CHAPTER X. 



Tlie small number of Diptera collected were preserved in alcohol, 

 which renders specimens of this order more or less unfit for scientific pur- 

 poses. 



Furthermore, the specimens of this collection apparently have been 

 transferred from other bottles to those in which they were ultimately exam- 

 ined, because in many cases only fragments of insects were found, while at 

 the same time portions of the specimens which were wanting could not be 

 discovered in the vials received. Under the circumstances, all that can be 

 furnished is a meagre list of the few capable of identification. 



The only available specimen in the collection was a fine Lasia (family 

 A.croceridce), new to science, the description of which is as follows : 



LASIA KLETTII, nov. sp. 



Metallic green ; feet black. Long. corp. 17 millimeters.* Altogether 

 metallic green, with golden reflections ; upper side finely and evenly 

 punctured ; venter more bluish ; feet altogether brownish-black ; pi'oboscis 

 black, by one-half longer than the body ; antennae very short, black ; the 

 basis of the third joint slightly reddish ; this joint is more than twice as 

 long as the two first taken together, gradually tapering toward the tip. 

 Wings distinctly infuscated ; tegulse brownish, bordered with black. The 

 specimen having been preserved in alcohol, its metallic surface is entirely 

 deprived of pubescence ; some vestiges on the thorax prove that it was 

 clothed with short pale hairs. 



Camp Apache, Ariz., September, 1873. Collected by Francis Klett, to 

 whom this species is dedicated. 



OBSERVATION. I place this species provisionally in the genus Lasia, 

 to which it is related. It differs from Wiedemann's figure of Lasia in the 



"The measurement is taken lengthwise I liroti<;u the body, froui end to enil, without taking into 

 account its considerable {jiblMKity. 



805 



