234 ' " INSECTS OF SAMOA. 



membrane slightly longer tlian in hryani. Genital claspers distinctive, the left 

 clasper not provided with a blade-hke prong at middle. 



Length 4-9 mm., width across tip of scutellum 1-7 mm., across tip of 

 embolium 1-47 mm. Head : width -91 mm., vertex -346 mm. Antennae : 

 segment I, length -73 mm. ; II, 1-79 mm. ; III, 1-16 mm. ; IV, -86 mm. 

 Pronotum : length -99 mm., width at base 1-51 mm. Very similar to the male 

 in form and coloration. 



Savaii : — Safune : 3 specimens (including holotype and allotype), Matavanu 

 crater, 13.V.1924 (Bryan). 



30. Lygus oceanicus Poppius. 



Lygus oceanicus Poppius, Ann. Mus. Nat. Hung., xii, p. 392, 1914. 

 Samoa : — 1 specimen, Mar.-Aug., 1921 (O'Connor). 



Upolu : — Malololelei : 1 specimen, 20. vi. 1924 (Armstrong) ; 2 specimens, 

 ll.vii.l925 (Wilder). 



Savaii : — Salailua : 1 specimen, 22.V.1924 (Bryan). 



Tutuila :— 1 specimen, 1,000-1,200 ft., xii. 191 8 (Kellers) ; Fagasa : 1 

 specimen, 9.ix.l923 (Swezey & Wilder). 



This species was originally described from the island of Vate (Efate), New 

 Hebrides. The specimens in hand fit the original description in all important 

 characters, although there is some variation in degree of coloration. In some 

 specimens the pronotum is uniformly dark, except immediately behind the calli, 

 while in lighter specimens pale stripes appear as described for tagalicus (Stal). 

 However, the second antennal segment (1*86 mm.) is approximately four times 

 the length of segment I (-47 mm.), while the rostrum extends well beyond the 

 posterior coxae. The left genital clasper of the male is remarkably similar to 

 that of L, apicalis Fieb., and, in fact, I could not separate these species on the basis 

 of genital claspers. Lygus apicalis Fieb., L. tagalicus Stal, and L. oceanicus 

 Popp. are certainly very closely allied and if distinct may well represent a 

 subgenus of Lygus. 



Plesiolygus, gen. n. 



Allied to Lygus Hahn, as shown by the erect arolia, which are divergent on 

 apical half. Suggestive of a small Deraeocoris in the glabrous, shining surface 

 and punctate character of hemielytra, but the well-developed arolia place the 



