MICROVELIA. 129 
Two specimens. Distinguishable amongst its allies by the silvery-pubescent pronotal 
collar, the meso- and metapleura also being clothed with silvery pubescence. The 
whitish marks on the elytra are not so distinct as in If. albonotata. The neuration of 
the elytra is more feeble than in MW. panamensis. ‘The posterior femora are unarmed 
in the male. ‘The anterior femora are much swollen in this sex. 
5. Microvelia circumcincta, n. sp. (Tab. VIII. fig. 16, apterous ¢ .) 
Winged form. 2. Rather short, narrowing behind, black, the pronotum with a narrow transverse fulvous 
band in front ; the posterior margin of the pronotum, except in the centre, and also the lateral margins 
beneath, the prosternum, rostrum, coxs, and trochanters, the connexival margins, and the middle and 
apex of the venter, flavous; the antenne testaceous, with the apical joint darker; the legs fusco- 
testaceous, with the base of the femora flavous; the elytra brownish-black, streaked and spotted with 
pale brown; the under surface and pleura with a bluish-grey pruinosity, and clothed with short, fine, 
scattered silvery pubescence; the upper surface clothed with a fine pallid pubescence; the legs and 
antenne finely pubescent. Head with a smooth, fine, impressed median line; antenne long and very 
slender, shorter than the body, joints 1 and 2 subequal in length, 3 much longer than 2, 4 a little shorter 
than 3 and slightly longer than 2. Pronotum obtuse at the apex behind, with a distinct median ridge 
anteriorly. Abdomen and elytra comparatively short, the latter with prominent nervures. Legs slender, 
moderately long, the femora slightly thickened towards the base. 
Apterous form. 2. Fusiform, the dorsal segments of the abdomen ferruginous down the centre, the upper 
surface with a few scattered silvery hairs. 
Length 22-3}, breadth 13-14 millim. 
Hab. Guatemata, San Gerénimo in Vera Paz (Champion). 
One winged and two apterous examples. Allied to WM. paludicola, but less elongate, 
the elytra shorter and distinctly streaked with pale brown, the antenne longer and 
more slender, with the third joint slightly longer than the fourth. Also very like the 
North-American M. americana, Uhbler (winged and apterous specimens of which have 
been sent me by Prof. Uhler), differing from that insect in the form of the antenne 
(in MW. americana joint 4 is longer than 3 and joint 2 is shorter than 1, as in the 
Antillean M. pulchella, Westw.). 
6. Microvelia albonotata, n. sp. (Tab. VIII. fig. 17, winged ¢.) 
Winged form. 3. Moderately elongate, narrow; black, a narrow transverse line in front of the pronotum, 
and also the lateral margins beneath, the rostrum, trochanters, and coxe, and the connexival margins, 
flavous ; the head with two posteriorly coalescent stripes between the eyes, and the pronotum with an 
evanescent median line anteriorly, rufo-fulvous; the elytra brown, with two long oblique streaks 
extending from the base downwards, a long streak beyond these, a rounded spot near the costa beyond 
the middle, and an oval spot at the apex, silvery-white ; the antenne brown, paler at the base ; the legs 
brownish, with the femora indeterminately flavous at the base; the body very finely and sparsely 
pubescent, the costal margins of the elytra ciliate towards the base, the under surface with a bluish-grey 
pruinosity ; the antenne and legs pubescent, the antennz also with some longer hairs. Antenne very 
slender, not nearly so long as the body, joint 1 rather more than one-half longer than 2, 2 short, 3 about 
twice as long as 2, very slender, 4 much longer than 3. Pronotum rounded at the apex behind, with 
indications of a faint median ridge. Elytra with rather feeble nervures. Legs very slender, moderately 
long. 
' Length 23, breadth J millim. 
BIOL. CENTR.-AMER., Rhynch., Vol. II., dugust 1898. 17 
