120 INSECUTOR INSCITI^ MENSTRUUS 



but the fourth splits to another where it can be easily sepa- 

 rated on other features. 



It may appear that too many new genera are erected, six 

 being proposed. Of these, two species of Leria never had any 

 real right in that genus, the structure being so different that 

 both should have had new genera long ago. Again, two species 

 herein described could not fit in any known genus, and would 

 require new genera in any case. The last two are there merely 

 by the features of the classification. 



In the near future I hope to revise the North American 

 forms and would ask the loan of all specimens, however few, 

 for the purpose of examination. Any criticism of this paper 

 will be welcome. 



Proposed New Classification 



1. Foremost fronto-orbital bristle, longer, equal (or nearly so) to 



the hind fronto-orbital bristle 2 



Foremost fronto-orbital bristle from one-half to three-quarters 



the length of the hind one 4 



Foremost fronto-orbital bristle less than half the length of the 



hind one ; small, hairlike or absent. 7 



2. With prosternal bristles (male hypopygial claspers usually two 



long curved horns) Leria Loew 



No prosternal bristles 3 



3. Lower half of the oral margin with long silky hairs, longer than 



the vibrissae ; mid tibia with two preapical bristles ; costa with 

 a conspicuous bump over the auxiliary vein. .Barbasto ma Garrett 

 Lower half of oral margin with the usual short hairs; mid tibia 

 with only one preapical bristle^ Postleria Garrett 



4. With prosternal bristles (male hypopygial claspers two short 



irregularly oval horns) Amwhaleria Garrett 



Without prosternal bristles 5 



5. Mesopleura bare 6 



Mesopleura with a bristle or two Anorostoma Loew 



6. Mid tibia with very short preapical bristle ; a single very long 



apical spur, much longer than the preapical bristle, 



Thcphrochlamys Loew 

 Mid tibia with several longish apical spurs Morpholeria Garrett 



'^Anorastoma maculata Darlington may seem to fall here, in which 

 case it is readily separated by having a mesopleural bristle, wings 

 spotted, and very short vibrassse and arista. 



