102 Orthonhapha brachycera. 



zigzag-bands, the lower margin, and tlie upper corner bluisli. Oceiii 

 wanting. Botli sexes have a velvet black spot just above the antennæ; 

 the feniaic lias on the broad front a shilling blaclc, transverse band 

 above the antennæ, and above this, on each side, a round spot, and 

 in tiie middie a small spot. all velvet black. The mouth parts are 

 chiefly as in Chnjsops, but the proboscis is relatively siiorter, the labelia 

 are of abouth half the length of the proboscis, moderately broad ; the 

 mandihles are microscopically serrated along tiieir whole inner mai'gin. 

 but it requires a magnifyiug power of nearly 40<» diam. to see it; the 

 second joint of the maxillary palpi is long, somewhat curved. and 

 lying down tlie front side of the proboscis; in the male there is a 

 deep, membranous excision in the epistonia from the mouth edge and 

 upwards, and the second joint of the palpi is short, thickened. slightly 

 curved and .somewrhat pyriform with the apex outwards; tiie palpi 

 are generally porrect. Thorax is rectangular; abdonien somewhat 

 flat, as broad as or only a little broader but considerabiy longer than 

 the thorax, consisting of seven, not transformed segments; the first 

 has in the dorsal middie line a flat triangular excision. Legs 

 simple; the middie tibiæ with two apical spurs. Wings fumigated, 

 with a reticulation of hyaline, curved lines and spots: the anterior 

 branch of the cubital fork with a veinlet. When resting the wings 

 lie nearly parallel, or only very little open, but in a somewhat roof- 

 shaped way. 



I do nol know the larva. but Brauer describes it [A'erh. zool. bot. 

 Geseli. XIX, ISO'.l, 921, Tab. XIII. Fig. 7— S), and I quote the following 

 from him. The larva is cylindric and resembles a 7'rt6rt?ms-larva, it 

 has twelve segments in all : from the fourth to the tenth segment it 

 bears laterally and ventrally small warts, four on each segment (when 

 the head is included, it must be from the fitfli to the eleventh segment, 

 which is also shown in Brauer's figure. and whal agrees with the 

 faet in the TabdiiiisAarya); the last segment bears the anus, lying in 

 a semiglobular swelling; this segment has on its tip a short, conical 

 process with a vertical split, leading to the terminal spirades; the 

 small prothoracic spiracles are siluated on the second segment, and 

 the larva thus aniphipneustic. (In comparison with the metapneustic 

 7\ihanns-\Rrva. I think this not very probable, and it is to be remem- 

 bered, tiiat Brauer has only exaniined an exuvium.) The segments 

 show the same curious, longitudinal striation as in Tabanus. The 

 mouth parts resemble those of 7\iba)ius and consist of a median 

 labrum, hookformed mandibles, less chitinised maxillæ with a spined 

 basal piece and a two-jointed palpus; the antennæ are two-jointed. 

 the apical joint small ; there are no spines at the base of the antennæ. 



