1904] 



A DA MS : — SIPHONELL A . 



103 



ON THE NORTH AMERICAN SPECIES OF SIPHONELLA. 



BY C. F. ADAMS, CHICAGO, ILL. 



Baron Osten-Sacken in his Catalogue listed five species in this genus, plac- 

 ing phi7nbella Wied. therein on the authority of Loew. After a study of type 

 material Mr. Coquillett has removed obesa Fitch, placing it as a synonym of Chlorops 

 ass'miUis Macq. In material which I have studied I have recognized two European 

 species and three new ones. Several specimens of S. laevigata Fall, were collected 

 by Dr. Hough at New Bedford, Mass., and one specimen of S. trilineata Meig. 

 comes from Colorado. The species appearing under the name nigrirostra comes 

 from Grenada, W. I., and is one of several Diptera worked out by Dr. Williston and 

 myself for the British Museum. The manuscript is not yet published, but the spe- 

 cies is sufficiently characterized, for the present paper, in the following table : — 



Table to the Species.^ 



1. Thorax vittate .... 

 Thorax not vittate 



2. Antennae wholly yellow 

 Antennae at least with tip infuscated 



3. Halteres brownish black 

 Halteres yellow .... 



4. Mesonotum with three lines . 

 Mesonotum with five lines 



5. The mesonotal lines consist of shallow sulci 

 The mesonotal lines consist of brown colored 



6. Thorax pollinose . 

 Thorax shining 



7. Antennae largely black 

 Antennae largely yellow 



8. Face yellow .... 

 Face black .... 



9. Anterior and middle tibiae largely black 

 Anterior and middle tibiae yellow . 



vittae 



2 

 6 



. plumbella Wied 



3 



. reticulata Loew 



4 



5 



quinquelineata n. sp 



parva n. sp 



. trilineata Meig 



7 



8 



latifrons Loew 



cinerea Loew 



inquilina Coq 



laevigata Fall 

 nigrirostra Adams 



• After this paper had gone to press I noticed that Dr. J. B. Smithjin his " Insects of New Jersey," page 696, has 

 T&pori&a Siphonellaptunilionis Bjerk. from Riverton, N. J. After examining specimens of this species I find that it 

 will stand next to guingtielineata in the table, and will be known from it by having the thorax yellow, marked with black 

 vittae, instead of black, marked with brown vittae. 



