THE C.\JJADIAN ENTOMOLOGIST. 207 



Antennse and i)alpi black ; femora and tibia? not black at 



tip canariensts Bergr." 



4. Thoracic dorsum with two dark stripes bivitlata Becker.' 



Tiioracic dorsum with more than two dark stripes 5. 



5. Costal margin of wings with six large equidistant brown 



spots. . • • calopteia Mik.' 



Costal margin of wings with four spots 6. 



6. General colour yellowish brown ; jiroboscis unicolorous. .unicolor Hal.' 

 General colour light yellow; proboscis light yellow, witli a dark sub- 

 apical band bczzii, s]i. n. 



This key is based entirely on the published description of the species 

 hitherto proposed. Some oi these descriptions are very insufficient, for 

 example, those of athtntica Wollaston and unicolor Haliday. One, 

 maculipennii Curtis," is so brief and unsatisfactory that we have not 

 attempted to include it in the above key. The complete description reads 

 as follows : "Rather larger than G. unicolor, and is of a lurid ochre, the 

 wings tinged wiili ihe same colour. It may be merely a variety, differing 

 principally in colour, arising possibly from age. 



Whether or not Aporosa Macq (1838), in which Knderlein has placed 

 maculipennis Macq. {= caiiariaisis Berg.) and vicina Macq., is distinct 

 from Geranomyia is uncertain. The character of a radial cross-vein 

 should be sufficient to distinguish this group of species from the typical 

 Geranomyia group. Enderlein' states that vicina has but one marginal 

 cell; however, Macquart (Dipteres Exotiques, V, i, pt. i, p. 70), slates 

 clearly that there are two marginal cells. It is doubtful whether vicina 

 is a Geranomyia ; the statement of "rostre un peu alongc" being cjuite 

 insufficient to give it a position in the genus Geranomyia. 



Acknowledgements are made to Mr. Frederick Knab for his kindness 

 in supplying a reference not otherwise obtainable. 



The drawing of the wing was made by means of the projection 

 microscope in the Entomological Laboratory. 



2. Macquart — Dipleres Exotiques, Vol. I, pt. I, p.63 (z.s Aporosa ninculifiemiis j 

 (183S); chang-e.i to canarteiisis by Bergroth, Wiener Entomol. '/. iuing, V'ol. !S, 

 p. 118(1889). 



;,. Becker— Berlin Mitt. Zool. Mas., Vol. 4, p. 187 (1908). 



4 Mik — Verhandlungen Zool.-Bct. Gesell.si haft Witn., Vol. 14, p. 791 

 (1864), as maculipennis, n. sp. : changed to caloptera Mik, Verh. Zjoj.-Bof. 

 Geselischaft Wien., Vo'. 17, p 423 (1867). 



5. Halid IV— Entomol )8ical .Magazine, Vol. i, p. 155 ( 1S33) ; Curtis. Brit. 

 Entomol., Vol. i ?, p. 573 (excelkn coloured figure); Macquait, Suit. A BufTon, 

 Vol. 1. p. 65.' (1835). 



6. Curtis— Brit. Entomol., Vol. 12, p 573 (1835). 



7. Enderlein, G.— Zoologische Jahtbiicher, Vol. 32 pail 1 , p. 79, 80(1912). 



