120 



INSECTS OF SAMOA. 



fourtli black. Pronotuin anteriorly bright yellow posteriorly yellowish-grey, 

 a broad transverse band anteriorly across the pronotal scars, extending posteriorly 

 in a median narrow stripe, blue-grey or black ; a pair of irregular spots one at 

 each humeral angle but not reaching the extreme angle, a small spot in middle 

 of posterior margin more or less fusing with end of median longitudinal stripe, 

 and a small spot on each side of the lower half of the median stripe, black or 

 brownish-black ; scattered punctures dark brown, lateral carina pale yellow. 

 Scutellum bluish-grey or black with a bright yellow Y-shaped laevigate area 

 extending to apex of scutellum. Propleura and sternum blue-grey or black, 

 the sternum anteriorly yellowish-white, the acetabulae (ambulacra) and posterior 

 margins of pleura broadly, pale yellow ; mesopleura blue-grey or black, the 

 ambulacra pale yellow, the posterior margins of the pleura narrowly dull yellow, 

 mesosternum shining black ; metapleura, dull blackish-brown, the inner angle 

 below orifice and a longitudinal lateral stripe fulvous, auriculate lobes of orifices 

 yellow, ambulacra and posterior lateral angles of pleura, yellowish- white. 

 Hemielytra hyaline, tinted cinereous, clavus black or blue-grey with an obscure 

 fulvous median stripe on basal half ; costal margin very narrowly, a row of 

 punctures along outer vein, apical half of inner vein and apical margin of corium 

 dark brown ; membrane hyaline with an obscure fuscous median stripe. Legs 

 pale yellow ; femora sparsely covered with brown spots, apices of tibiae and tarsal 

 segments infuscate. Abdominal tergites yellow tinted with red, with a few 

 irregular brown flecks ; whole of apical tergite overlying pygophor, and the 

 posterior lateral angles of the connexival segments, black. Venter yellow, 

 with a broad lateral reddish suffusion, with its inner margin infuscate, especially 

 posteriorly where the infuscation develops into several brown marks on the 

 fifth, sixth, and seventh ventrites ; ovipositor sheath in $ black ; eighth ventrite 

 in with a median brown spot ; pygophor in ^ yellow with a brown spot on 

 each side towards its base. 



Structure. — Head porrect, tylus not strongly deflexed, as in G. pacijicus Kirk 

 (Fiji), about three-fourths the length of ^^ronotum (24 : 33) and about as long as 

 half the width across eyes (24 : 50) ; eyes larger than in G. pacijicus about equally 

 broad but much longer, less convergent anteriorly and much less pedunculate. 

 Relative length of antennal segments 10 : 29 : 18 : 19 (c^). Rostrum extending 

 to hind coxae. Pronotum about two-thirds as long as wide across humeral 

 angles (33 : 47) and slightly longer than wide anteriorly (33 : 27) ; anterior and 

 posterior lobes rather more distinctly separated than in G. pacijicus by an obscure 



