24 



INSECTS OF SAMOA. 



Tegmina thick, fairly narrow, apex narrowed and rounded, reaching beyond 

 apex of abdomen ; suture distinct ; claval veins forking slightly distad of 

 middle, ending in apex of clavus, a distinct longitudinal median ridge from 

 base to shortly before middle ; venation obscure, forming a reticulation over 

 most of the tegmen. Wings rudimentary. 



The male genitalia consists of an outer, subtubular, curved periandrium 

 with an inner penis which is tubular at base and produced into two processes, 

 each bearing a curved process near middle ; the bridge is large. The female 

 genitalia have the ovipositor sheaths (dorsal valves) developed into a pair 

 of flat discs, which secrete wax ; the apex of the anal segment is produced into 

 a pair of flattened appendages, which also secrete wax. 



The position of this genus is an enigma to the writer. Superficially it 

 appears to belong to the Issidae ; but the genitalia of both sexes and the frons 

 suggest the Lophopidae, and it appears best to place it in the group containing 

 Kasserota and allies, which, according to Baker's classification, would be in the 

 subfamily Acarinae, of the family Lophopidae. The morphology of the 

 Eurybrachidae, Lophopidae and Issidae requires a much closer study than has 

 been accorded to it, in order to establish better characters for their separation. 



48. Buxtoniella hopkinsi sp. n. Figs. 20-25. 

 Male ; length 3-4 mm. ; tegmen 3 mm. 



Frons, clypeus and genae shiny black, a small yellow mark on gena at its 

 junction with side of clypeus, at base of frons a transverse green band, vertex 

 brownish. Anterior portion and lateral areas of pronotum black, shiny, posterior 

 portion yellowish with a tinge of gxeen ; mesonotum black ; antennae dark 

 brown. Legs black or dark brown, shiny, anterior, thin portion of first and 

 second tibiae white ; hind tarsi pale. Abdominal segments dark brown, 

 hind margin of sternites yellowish. Tegmina on basal half or two-thirds shiny 

 black, apical portion white, reticulations with dark brown or black spaces. 



Anal segment about as wide as long, base narrow, suddenly widening ; 

 genital styles large, meeting together in middle line and forming a cover like 

 the bow of a boat. 



Female ; length 4-6 mm. ; tegmen 4-9 mm. 



In build like male. Frons light yellow, base with a band of green between 

 two bands of red, vertex pale with a reddish tinge, clypeus brown. Anterior 

 half and lateral areas of pronotum reddish-brown, posterior portion greenish, 



