216 [Sept£mi;er 



Cecidoniyia destructor Say=ifunesta Motch.=seealma Lw. — Scatopse atrata 

 Say==recurva Lw. — Scatopse notata Linn. — Aspistes borealis Lw. — Rh_vplius 

 fenestralis Scop. — R. punctatus Meig. ^marginatus Say. — Coenorayia ferru- 

 ginea Fabr.^pallida Say. — Sargus viridis Say=:frontalis Lw.. provided the 

 specimeu, communicated to me as European, really belonged to the Old 

 World.^Eristalis seneus Scop.^sincerus Harris. — Imatisma posticata Fabr.= 

 cimbiciformis Fall. — Syritta pipiens Linn. — Xylota pigra Fabr. = h£emato- 

 des Fabr. — Platychirus granditarsus Forst. — Braehyopa ferrugiuea Fall. — Sce- 

 nopinus fenestralis Linn. =pallipes Say. — Se. Isevifrons Meig. — Doliehopus 

 brevipennis Meig. — 'Dol. plumipes Scop. — Dol. discifer Staun. — Scellus spini- 

 manus Zett. — Psilopus pallens Wied.=:albonotatu3 Lw. — (Estrus bovis Fabr. — 

 Cephalomyia ovis Linn. — Gastrus equi Linn. — Melanophora roralis Linn.^ 

 Pollenia rudis Fabr. — Musca domestica Linn. — Cyrtoneura meditabunda Fabi*. 

 — C. stabulans Fall. — Mesenibrina resplendens. — Stomoxys calcitrans Linn. — 

 Anthomyia diaphaua Wied. — A. stygia Meig. — Aricia morioides Zett. — Ilyle- 

 myia angelicse Scop.— Hydrotaea dentipes — Hjdemyia urbana Meig. — Hi>ma- 

 lomyia canicularis Linn. — H. subpellucens Zett. — H. manicata — H. sealaris 

 Fabr.— Ilydrotsea armipes Fall.— Ophyra leucostoma "Wied. — Lispe uliginosa 

 Fall.— Scatophaga squalida ^ S. fureata Say? — S. stercorea Linn. — Cordylura 

 hircus. — Sapromyza lupulina Fabr. — Scyphella fiava Linn. — Lauxania cylin- 

 dricornis Fabr. — L. frontalis Lw. — Psila bicolor — Sciomyza nana Fall. — 3. ob- 

 tusa Fall.— S. albocostata Fall.— Dryomyza anilis Fall. — Blepharoptera iners 

 — Ortalis vibrans Linn. — 0. eana Lw.— Piophila casei Linn. — P. nigriceps 

 Meig. — P. petasionis R. Desv. — Heteroneura albimana — Borborus equinus FalL 

 — Drosophila ampelophila Lw. — D. transversa. — D. graminum. — Stegana nigra 

 Meig.^S. hypoleuca Meig. — Dichseta caudata Fall. — D. brevicauda Lw. — Sca- 

 tella quadrata Fall.— Sc. Stenhammari Zett.— Ochthera mantis DeG. — Ilythea 

 spilota Hal.— Melophagus ovinus Linn.— Olfersia ardeee Macq. — Hippobosca 

 equina Linn. 



Besides a great many other species, the occurrence of which on both conti- 

 nents is recorded with less certainty, the following European species are found 

 in Greenland, according to Stseger's trustworthy statements: — Diamesa Waltlii 

 Meig.— Ghironomus byssinus Meig.— C. aterrimus Meig. — C. picipes Meig. — 

 Triehocera maculipennis Meig. — Sciara flavipes Meig. — Galliphora erythro- 

 cephala Meig. — Phytomyza obscurella Fall. 



[Rhipidia maculata Meig. and Symplecta punctipennis Meig. may be also 

 added with certainty.— 0. Sacken. Also, according to Osten Sacken apud Say's 

 Works I. p. 24:3, Limnobia annulata Linn.=argu3 Say = imperialis Lw.— 

 B. D. TF.]— In all 94 species. 



DIPTERA.— Species believed to be of the same descent but distinguishable 

 from European species by a slight, but constant, difference of coloring. 



Subula pallipjs Lw. (N. A.) and S. marginata Meig. (Eur.)— Chrysotoxum 

 sp. indescr. and C. bicinctum Linn. — Tetanocera pictipes Lw. and T. umbra- 

 rum Linn.— T. saratogensis Fitch and T. pratorura Fall.— Hemerodromia va- 

 lida Lw. and H. Frigelii Zett. and a large number of others.— In all 5 species. 



