X LIST OF ILLUSTRATIONS 



Keys to flies of the families Lonchaeidae, Pallopteridae, and Sap- 



ROMYZIDAE OF THE EASTERN UNITED StATES, WITH A LIST OF THE SPECIES OF 



THE District of Columbia region 



By J. R. Malloch and W. L. McAtee 



Facing page 



1 . Structural detals of Lonchaeidae and Sapromyzidae 26 



2. Hypopygia of Sapromyzidae 26 



Nematode parasites of the Brazilian land-tortoise, Testudo 

 denticulata 



By Edward A. Chapin 



1. Sauricola sauricola, new species 6 



2. Deletrocephalus variabilis, new species, and Angusticaecum brevispi- 



culum, new species 6 



A remarkable new genus and species of Mermithid worms from Jamaica 



By G. Steiner 



1-2. A new genus of Mermithid worms 4 



The magic, psychic, ancient Egyptian, Greek, and Roman medical col- 

 lections OF the division of medicine in the United States National 

 Museum 



By Charles Whitebread 



1. History of medicine exhibits. East Gallery 1 



2. Medical exhibits — magic medicine 2 



3. Medical exhibits — psychic medicine 16 



4. Exhibits of ancient Egyptian medicine 22 



5. Exhibits of Greek and Roman medicine 30 



Synopsis of the North American flies of the genus Scellus 



By Charles T. Greene 



1-3. North American Scellus 18 



Studies on the morphology, taxonomy and ecology of the larvae of 

 Holarctic tiger-beetles (Family Cicindelidae) 



By Clyde C. Hamilton 



1 . Lateral view of larvae of tiger-beetles 74 



2. Heads of various tiger-beetle larvae 75 



3. Labia, antennae, maxillae, and legs of tiger-beetle larvae 76 



4. Labra, thoraces, and abdomina of tiger-beetle larvae 77 



5. Pronota and setal plans of tiger-beetle larvae 78 



6. Pronota and setal plans of tiger-beetle larvae 79 



7. Pronota, setal plans, and abdominal segments of tiger-beetle larvae. _ 80 



8. Third abdominal segments and setal plans of tiger-beetle larvae 81 



9. Inner hooks of tiger-beetle larvae 82 



10. Pronta and setal plans of tiger-beetle larvae 83 



11. Third abdominal segments and setal plans of tiger-beetle larvae 84 



12. Collyris, species Eviarginatus dejean or bonellii Gu6rin 85 



