24 IJune, 18S0. 



CC. Hind tibiae of males slightlj curved, foi-e tibiae ciliated. 

 Sp. 2 — HORTORTJM, Fallen. 

 BB. Middle tibife of males with a bristly tubercle at the base. 

 Sp. 3 — PODAGRICA, Loew. 

 AA. Hind metatarsi of males with a thick beard in addition to the cushion, and 

 with hind tibiae much curved. 



Sp. 4 — CURTIPES, Miicquart. 



1. SIMPLEX, Lw. (^ $. Ccjerulo-chaJyhea nitida ; thorax antice 

 vittis trihiis latis albidis ; abdomen tesselUs alhidis, linea dorsali, macu- 

 lisque indeterminafis nigricantihus ; ^ oculis sub-coherenfihus, tibiis 

 posticis subrecfis, infits medio Jonc/e cUiatis ; tibiis anticis intus nudis ; 

 aluJoe, sqriamis inferioribus infumatis ; alee Ivjnlince, venis longitudinali- 

 bus tertiis, basi setulosis ( J* $ ) ; ? oculis quartario capitis separatis ; 

 pedibiis simplicibus ; alulis albidis. Long. 2\ — 3| lin. 



Stn. — Muscn hortorum ?, Me'gen, System. Besch., v, 73. Curto- 

 neura liortorum ?, Macq., Dipteres dii iiord de la France, 148, and Ins. 

 Dipt., ii, 276. Cyrtoneura hortorwm, Kondani, Dipt. ItaL, v, 213. C. 

 simplex, Loew, Wiener entom. Monatschr., i, 45 ; Scliiner, Fauna 

 Austr., i, 596. Morellia hortorum, R. Desv., Dipt, des environs des 

 Paris, ii, 636 ; Haliday, Entom. Mag., iv, 149. M. importuna, Haliday, 

 Ann. of Nat. Hist., ii, 185. 



Colour dark glossy black-blue : head black ; S , eyes separated by a narrow 

 black space contracted in the middle, where the eyes are almost contiguous. ? , eyes 

 separated by a space measuring one-fourth of the width of the head ; J ? , sides of 

 face glistening silvery- white, with black reflections ; antennae not quite reaching 

 epistome, third joint twice the length of second, of a grey colour ; arista thinly 

 furnished with long hairs, which leave the apex bare for some length ; palpi black, 

 epistome slightly prominent, setigerous ; facial groove bordered with bristles ; 

 cheeks clothed with short black hairs : thorax with three longitudinal, broad, glisten- 

 ing white stripes, most distinct on the front margin ; the lateral stripes irregular in 

 shape, and only extending backwards as far as the base of the wings ; between the 

 white stripes are two indistinct black ones on each side : abdomen of a glistening 

 greyish-blue colour, sometimes with a glaucous tinge ; it has a longitudinal black 

 dorsal stripe, and is tessellated with black and white spots or rather reflections, 

 which show differently when viewed in different aspects : legs with fore femora 

 clothed in <J with soft short hairs along their outer sides, and ciliated in <? $ , be- 

 neath with long stiff bristles of nearly equal length, placed at equal distances from 

 each other like the teeth of a comb ; foi'e tibiae naked on their inner sides, and 

 having only a row of short even hairs on their outer and under surfaces ; middle 

 femora with a few long stiff bristles on their upper sides near the tip, and with 

 some long hairs on the under sui-faces near the base ; middle tibiae evenly ciliated 

 along their outer sides with a row of very short hairs ; hind femora clothed along 

 their exterior and under surfaces with long hairs, something similar to those under 



