1910] Melander — The Genus Tachydromia 61 



This species is related to acjens as is evident from the shortened 

 broad thorax with the humeri less pronounced than in typical Tachy- 

 dromias, the broad palpi, the widened front, subterminal arista, and 

 pruinosity of the body. However it is readily distinguishable by the 

 paler color of the legs, antennae, halteres and root of wing. 



Catalogue of the Described Species of Tachydromia.' 



1. aemula Loew, Zeitschr. Entom. Bresl. XVII. 22 (1863) Eur. C. 



*2. agens sp. nov Wash. 



3. aliterpicta Becker, Act. Soc. Fenn. XXVI. 32 (1900) Eur. S. C. 



alteropicta Becker, Bed. Ent. Ztschr. XXXIII. 343. (1899). 



*4. annulimana Meigen, Syst. Bes. III. 69 (1822) , . .Eur. 



albitarsis Zetterstedt, Dipt. Sc. 1. 313 (1842). 

 arrogans Linnaeus, Zetterstedt, Ins. Lapp. 546. var. d. (1838). 

 cimicoides Fabricius, Walker, Ins. Brit. I. 140 (1851). 

 umbrarum Haliday, Ent. Mag. I. 161 (1833). 



*5. arrogans Linnaeus, Fauna Suec. 1857 (1761) Eur. 



bifasciata Rossi, Fauna Etr. Mant. II. 77 (1794). 

 cimicoides Fabricius, Spec. Ins. II. 447 (1781). 



6. brevipennis v. Roser, Wuerttemb. Corresp. 1. 53 (1840) Eur. C. 



? microptera Loew, Ztschr. Ent. Bresl. XVII. 26 (1863). 



*7. calcanea Meigen, Syst. Bes. VII. 95 (1838) Eur. C. 



longipennis Loew, Ztschr. Ent. Bresl. XVII. 29 (1863). 



*8. calva sp. nov Georgia. 



9. catalonica Strobl, Mem. R. Soc. Esp. III. 319 (1906) Eur. S. 



var. striatipennis, Strobl. 1. c. 320. 



*10. ciliata sp. nov Mex. 



*11. connexa Meigen, Syst. Bes. III. 70 (1838) Eur. 



cimicoides Fabricius, Meigen, p. p. Klass. I. 239 (1804). 

 morio Zetterstedt, Ins. Lapp. 546 (1838). 



12. dichroa Bezzi, Jenaische Denkschr. XIII. 183 (1908) Afr. S. 



*13. enecator Melander, Trans. Am. Ent. Soc. XXVIII. 226 (1902) 



Alask., Wyom., Quebec. 



14. excisa Loew, Zeitschr. Ent. Bresl. XVII. 27 (1863) Eur. C. 



15. incompleta Becker, Act. Soc. Fenn. XXVI. 33 (1901) Siberia. 



*16. insularis sp. nov Grenada. 



*17. interrupta Loew, Zeits. Ent. Bresl. XVII. 19 (1863) Eur. S. 



*18. maculipennis Walker, List. Dipt. Ins. III. 507 (1849) N. Am. 



pusilla Loew, Cent. V. 74 (1864). 



bimaculata Loew, Melander, Trans. Am. Ent. Soc. XXVIII. 204. 



19. minima Becker, Act. Soc. Fenn. XXVI. 32 (1901) Siberia. 



20. nwnserratensis Strobl, Mem. Soc. Esp. III. 318 (1906) Eur. S. 



21. ? morio (Zetterstedt) Walker, Ins. Brit. I. 141 (1851) England. 



1 Those species figured on the plate are marked with an asterisk. 



