BY ROWLAND E. TURNER. 133 



56. T. (Aeolothynnus) dispersus, n.sp. 



£. Clypeus narrowly truncate at apex, smooth, finely punctured 

 at base. Head and thorax closely punctured; anterior margin 

 of pronotum straight and slightly raised; scutellum not much 

 elevated. Median segment shining, almost smooth at base, deli- 

 cately transversely-rugulose at apex. Abdomen elongate, finely 

 punctured; the segments smooth at base and slightly constricted, 

 apical margin narrowly depressed. Hypopygium subtruncate 

 at apex, angles slightly produced but not forming spines, 

 apical spine acute. Black; clypeus except base and centre, two 

 minute spots between antennas, margins of pronotum, tegulse, a 

 spot on scutellum, postscutellum, a small spot on mesopleurae, 

 another at base of intermediate coxae, a small spot on each side 

 of first abdominal segment and a transverse spot on each side of 

 the four following segments close to apical angles pale yellow; 

 tibiae ferruginous. Wings hyaline, iridescent, nervures fuscous, 

 stigma ferruginous. Head and thorax with thin grey pubescence. 

 Length 8 mm. 



Hob. — Victoria (French). 



Allied to T. iridipennis Sm. 



57. T. (Aeolothynnus) collaris Guer. 



Lophocheilus collaris Guer., Mag. de Zool. xii. p. 13, 1842(<J). 



%Tachynomyia nitens Sauss., Reise d. Nov. Zool. ii. 1, Hym. 

 p.l25,n.2, P.4, fig.65, 1867(<J). 



(J. Clypeus narrowly produced and truncate at apex. Median 

 segment delicately transversely rugulose. Fourth and fifth 

 abdominal segments the widest; hypopygium elongate, narrowly 

 truncate at apex, with a fairly long apical spine. Saussure 

 mentions a spine on each side of the apical spine, but although I 

 have seen the angles slightly produced in one specimen, they 

 could not be said to form spines. In the specimens I have seen 

 the yellow band on the posterior margin of the pronotum is only 

 developed on the sides. Guerin's description is very poor and 

 I am doubtful as to the correctness of my determination. Length 

 9 mm. 



