242 



JAMES WATERSTON. 



Thorax. — Pronotum with the spiracular incision distinct, though not deep ; 

 surface rather coarsely reticulate and raised, posterior row of fourteen bristles, 

 none standing in front of the spiracular incision. Mesonotum with two rows of 

 bristles inside the parapsidal furrows ; the outermost with six to seven ; the inner 

 one complete near the suture, with one or two fewer bristles ; median sulcus 

 distinct ; on the scutellum the two sulci are very deep and the first bristle occurs 

 behind one-half ; all the pattern, both on mid lobe and scutellum, striate reticulate ; 

 all the sterno-pleural surfaces rough, the prepectus and episternite coarsely so. 

 Post -scutellum rough, carinate. Propodeon with the spiracle outside the lateral 

 ridge, notum and pleurae nowhere smooth, raised reticulate or roughened, six to 

 eight hairs below the spiracle, which distinctly opens on the pleurae. 



Fig. 6. 



Tetrastichus balieatus, sp. n., $ : a, left wing ; b, radius ; c, junction 

 of marginal and submarginal. 



Wings (fig. 6) twice as long as broad; length, 1-4 mm.; breadth, O'T mm. 

 Submarginal : marginal : radius, as 8:8:3. One bristle on submarginal, 15 on 

 marginal, about 12 on radius, and bare on a spot on the other side of the < line 

 of hairs. Beneath the marginal the hairs stand a little back and are more sparse, 

 while on the broad apex they are denser ; the posterior bare margin is rather 

 broad. Hind wings four times as long as broad ; length, 1 '2 mm. ; breadth, 

 '3 mm. ; submarginal : marginal, as 7:6. 



Legs.—¥oTe legs : coxae rough outside, with minute bristles near the base, and 

 about 12 scattered on the surface— 3 near the apex larger ; smoother on the inside, 

 with 5 to 6 fringing bristles at the apical edge and 2 or 3 in a vertical row above ; 



