318 Mr. J. E. Colliti's Conlribution toivards knoivledge of 



scutellum less hairy, being bare about the middle of disc and with 

 only a few hairs about the sides. 

 Length 5-8 mm. 



H. dissimilis is at present known from only France and 

 Algiers. Specimens in Dr. Villeneiive's Collection taken at 

 Mascara. Algiers, in March and April, have been compared 

 with French specimens and found to be identical. 



4. Hy. personata n.n. 

 Syn. ohtusa Stein {ncc Zett.), Arch. f. Nat. Ixxxi, 162 (1916). 

 Schnabl and Dzied., Nova Acta, xcv, PI. 5, figs. 85, 8G 

 (1911). 



(Plate X, figs. 10, 12, 13.) 



^. Facial orbits rather narrower than in ohtusa. but jowls quite 

 as deep, consequently in profile the difference between the horizontal 

 and vertical axes of the head is rather greater. The upcurved bristles 

 near oral margin though shorter and less numerous than in ohtusa 

 are more numerous than in unistriata. Thorax appearing almost 

 equally greyish whether viewed from in front or behind, and any 

 indications of darker stripes very difficult to trace. Pre-alar bristle 

 strong, though only about half as long as supra-alar. Abdomen 

 distinctly tessellated except when viewed directly from behind, when 

 all tessellations disappear leaving a sharply differentiated central 

 brown stripe. The colour of rest of abdomen when so viewed is 

 distinctly more yellowish-grey than in ohtusa. Front femora with 

 posterodorsal and posteroventral rows of long, strong bristles, 

 well differentiated from the finer, long bristly hairs behind. 

 Middle femora posterovent rally with 6-7 long, strong bristles on 

 rather more than basal half only, otherwise comparatively short- 

 haired beneath and behind. Hind femora with a complete antero- 

 ventral row of long, strong bristles; posteroventrally with 5-6 

 finer long bristles on basal half (or rather more) only. Front tibiae 

 with only one posteroventral bristle; middle tibiae with one antero- 

 dorsal bristle at apical thiid, one posterodorsal at apical fourth, 

 two posteroventral, the lower one at apical fourth, the upper one 

 (which is really a posterior rather than a posteroventral bristle) 

 sUghtly above middle; hind tibiae with three widely-spaced, short, 

 anteroventral bristles, the lowest one very little longer than the 

 other two, 2-3 anterodorsal, 3 posterodorsal — the lower one very 

 long, much longer than the upper and longer than the middle one, 

 and 2-3 very short fine bristles behind just above middle — only a 

 little longer than other pubescence but more outstanding, very 



I 



