272 RHYNCHOPHORA. 
edge. G. tetrastigma approaches G. trivittatus, but the vestiture is very differently 
coloured. 
21. Gerzeus teniatus, sp.n. (Tab. XV. figg. 4,44, 2.) 
Rhomboidal, rather narrow, black; the prothorax with three narrow vitte (the median stripe continued on to 
the scutellum and the outer ones extending downwards) and the elytra with a line down the whole length 
of the fourth interstice, a short streak at the base and apex of the second, and a minute spot at the base 
of the sixth, thickly clothed with narrow pure white scales; the rest of the vestiture of the upper surface 
almost entirely black, that of the under surface (a broad space along the upper part of the propleura 
excepted) close and wholly white, the legs with hair-like white scales. Head finely punctate, shallowly 
foveate between the eyes; rostrum strongly arcuate, longer than the head and prothorax, rather slender, 
thickened and closely punctate at the base, the other portion much smoother, the antenne inserted at a 
little behind the middle, the antennal club ovate. Prothorax transverse, subconical, scarcely constricted 
in front, the sides parallel at the base; densely, finely punctate. Elytra triangular, narrowly punctate- 
striate, the interstices rugulosely punctate. Beneath densely punctate. Prosternum unimpressed 
behind the transverse subapical groove. Anterior coxe rather narrowly separated. Legs moderately long. 
Length 32, breadth 13 millim. ( 9.) 
Hab. Panama, Volcan de Chiriqui 38000 feet (Champion). 
One female, in very fresh condition. This insect has three narrow sharply-defined 
vittee on the prothorax and a line down the whole length of the fourth elytral interstice 
pure white. The prothorax is short and the elytra triangular. G. teniatus seems to 
be nearest allied to G. lineellus and the male therefore probably has a bispinose 
prosternum. | 
22. Gereeus flagellifer, sp.n. (Tab. XV. figg. 5, 5a, b, 2.) 
Rhomboid-elliptic, flattened above, shining, black; the elytra and the sides of the prothorax sparsely clothed 
with narrow, setiform, yellowish-white scales, the scales on the elytra clustered into one or two lines 
along each interstice, the vestiture of the under surface a little coarser and closer, that of the legs fine. 
Head finely punctate, transversely grooved between the eyes; mandibles toothed at the base beneath ; 
rostrum strongly arcuate, slightly longer than the elytra, rather slender, widened at the tip, almost 
smooth, except on each side at the base, the antenne inserted far behind the middle, the funiculus 
slender, with joint 1 greatly elongated, about as long as 2-6 united, the club rather narrow, oblong-ovate. 
Prothorax transverse, with the sides arcuately converging from the base, constricted and narrow in front; 
the dise sparsely, except along the smooth median space, and the sides densely, punctate. Scutellum 
oblong-subquadrate. Elytra rounded-triangular, sharply, narrowly striate, the interstices broad, flat, 
and finely biseriate-punctate. Beneath closely punctate. Prosternum shallowly sulcate down the middle 
anteriorly. Anterior coxe separated by abcut their own width. Tibie without visible uncus at the 
apex. 
Length 33, breadth 2 millim. ( 9.) 
Hab. Nicaracoa, Chontales (Janson). 
One female, rather worn. This species has the rostrum strongly arcuate, long, and 
almost smooth, the basal joint of the funiculus relatively very long, about half the length 
of the scape, the prothorax bare on the disc, the vestiture of the elytra arranged in 
one or two lines along each interstice, the tibia unarmed at the apex. The male 
probably has a bispinose prosternum. G. flagellifer approaches G. lineellus, near which 
it can be placed for the present. 
