ORDER DIPTERA. 117 



An English observer has seen fleas sucking the blood of caterpillars. 

 Mr. L. O. Howard states that a species of flea, possibly Pulex gallium 



FIG. 135. Jigger-flea, o, female distended with eggs. 



Bouche, kills chickens in Florida, puncturing especially the heads of 

 very young, downy individuals. 



ORDER XIV. DIPTERA* (Flies). 

 Any species of this order may be at once recognized by 



* SELECTED WORKS. 



Becher, E. Zur Kenntniss der Mundtheile der Dipteren (Denk. Akad. 



d. Wisseus. Wien, Bd. xlv., 1882). 

 Brauer, F. Monographic des Oestriden (Wien, 1863). 

 Systematische Studieu auf Gnmdlage der Dipteren-larven, etc. 



(Akad. d. Wissens. Wien, Bd. xlvii., 1883). (Figs, and descriptions 



of dipterous larvae, and list of all works and articles referring to 



the metamorphoses of Diptera.) 



Dimmock, G. The anatomy of the mouth-parts and -of the sucking ap- 

 paratus of some Diptera (Boston, 1881). 

 Loew, H., and Osten Sacken, C. R von. Monograph of the Diptera of North 



America, 1862-73 (Smithsonian lust.). Also other essay sand papers. 

 Hammond, Arthur. On the thorax of the Blow-fly (Musca wmitoria). 



(Linn. Soc. Journ. Zoology, vol. xv.,1879.) 

 Hansen, H. J. Fabrica oris Dipterorum (Copenhagen, 1883). 

 Kraepelin, K. Zur Anatomie und Physiologic des Russels von Musca 



(Zeits f. Wissen Zool., xxxix., 683, 1883) 

 McCloskie, G. Kraepeliu's Proboscis of Musca (Am. Nat., xviii., p 



1234, 1884). 

 Lowne, B. F. The anatomy and physiology of the Blow fly, Musca 



vomitoria (London, 1870). 

 Macquart, J. Dipteres exotiques nouveaux on peu counus (2 vols. en 



5 parties, et 5 supplements. Paris, 1838-55). 

 Meigen, F. W. Systematische Beschreibung der bekanuten europai- 



schen zweittugeligeu Insekten (7 vols. Aachen and Hamm 



1818-35). 

 Meinert, F. Trophi Dipterorum (Copenhagen, 1881). (In Danish, 



with abstract in Latin.) 

 - Sur les larves eucephales des Dipteres (Copenhagen, 1886). (In 



Danish, with French resume.) 



(.Continued on next page.) 



