de 
Chiriqui, Petia Blanca (Champion). 
Ten specimens, one only being from Guatemala, and varying a good deal in size and 
colour. A nearly allied unnamed form from Brazil is contained in the Pascoe collection 
at the British Museum. 
LAMORCHESTES, gen. nov. 
Rostrum stout, curved, slightly longer than the prothorax, without scrobes ; antennze inserted at the base of 
the rostrum, straight, directed outwards, the scape very short, oval, the funiculus 7-jointed—joint 1 
globose, stouter than the scape, 2-7 very slender, scarcely thickening outwards, 2 a little longer than 
the scape, 3-7 much shorter,—the club ovate; eyes exceedingly large, oval, subapproximate above ; 
prothorax small, strongly transverse, subtruncate at the base; scutellum triangular, small; elytra 
broadly subquadrate, flattened ; pygidium visible ; prosternum extremely short in front of the anterior 
cox, which are very narrowly separated; legs rather long and slender; femora equally and very 
feebly clavate, unarmed; tibie straight, each unguiculate at the apex; tarsi with joint 1 elongate, 
nearly as long as the others united, 3 strongly bilobed, the claws with a very long curved tooth reaching 
outwards nearly as far as the claw itself. 
The remarkable insect referred to this genus is closely allied to Orchestes (section 
Isochnus, Thoms.), except as regards the structure of the antenne, these being straight, 
owing to the extremely short scape, much as in Tachygonus. ‘Ten species of Orchestes 
are known from North America, but none have hitherto been certainly recognized 
from south of the United States *. 
* Rhynchenus crassus and R. rufescens, Fabr., from South America, still remain unidentified. 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 4, Apri/ 1903. 2DD 
