HARDWICKE'S SCIENCE-GOSSIP. 



173 



corresponding areolet in the Syrphidse : in the 

 Myopa, this joining does not occur; aud the areolet 

 becomes like that of a Muscid. 



Eig. 96 is a drawing of the antenna of C. quadri- 

 fasciatm. Although it has such a curious shape, it 



second joint ; thirdly, a shorter, broader, and, 

 smoother third joint ; and lastly, a bristle, consisting 

 of three small joints, which are short and thick 

 in the Conops, but very slender in the other flies. 

 (Through a little error in the woodcut, the Sepe- 



Fig. 99. Mouth of Conops quadrifasciata, x 20diams. Ibr, labrum; /, lingua; la, labium; nut, maxillae; mp, maxillary palpi; 

 phph, pharynx; sd, salivary duct; o.its valve; ex, exsertor muscles of the mouth ; re re' , retractor muscle ; pm.pharyn. 

 geal muscle ; dm, depressor of the maxilla? or labrum ; el, elevator of the labrum ; tl, transverse muscles of the labrum. 



Fig. 100. Head of Myopa utra, x 40 diam. 



is really nothing more than a modification of the 

 type found in the Muscidae. This will be best 

 understood by comparing it with the antenna of 

 Sepedon sphegeus on page 105, in the May number 

 of this magazine ; and, at the same time it will 

 be well to compare that of Myopa (fig. 100). All 

 three of them will be seen to consist of :— firstly, 

 a short basal joint; secondly, a long and hirsute 



don's antenna seems to have but two joints in the 

 bristle : the second joint ought to have been divided 

 into two at a distance of -& inch from its base.) 

 The antennae of a Conops are broad, but very 

 thin. When viewed from above, they appear about 

 half as wide as they do sideways. 



Fig. 94 is an enlarged drawing of another species 

 of Conops, C. rufpes, which, not so frequent a* 



