02 STRA.TIOMTIDJE. 



forming an apical style, with or without a minute terminal bristle 

 (fig. 2). Thorax subquadrate or oblong; scutellum with two 

 spines. Abdomen 5-segmented in d , 6- or 7-segmented in $ , 

 normally barely broader, sometimes much broader than thorax, 

 generally nearly bare ; genitalia small. Leys simple. Wings of 

 normal Stratiomyid type; anterior veins crowded together; 1st 

 and 2nd veins almost anastomosed, rather short, 3rd vein normally 

 forked, both branches ending far before wing-tip ; 4th vein with 

 three endings, of which one or more may be incomplete or absent ; 

 posterior cross-vein present ; squamae distinct, thoracic pair 

 pubescent. 



Range. World-wide. 



Life-history. One or two European species have, been bred, and 

 0. cyanea at Pusa. Larva much as in Stratiomyia, but without 

 spine- shaped protuberance. The imagines occur in moist situa- 

 tions, with a partiality for settling on Umbelliferse. 



Table of Species. 



1. Shining metallic-blue species (with a general 



resemblance to the Muscid, Chrysomyia 



du.v) cyanea, sp. n., p. 03. 



Never metallic ; always yellow or brownish, 

 with markings 2. 



2. Abdomen as well as thorax conspicuously [p. 64. 



pubescent rufoabdominalis, Jjrun., 



Abdomen practically bare, normal ; thorax 

 generally considerably pubescent 3. 



3. Thorax with sharply defined spaces of shin- 



ing black and reddish brown, and a short 

 golden tomentose stripe from anterior 

 margin ; a conspicuous and rather ab- [p. 65. 



normal species. pulcherrima, sp. n., 



Thorax dark, with yellowish or grey pubes- 

 cence ; species of normal appearance .... 4. 



4. Some of the femora Avith distinct broad black 



bands 5. 



No distinct femoral bands, legs generally 

 wholly pale 6. 



5. All femora with broad black median band ; 



hind tibiae with broad apical band minuta, F., p. 65. 



Hind femora not banded rubrithorax, Macq., 



6. (a) Abdomen wholly orange ; postocular [p. 07. 



orbits in $ moderately broad lutatius, Walk., p. 70. 



(/;) Abdomen with distinct dark transverse 

 bands; postocular orbits in $ mode- 

 rately broad transversa, sp. m, p. 71 . 



(c) Abdomen with dorsal row of spots, more 



or less forming a median stripe .... 7. 



7. Frons in $ black ; facial bump small, 



blackish ; postocular orbits in $> mode- [p. 07. 



rately broad hashmirensis, sp. n., 



