520 Professor R. Newstead on Homoptera of a new genus, though the hemipterous fauna of St. Helena has not hitherto been shown to have much affinity with that of tropical Africa. See also pp. 459-67. VI. Homoptera (Psyllidae and Coccidae) collected in the Lagos District by W. A. Lamborn. By Prof. R. Newstead, F.R.S. Plate XXIX. PSYLLIDAE. Rhinopsylla lamborni, sp. nov. Length 3'9-4'2 mm. ; greatest width of thorax, 1"4-1'50 mm. ; width at vertex of head, "SS-'TS mm.; length of fore-wing 4"5-6 mm. Head slightly birostrate in front; face lobes wanting; eyes hemispherical, prominent ; wings with the upper and lower branches of the cubitus very long, stigma wanting; hind tibiae in $ (fig. Id) and middle tibiae in ^ (fig. le) very strongly pectinated distally; meso-sternites with a lateral and distal horn-like tubercle. General colour ochraceous buff; thorax striped. Female. — Head, inclusive of the eyes, as broad as the thorax ; posterior margin of vertex arcuate; front with a sharply defined median suture on either side of which is a deep punctate depression. Antennae long and slender, of ten segments, the third incrassate and strongly punctate when seen in optical section in cleared specimens. Thorax slightly arched and finely punctate ; pronotum clearly defined and normally not depressed below the head. Abdomen markedly attenuated distally ; pygidium (fig. la) with the circum-genital glands (fig. 16) arranged in curiously contorted double lines. Legs with the hind tibiae very strongly pectinated, the teeth black, and each with, a faint lateral tooth. Wings (fig. Ic) hyaline, nearly twice as long as broad, costa strongly arched; there is a small infuscated, submarginal, spinose area between the radius and the upper fork of the upper cubitus, and a similar marginal infuscation between the four succeeding veins ; branches of the upper and lower cubitus very long. Colour ochraceous-buff or ochraceous; pro-notum with a well-defined and relatively broad dark-brown margin ; II
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