130 



INSECTS OF SAMOA. 



36. Orthaea nietneri (Dohrn). 



Plociomerus nietneri Dohrn, Stett. Ent. Zeit., XXI, p. 404, 1860. 

 Pamera nietneri Stal, Enum. Hemipt. IV, p. 151, 1874. 



Orthaea tiietneri Kirkaldy, Proc. Linn. Soc. N.S. Wales, XXXIII, p. 358, 1908. 



Upolu :— Malololelei : 2,000 ft., 1 specimen, I2.iii.l924, 1 specimen, 

 14-30. vi.l 924, 1 specimen, 28.vi.1924. 



Tutuila :--7 60-900 ft., 1 specimen, iv.l918 (Kellers); Pago Pago: 1 speci- 

 men, 24.ix.1923 (Swezey and Wilder). 



Previously recorded from Cejlon, Burma, Java, Philippines, and Fiji. 

 The Queensland species 0. {Pamera) tricolorata Distant is closely allied to 

 0. nietneri and is possibly merely a subspecies. 



37. Orthaea ventralis, sp. n. (Text-figs. 18 and 19). 



Colour. — Head black, moderately shining with patches of short delicate 

 depressed silvery hairs towards apex and around ocelli and with a few scattered 

 long erect hairs ; eyes red with a few short erect hairs ; antennae fulvous yellow, 

 apex of first and second segments and apical third of third segment, slightly 

 infuscate ; base and apical fourth of fourth segment black, the region between 

 pale yellow ; rostrum fulvous yellow, its apex black. Pronotum sparsely 

 covered with short depressed hairs and a few long erect hairs ; anterior lobe 

 dark ferruginous brown, anterior collar and posterior lobe ferruginous ; humeral 

 angles dull yellow crossed by an obscure oblique dark brown mark, the interior 

 margm of the yellow spot, dark brown ; posterior margin with some obscure 

 dark brown suffusion. Propleura black, the acetabulae and the posterior margin 

 ferruginous brown. Scutellum ferruginous brown, basal third and apex dark 

 brown ; sparsely covered with short depressed hairs and with a few long and 

 erect hairs. Meso- and meta-pleura black, acetabulae and posterior lateral 

 angle of metapleuron, ferruginous brown. Hemielytra dull greyish-yellow with 

 longitudinal brown markings as shown in figure ; membrane dark brown with 

 vems at base, basal disc, and apex, greyish-yellow. Legs yellow, last tarsal 

 segment and claws, fuscous. Venter black, a large parallel -sided area on disc 

 extending to base of ovipositor, the connexivum, and some obscure more or less 

 longitudinal markings in the region of the spiracles, fulvous yellow. 



Structure. — Head about four-fifths as long as wide across eyes (21 : 26) ; 

 rostrum extending to middle of mesosternum, the basal segment scarcely 

 reaching to posterior margin of eye ; first antenjial segment extending by 



