420 JAMES WATERSTON. 



Head narrow and compressed, very wide (about 5 : 4), eyes separated by two 

 diameters on the vertex ; rather small, their base line cutting mid line at one-half. 

 Frons not deeply excavated, hardly more than gently concave, as seen from 

 above ; post-scapal bare area narrow, facial and genal bristles longer towards the 

 mouth- edge. 



Antennae : length 34 mm. ; very long and slender ; scape swollen on basal half 

 and narrow, with subparallel sides distally, except at the expanded apex ; about 

 sixteen times as long as broad ; pedicel a little over one-third of the scape, with the 

 breadth between one-fourth and one-sixth of the length ; very much longer than the 

 second funicular (first after the normally developed ring joint), after which the antenna 

 is a little expanded. Club narrower than the last funicular joint. Proportions after 

 the scape :— 34, 22, 20, 19, 18, 17, 16, 16, 16, and club, 22 (7 : 5 : 10). In the same 

 ratio the breadth for the first four joints enumerated increases from 6 to 9. The 

 succeeding four have a thickness of 10, which on the last funicular and club decreases 

 to 8. There are four sensoria on the second funicular joint. 



Thorax : all the sutures deep, with the areas delimited by them slightly swollen ; 

 punctures large (and therefore fewer than in Siomaioceras), each with a strong, some- 

 what flattened, longish bristle ; integument between the punctures smooth. 

 Pronotum rather long, anteriorly rounded, with the usual anterior ridge indicated 

 only at the sides. Scutellum bidentate, narrow, shorter than mid lobe and pronotum 

 combined, without sulcus, and so overhanging the propodeon that its broad approxi- 

 mated teeth are in line with the posterior teeth of the latter. Metapleurae entirely 

 covered with stiff bristles, of which there are a few in front of the bare mid femoral 

 impression ; the latter with seven to eight transverse rugae. 



Propodeon with two well-defined angles on each side behind the spiracle ; the first 

 narrow, the second broad, both a little upturned. At the middle of each of the inner 

 ridges from the petiole to the spiracle there is a low upward projection ; between 

 the inner and the notopleural ridges are 8-6 quadrate cells. The large median cell, 

 twice transversely divided, is flanked by two outer cells with similar divisions, and 

 between these again and the inner ridge are 6-7 cells, of which that behind the median 

 projection of the ridge is much the largest. The metapleura are swollen, and there 

 are no well-defined lateral patches of bristles flanking the insertion of the petiole. 



Fore wings over two and a half times as long as broad ; length, 3 '15 mm. ; breadth, 

 1*15 mm. Submarginal : marginal: radius, as 26:5:1. There are only about 

 twelve bristles on the long submarginal, below which, until near the uprise, the wing 

 is quite bare ; on the marginal (after the pustules) and radius combined there are 

 twenty to twenty-three bristles, stouter and a little longer than any found elsewhere. 

 The rest of the wing is evenly covered with similar short bristles which are slightly 

 longer near the marginal. The bare longitudinal line occurring in most Haltichellines 

 just below one-half is clearly indicated, but there are no scales anywhere. Hind 

 tvings : length, 2*3 mm. ; breadth, 0*65 mm. Near the base the submarginal comes 

 close to the costa, and here there are about twenty-five closely-set short bristles, and 

 many more on the vein itself ; there are about nine minute bristles in the frenulum. 



Hind legs : femur much swollen ; behind the major tooth are forty-nine denticles ; 

 apical tibial comb or fringe of over forty long bristles. 



