RHAGOVELTIA. 139 
Apterous form. 3 9. Fusiform; the pronotum abbreviated and rounded behind, bordered with flavous all 
round, the mesonotum also bordered with flavous behind; the abdomen with a pale stripe down the 
centre. 
Length 4-53 ; breadth of the pronotum in the winged form 13-2, of that of the apterous form 14-1} millim. 
Hab. Panama, Bugaba (Champion). 
Found plentifully on the surface of the water of small streams in the forest-region 
of the “tierra caliente,” the winged form predominating, three apterous specimens 
only, all males, having been obtained. ‘This insect is extremely like R. elegans, Uhler, 
from the Island of Grenada, it being of the same size and colour; but differs from that 
insect in having the terminal genital segment in both sexes produced into a spiniform 
process, and the two long inner teeth of the posterior femora less approximate. Both 
species have a long, slender hook at the apex of the posterior tibize, a character over- 
looked by Prof. Uhler. 
9. Rhagovelia insularis, n. sp. (Tab. IX. figg. 3, winged ¢ ; 3a, apex of 
abdomen, ¢ .) 
Winged form. Moderately elongate ; the head brownish-black, flavous in front; the pronotum rufo-castaneous, 
bordered broadly in front and narrowly behind with flavo-fulvous, and with a similarly-coloured, evanescent, 
median line anteriorly ; the elytra blackish-brown ; the body beneath and the connexivum flavous, the 
venter and the pleura greyish-white ; the antenne and legs black with a faint neous lustre, the antenne 
at the base, the anterior femora beneath and at the base above, the hind femora beneath, the coxe, the 
anterior trochanters, and the intermediate and hind trochanters in part, flavous; the body, legs, and 
antenne very finely pubescent, the head, the sides of the body, the three basal joints of the antenne, and 
the legs somewhat thickly clothed with long hairs, the legs and joints 1 and 2 of the antenne also with 
long scattered sete. Head with a smooth impressed median line; antenne rather slender, joint 1 one-half 
longer than 2, 2-4 decreasing in length, 4 pointed at the tip. Pronotum sparsely punctured, the posterior 
portion triangular, obtuse at the apex. LElytra extending to a little beyond the apex of the abdomen. 
Legs rather stout; the posterior tibiae armed with a long, slender hook at the apex in both sexes; the 
intermediate tarsi with joint 2 shorter than 3. 
3 2. Posterior femora moderately incrassate, armed with five or six acute, curved teeth of unequal length, 
these extending from about the middle to near the apex, the first, second, and fourth the longest, the 
inner two a little more distant than the others; posterior tibie finely and obsoletely denticulate on their 
inner edge. 
Apterous form. Fusiform ; the pronotum abbreviated and rounded behind, the mesonotum and the dorsal surface 
of the abdomen reddish-brown, the sutures and the lateral margins of the segments grey. 
Length 4-43; breadth of the pronotum of the winged form 14-12, of that of the apterous form 13 millim. 
Hab. Panama, San Miguel in the Pearl Islands (Champion). 
Thirteen specimens, ten of which are winged. Very like &. uncinata ; but differing 
from that species in the simple terminal genital segment of the abdomen, the shorter 
and slightly stouter legs, the reddish dorsum of the pronotum, and the armature of the 
hind femora, the two inner teeth being more approximate than in that insect. The 
less elongate form, shorter legs, and the reddish pronotum separate it from &. elegans. 
The hind femora are similarly formed in both sexes. ‘The second and third joints of 
the hind tarsi are very closely articulated. 
18* 
