220 RHYNCHOPHORA. 
One specimen. A minute, narrow, very convex, smooth form, with the sutural 
stria only of the elytra visible, the rostrum comparatively long and slender, and 
abruptly bent downward near the base, and all the tibie sharply angulate externally. 
D. longirostris is relatively narrower than any of the other Central-American members 
of the genus. 
19. Diorymerus rubricatus, sp.n. (Tab. XII. figg. 26, 26 a.) 
Ovate, very convex, shining, black, rufous above, the median portion of the head and the tip of the rostrum 
more or less rufescent. Head with a few minute punctures, shallowly foveate or transversely depressed 
between the eyes ; rostrum arcuate, very stout, short, finely punctate, the antennz inserted at about the 
middle. Prothorax smooth. Scutellum very smal]. Elytra smooth, with a distinct sutural stria only, 
the others obsolete or barely traceable. Beneath sparsely, coarsely punctate, the ventral segments 
3 and 4 smoother. Femora finely punctate, sulcate and unarmed beneath. Tibiz almost straight, each 
acutely dilated near the base externally. 
Length 21, breadth 13 millim. 
Hab. Panama, San Miguel in the Pearl Is. (Champion). 
Two specimens. Shorter and more ovate than D. nigripes, the elytra with a single 
(sutural) stria only, the rostrum short and stout, the tibia more acutely dilated near 
the base, the body black beneath. Allied forms occur in South America. 
20. Diorymerus nigripes, sp.n. (Tab. XII. figg. 27, 27 a.) 
Rhomboidal, narrow, very shining, rufous, the antennw, eyes, and legs nigro-piceous. Head sparsely 
punctate, transversely depressed between the eyes; rostrum curved, a little longer than the prothorax, 
slender, sparsely punctate, the apical portion smoother and flattened, the antenne inserted behind the 
middle. Prothorax rapidly narrowing from the base, smooth. Scutellum very small, subquadrate. 
Elytra triangular, finely striate, the strie faintly punctate, becoming deeper towards the suture and 
obsolete towards the sides, the sutural stria sharply defined. Beneath coarsely, sparsely punctate, the 
ventral segments 2-5 smoother. Legs rather slender, sparsely punctate ; femora sulcate and unarmed 
beneath ; tibie straight, each angularly dilated externally at the base. 
Length 2,%,, breadth 12 millim. (92.) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
One specimen. A small, narrow, very shining, rufescent form, with blackish legs 
and antenne, the tibie straight, and each angularly dilated on the outer edge near 
the base. The sutural striais deep, the others very fine or obsolete. 
21. Diorymerus erythronotus, sp. n. (Tab. XII. fig. 28, 28a, ¢; 284, 
anterior leg.) 
Subrhomboidal, shining, black, rufous above. Head finely punctate, convex; rostrum shorter than the 
prothorax, feebly curved, moderately stout, dull, and rugulosely punctate to the tip in the ¢, the apical 
portion much | more slender, shining, and sparsely punctate in the 9, the antenne inserted towards the 
base. Prothorax with minute scattered punctures, which become coarser and closer on the anterior lobe 
and along the basal margin, the base depressed on each side of the median lobe. Scutellum small, 
subquadrate. Elytra subtriangular, finely, sharply striate, the sutural stria deeper, the strie feebly 
punctate, the interstices each with minute scattered punctures along the middle, the suture slightly 
