96 



Dacus fascipennis, Wiedemann. 



(Zoologisches Magazin, Vol. Ill, 28, 42, 1817-23; Auss. Zweifl,, Vol. II, 

 519, 9, 1828-30 : Van de Wulp, Tijdsehr v., Entom. XXIII, 161, 42, 

 pi. ll,f. 4, 1880; Bactrocera fasciatipennis, Doleschall, Natuurk Tijdschr, 

 van Nederl. Indie, X, 1856, 412, 56, pi. 3, f. 1. Java and Sumatra). 



There is a specimen in the Royal Museum of Hungary, said to have been 

 determined by Wiedemann from Astrolobe Bay, New Guinea. Wiedemann 

 says : " Fuscous marked with yellow, costal portion of the wings dusky with 

 three honeycomb-like blotches at the end." Length: Male, 3 J lines. Habitat 

 Java. 



Dacus emittens, Walker. 



(Pro. Linnean Society, Vol. IV, 1860, 152-184; Osten-Saken, Annali del 

 Museo Genova, XVI, 1881, 460.) 



A very large species, dark brown to ochreous, with the hyaline wings 

 clouded with a fuscous blotch towards the apical half, and stained along the 

 costal nervure with a similar tint. The head yellow ; sides of the thorax 

 darkest ; scutellum stained, probably yellow, with two stout bristles on the 

 hind margin. The abdomen yellow, with a very distinct pattern, the base 

 lightly marked with black, an elongated spot or short bar in the centre of 

 the basal half, with a narrow black line crossing the centre of the back, with 

 a parallel one meeting it, and on the divisions on either side two black spots, 

 the lower one smallest. 



Several specimens in Mr. Verrall's collection, labelled Celebes, by Bigot. 



Dacus frauenfeldi, Schiner. 

 (Reise liTovara Zoology Diptera, 1868, p. 262.) 



" Dorsal surface of thorax bJackish-brown, with three broad, grey, longi- 

 tudinal stripes, formed or continued from the fine, glittering, white pubescence, 

 the outer ones close to the edge of the dorsal surface ; the sides at base of 

 the wing-bosses on the shoulders, and scutellum reddish-yellow, the latter 

 with a broadened middle, black at the base ; apex of the thorax shining 

 black, broadest on the sides. Abdomen with a transverse yellow band inter- 

 rupted in the middle at the margin of the second segment with two yellowish 

 black stripes, sometimes white, run down to the anal segment, the latter 

 yellow with black line behind, moderately short ; sheath of ovipositor 

 reddish-yellow ; the under surface of the abdomen completely yellow. Head, 

 orange, with the bristles black ; antennae with a black spot on the sides 

 below the base ; antennte bright orange, broad, the last joint truncate at the 

 tip ; the bristle bare. Legs pale yellow, blackish at base, thighs clouded 

 with reddish-brown, the tibise, legs, and tarsi reddish-brown. Wings hyaline, 

 with two arched bands ; the upper, beginning at the base, follows the cubital 

 vein up to the little cross vein, then goes over this and the hinder cross vein 

 to the edge of the wing, the lower one covering the anal vein. The little 

 cross vein is very oblique ; the hinder one, too, is oblique, placed outwards, 

 and both coming close together. Anal cell suddenly narrowed, and long 

 drawn out underneath the 4th. 



" One male and two female specimens. Habitat, Stuart Island." 

 "The clouding of the base of the thighs is often very variable in the 

 brightly-coloured male, the stripes on the abdomen broader than in the 

 female. I have carefully compared all Walker's species of Dacus, and found 

 none that could be identical with my species. It seems to me, moreover, that 

 the most of these species (Walker's) may not belong to the genus Dacus." 



