with remarks on some alerrant genera of the Scoliidx. 65 



Thynnus luzonicus, n. sp. 

 ^. AntennsD shorter than the thorax. Clypeus very prominent 

 and almost pointed at the base, deflexed to the apex and Uj broadly 

 truncate. Mand.bles blunt at the apex, the tooth on the inner 



Zr 71 ■^)''' '^'^^'P^^- ^'^^ ^'^'^'y -d rather finely 

 punctured the interantennal prominence touching the base of the 

 clypeus ; the front with a median longitudinal sulca not quite reach- 

 ng the anterior ocellus. Thorax closely punctured, most finely on 

 the pronotum and on the sides of the mesonotum. Scutellum broadly 

 rounded posteriorly, with a slight subtuberculate prominence on tl,e 



segment wK T ""r^"^. ' "" P-^^^^^^^l^""^ covering the median 

 segment, which is vertically truncate. Abdomen shining, sparsely 



bro.^d as the second and vertically truncate anteriorly; the sixth 

 ventral segment with a spine on each side at the apical angles. The 

 dorsal plate of the epipygium is produced from the base, bounded at 



oLTn efh 'T^'^^^^^f ^^ ^^"^t-^- Hypopygium with a stout 

 pme on each side near the basal angles, thence rather broadly pro- 



SecfaWr" " ''' ''-' -'' ' ''-' '^'-' ^^^- ■' ^'^^'^^y 

 J^'V!!!" '^^P'"'' ^^' "^^^^^'^ibles except at the apex, the inner 



but noft V'";r ""'^"^ *'^ ^^^"°^"' ^ --- J^- behhid 

 bu not touching the eyes, two large spots between the antenna, a 

 small spot on each side on the vertex, the margins of the pronotum 

 narrowly a spot on the mesopleur«3 below the anterior wings, 

 another above t^ie base of the intermediate coxa3, the tegul^ a shor 

 oblique lii,e behind them, a longitudinal line on each side on the 

 posterior half of the disc of the mesonotum, a broad transve se band 

 on the middle of the scutellum and a spot at each of its basal angles 



stt'onT 7' *^^ Vr^"^ °' '''' ™^^^^^ -g--t --^ - J-gJ 

 mil f^.' f'\" ^r"^'^ interrupted transverse band near tSe 



tT. fift. ^ "?'"' ''^°"'"^^ ^^§™^°*^' ^ «P«* «^ «-h side on 

 the fifth and sixth segments, a spot at the apex of the first ventral 

 segment and one on each side on segments 2-5, the anterior coxa3 

 beneath, the apex of the intermediate and posterior coxa, and the 

 femora beneath yellow. Tibi^ and tarsi ferruginous. Wings 

 hyaline tinged with yellow, nervures black. 

 Length 21 mm. 



mth. Albay, S.E. Luzon (Whitehead expedition). 

 Ijpe m B. M. r j 



. This is a true Tky7inus of the typical group and is 

 interesting as extending the range of the genus far beyond 

 the hmits hitherto recorded. t> ^^ ueyona 



TRANS. ENT. SOC. LOND. 1908.— PART I. (mAY) 5 



