422 JAMES WATERSTON. 



Head as broad as deep ; eyes with extremely short but regular pubescence ; not 

 so approximated as in 0. pacificus ;* separated by more than an eye diameter, or 

 rather more than one-third of the greatest width of the head. Base line of the eyes 

 two and a quarter times the distance across the yertex. Scrobes triangular, but not 

 so narrow as in pacifiats, and drawn out transyersely, not yertically as in that species ; 

 clypeal edge medianly straight. Pattern more distinct than in pacifimis, but not 

 strong enough to cause any dulness. The rows of bristles between the scrobes are 

 divergent towards the mouth, and there are three or four bristles at each side before 

 the genal ridge. 



Antennae (fig. 5, a) : scape narrow, with subparallel sides. Pedicel stout and short 

 (three-eights of the scape) ; barely longer than deep. Funicle : 5, 7, 8, 9, 10, 10 — 

 all the joints transyerse. Club : 1,1, 1,^ — much swollen ; about twice as broad as 

 the last or four times the first funicular joint. Length of antenna, 0*35 mm. 



Mouth-parts (fig. 5, h) : labrum straight-edged ; maxillar}^ palpus, 4, 4, 6, 4 ; 

 the second segment widest and the fourth narrowest ; one bristle on the third, and 

 four on the fourth segments respectively. Labial palpus : 5, 2, 3. Mandible 

 (fig. 5, c) with an outer tooth, stout and deeply cleft from an inner, above and within 

 which the apex of the mandible is straight (minutely, feeebly denticulate, under one- 

 sixth objective, with no. 4 eyepiece). The apical and upper edges meet in rather over 

 a right angle. 



Thorax : the pattern on the pronotum is coarse, and there is no alternating row of 

 weaker bristles before the usual posterior row ; the mesonotal pattern coarse, but 

 not appreciably raised ; on the scutellum, however, the reticulation is both coarse 

 and raised ; less so on the axillae. There are fewer bristles all over than in pacijicus ; 

 about thirty before the suture, two to three on the axillae, and eleven to twelve on 

 the scutellum ; on the pleurae the pattern is distinct and practically all the sternal 

 surface is reticulate. 



Fore wings (7 : 3) broader than in pacijicus (fig. 6, a) ; marginal vein a mere point. 

 Hadius long, (fig. 6, h) with one bristle and a distinct bare area from in front to well 

 behind. Behind the hairless line is a patch of about a dozen minute bristles ; the 

 rest of the basal triangle being bare, except for a row below the submarginal. Sub- 

 marginal : marginal : radius : postmarginal, as 20 : 1 : 3 : 2. Length, 0*63 m.m. ; 

 breadth, 0*27 mm. Hind wings : the marginal bears three bristles above. Length, 

 0'4mm. ; breadth, 0*1 mm. 



Legs : the tarsal proportions are practically as in pacificus ; coxae more bare, 

 fore coxa with bristles, 2-3 apical, 2-3 along anterior edge, 8-9 external, and one 

 above coxa on inside ; mid coxae with about the same number of external bristles 

 as in the fore coxae. Tibiae hardly expanded ; sides subparallel. Tarsal teeth or 

 peg-like spines less numerous (fig. 6, c). One or two stronger bristles at the upper 

 apical angle of the tarsal joints and only a few scattered on the surface of the fifth joint, 

 not as in pacificus, with regular rows. The claws are more robust than in pacificus. 



Propodeon : both sides smooth with one or two rugae behind the spiracle. 



Abdomen : the transverse bands on the tergites are continuous, and not pale 

 medianly as in pacificus ; while behind the stylets, there is one row of bristles less. 



* Bull. Ent. Res., vi, p. 307, 1915. 



