LIST OF ILLUSTRATIONS XHI 



A re:\'I8Ion of the American lice of the genus PEa»icuLtrs, together 



WITH A CONSIDEBATION OF THE SIGNIFICANCE OF THEIR GFXKJBAPHICAL AND 

 HOST DISTRIBUTION 



By H. E. Ewiug 



Facing page 



1. Pedieuli from monkeys 30 



2. Pediculi from a monkey and from negroes 30 



0. Pediculi from man 30 



New genera and spec^ies of Acalyptrate flies in the TIniteh) States 



National MUvSEUm 



P.y J. R. Malloch 



1. Details of Sapromyzidae and Drosophilidae 36 



2. Details of Sapromyzidae. Drosophilidae. and Agromyzidae 36 



North American two-winged flies of the genus Cylindromyia Meiqen 



(Ocyptera of authors) 



By .T. M. Aldrich 

 1. Details of Cylindromyia Meigen 28 



A collection of Pleistocene vertebrates from southwestern Texas 



By Oliver P. Hay 



1. Olyptodon petalifenis. 2. Neochoerus pinckneyi 18 



2. Anancus orarius. 2. ChUtmythcrium septcntrionale. 3. Glyptodon 



pefaUferus 18 



8. Teeth of Ananciis 18 



4. Teeth of Anancus orariun 18 



o. Teeth and jaws of Anancus orarius 18 



6. 1, Anancus orarius. 2. Neochoerus pincl-ncyi 18 



7. Tooth of Anancus defloccatns 18 



8. 1. Anancus defloccatus. 2. Neochoerus pinckneyi 18 



TEXT FIGURES 



Tertiary insects from Argentina 



By T. D A. Cockerel! 



Page. 

 J. Mohinna derosa, interior wing 2 



Descriptions of new internal parAvSITes 



By Edward A. Chapin 



1-2. Contracarcum ttof/idum. 1, front view of head. 2, caudal extrem- 

 ity of male 2 



3-4. 3. Contracaecum turgidnm. Anterior portion of digestive tract, show- 

 ing esophageal and intestinal api>endages. 4, Contracaecum inag- 

 nipapillafum. Caudal extremity of male 3 



