782 
arrangement of the scales giving the appearance of 2 extra joints (PI. I, fig. 6), 
the first segment composed of 8 anchylosed segments; general color, dark-blue- 
green with scattered light-green scales on dorsal aspect; distal segment, strongly 
acuminate and spined, as are the two preceding, at their apices only. Venation 
of wings as in 9 except that mid cross vein and posterior cross vein are contigu- 
ous; supernumerary is farther removed from mid cross vein than in 9. (See Pl. J, 
figs. 9 and 10 for arrangement, of cross veins.) The posterior cross vein appears 
to be unstable in its position, varying in ¢ and Q in specimens other than 
the types, but the same relative position of the 3 veins is maintained in the 
sexes. Halteres basally swollen, ochraceous; knobs lighter with few dark hairs. 
Genitalia having basal segment bulbous and strongly spinose-setose, the distal 
segment long, slender, double-curved, the apical tooth being placed ventrally before 
apex, (Pl. :f, fig. 8.) Length of ¢ 12-13 millimeters; length of wing 8.25-8.75 
millimeters; length of palpi 7-7.5 millimeters. 
NEGROS OccIDENTAL, P. 1., Bago, Hacienda ‘Louisiana,’ Mailum, alt., 150 
meters; and Cresu, P. I., Cebu. (Banks, McGregor, Coll.) 
Time of flight, June, July; adults from bred specimens, 24 June, 1906. 
Types of ¢ and 9, No. 6071 in Entomological Collection, Bureau of Science, 
Manila, P. 1. There are 18 cotypes in the collection. 
The name of this species is suggestive of the fact that aside from its 
beautiful appearance, it not only does not bite, but its larve destroy 
enormous numbers of noxious forms of Culicide, having fed most will- 
ingly upon those of Culex fatigans Wied., Stegomyia scutellaris Walk., 
var. samarensis Ludl., and 8. fasciata Fabr., var. nov., in the laboratory 
and in their natural habitat, upon those of at least two other, as yet 
unidentified, species, one of which is probably Desvoidya sp. This insect 
has been reared and is very easy to breed. A full description of its life 
history and habits will soon be published. 
co. oe ee 
