12 Platypezidae. 



wards (the iise of this bristle is not known, but Verrall is of opinion 

 that it can be laid on to the small knob a little from the tip below 

 middle femora). Claws and pulvilli small and empodium quite small. 

 Wings with alula small and axillary lobe well developed, both with 

 long hairs; subcostal vein with short and distant, but somewhat 

 strong bristles in the apical two thirds; medial cross-vein retracted 

 towards base, but first basal cell longer than second; anal cell some- 

 what long; discai vein unforked and posterior cross-vein steep and 

 placed near margin; anal vein reaching the margin; axillary vein 

 small and weak. Squamulæ quite small. 



Fig. 3. Wing of C. amoena (^ . 



The larva of C. amoena is known; it is mentioned by Schnabl 

 (Pametnic fizyjogr. I, 377) who bred the species from fungi on Alnus. 

 De Meijere found it in July in fungi on a down lying tree-stem 

 (Tijdschr. v. Entom. XLIII, 1901, 224) and describes it thoroughly. 

 I have myself examined a larva found in a Corticium in Hareskov 

 in September (O. Rostrup), but as it was not bred I cannot say 

 whether it belongs to amoena or speciosa. It is, however, quite agreeing 

 with de Meijere's description. The larva is oval, rather flat, especially 

 on dorsal side, which is somewhat chitinised, and it is sharply mar- 

 gined laterally; the colour is yellowish; above nine segments are 

 visible, and all round the margin there is a number of thread-like 

 filaments, tapering outwards and serrated or feathery in the basal 

 half. At anterior apex, but below the margin on the ventral side are 

 prothorax and head ; at the front margin of prothorax are the anterior 

 spiracles as two conical warts, and above the moutli opening two 

 pairs of very small papillæ, the maxillary palpi below and above 

 them the antennæ. In the mouth opening are two hooks which have 

 a. number of teeth apically below (these I have not examined). On 

 the ventral side the segmentation is almost not visible. The number 

 of the lateral filaments is on each side four on the first and second 



