ORDER SIPHONAPTERA. 1 15 



The tiger-beetle* oot only run with agility, but bave a light, swift 



Fig. 181. Pla 

 tynus cupri- 

 penne. 



Fio. 182. Calosoma 

 calidum, Natural 



Fig Cu idel ■ : irti- 



collis. Larva "t an tin- 

 know n - 



Bight. Their larva bore into sand, propping themselves up in their 

 li« ilcs by two dorsal booked projections <>n the nintb segment, 

 tain South American forms climb tree- like ants, which they n 

 ble. Oidnd ga/ria Say, C. hirU Say. 



ORDEB XIII. SIPHONAPTERA [Apluiin 



Although the fleas resemble flies in their larval stage and 

 in the mode of development of the embryo, yet the adults 

 are now thought to present such a combination of charac- 

 ters as to throw them out of the great order of Diptera, 

 where they have been allowed to remain by many auth 



mi n i i.D Works. 



Guyon, M 



lyon. M. Bistoire naturelle el medicalede la Chique {Rhyne) 

 penetrans). (Rev. el Mag. de Zool., 1865 68 Paris.) 

 Karsten, H. Beitrag zur Kenntniss des Rbyncboprion penetrans 

 L864. " 



Kraopelin. K. Ueber die systematische Stelluue der Puliciden (Ham- 

 burg, 1884 



us. L. Anatomic des Hundeflohes /' D sden, 



B66.) 

 Packard, A. s. Developmenl of /' Mem P \--ad 



Salem, 1872). Aiso the w ritings of \V< ismann and Balbiaui. 

 Taschenberg, 0. Die Flohe (Halle, 1880). 



t Although we bave held the vie* of Haliday ai 

 that the fleas have affinities to the dipterous familv Mvcetophi 

 yet, in deference to the researches ol Kraepelin mid ti on of 



Brauer, we refer them to a separate order; the i en 



ologj and transformations tleas closely resemb Myt 



phila, Simulium, Chironomus. etc. 



