172 M. W. NIELSOX 



Paratypes. 7 <$, same data as holotype (BPBM, Honolulu); 2 £, same data 

 as holotype, in author's collection. 



Biology. Unknown. Collection records indicate this species is prevalent 

 from December to March. 



Remarks. This subspecies can be separated from the nominate form by the 

 unicolourous testaceous colour of the body, and the distribution, which is Vudal, 

 New Britain. 



Tharra tahitiensis (Osborn) comb. n. 

 (Text-figs 464-468) 



Jassus tahitiensis Osborn, 19346 : 116. Holotype §, Society Is.: Tahiti (BPBM, Honolulu) 



[examined]. 

 Jassus insularis Osborn, 19346 : 117. Holotype g [not £, as stated by Osborn], Society Is.: 



Tahiti (BPBM, Honolulu) [examined]. Syn. n. 

 Coelidia tahitiensis Osborn; Metcalf, 1964 : 77. 

 Coelidia osborni Metcalf, 1964 : 68. [Replacement name for Jassus insularis Osborn, 19346, 



then a junior secondary homonym of Coelidia insularis Matsumura, 1914.] Syn. n. 



Length: g 6-30-6-70 mm, § 6-90-7-30 mm. 



General colour ochraceous in <J, fuscous in §; sexual dimorphism apparent. Crown, 

 pronotum and scutellum ochraceous; eyes deep fuscous; elytra unicolorous ochraceous in g, 

 light fuscous to deep fuscous in $, veins deep fuscous in $; clypeus and clypellus light ochraceous 

 to deep ochraceous. 



Head narrower than pronotum; crown long and narrow, produced distally beyond anterior 

 margin of eyes, distal length a little over one-third entire median length, striate radially, 

 lateral margins converging basally, disk elevated above eyes; ocelli small, situated anteriorly; 

 eyes large, occupying over two-thirds entire dorsal area of head; pronotum short, median 

 length less than median length of crown, surface finely knobbed; scutellum large, median 

 length greater than median length of pronotum; elytra elongate, veins prominent in 9, 

 somewhat obscure in $, appendix well developed, venation as in description of genus; clypeus 

 elongate, broad anteriorly, narrowed posteriorly, excised along lateral margins near antennal 

 sockets, without median longitudinal carina, somewhat depressed subapically, surface finely 

 granulose; finely rugulose along anterior third; clypellus with lateral margins constricted 

 medially, expanded apically- 



Male pygofer in lateral aspect with long, slender, curved process arising from caudoventral 

 margin, process with lateral margins broad basally, narrowed and attenuated along apical 

 three-fourths, almost needle-like; aedeagus in lateral aspect with dorsal appendage broad at 

 basal half, narrowed at apical half, apex slightly curved dorsad, without spines or flanges; 

 ventral appendage long, broad, tube-like, apex reaching apex of dorsal appendage; gonopore 

 apical; connective Y-shaped; style clawed apically; plate with distal segment elongate, lateral 

 margins broadly expanded medially. 



Female seventh sternum with posterior margin produced medially. 



Distribution. Previously known from the Society Islands (Tahiti), and now 

 recorded from the Austral Islands, Cook Islands and Pitcairn Island. 



Specimens examined. 



Jassus tahitiensis Osborn, holotype $, Society Is.: Tahiti, Papeari, 9.1X.1929 

 (Adamson) (BPBM, Honolulu). Jassus insularis Osborn, holotype $ |not female 

 as stated by Osborn, 1934a: 117], Society Is.: Tahiti, Fantana Valley, 1500 ft, 



