LIST OF ILLUSTRATIONS. 
PLATES. 
A REVISION OF THE NortH AMERICAN TWO-WINGED FLIES OF THE FAMILY 
THEREVIDAE. 
By Frank R. Cole. 
Facing page. 
1-13. North American flies of the family Therevidae...........--.....-.+-.. se) 188 
A NEW FOSSIL TURTLE, KINOSTERNON ARIZONENSE, FROM ARIZONA. 
By Charles W. Gilmore. 
> Carapace of Kinosternon amzonense? 25 it yot!'ts ci be asl 1S Sea i A las So ees 
* Plastrontof-Kinosternon amconenses< 4-28 te esoet eth ee se Peeks ee eisaee 
 Carapace of Kanosternom anizonense 2222 3520. eon Sees ee Uakisene ee 
Se APIEStronl OLEKCOSLenNUl ONIZONCNBE n= casemate oe cee cree eae ro alsiele noieee 
S RlastromormAKanoslenivorvanizOlvrense rete ae nee ee eee ae clone oie cine wialeteiee 
Rone 
aomom oo 
1 
Two NEW LITHOTHAMNIEAE, CALCAREOUS ALGAE, FROM THE LOWER MIOCENE OF 
TRINIDAD, British West INDIES. 
By Marshall A. Howe. 
NC WE AERO UIRULTOLIENT PTIVUD scenery = EN ee ae a ok eal a etal egn alae sie oe sia as 
PM TO ROLDATIUNTLMN DEI T se a Seep mca arate (aeoie eel io wie, Says al atalaiataveloraye epee 
Se BA CTY TRIM YORE a OOO Sa open ee Ce eh Fee een. Wey mlerrie SSP Ie ete Te 
A TAT RO BRUM CRUNRECIUSO Set Fo katy SARE ec nas ae al AS Sd kee 
Paar ar art 
ON SIDERITE AND ASSOCIATED MINERALS FROM THE COLUMBIA RIVER BASALT AT 
SPOKANE, WASHINGTON. 
By Earl V. Shannon. 
eH anomure. cis Oolum iain; basalt. 2 a a eee oS Sc ape Ie See ye mein 20 
2. Cristobalite and siderite in cavities in basalt ................-...--2.--+--+-- 20 
3. Etyalite isiderite, and: ppethite in basalt faeces 9. =~ te fe cious 2 micinyaraye clase mia 20 
THE DERMANYSSID MITES OF NortH AMERICA. 
By H. E. Ewing. 
1-2:. Dermanyssid! mites of North Americas. 2. ASU MIO. 2b AGEs a. -e- eee 26 
TERTIARY FOSSIL PLANTS FROM THE Repustic or Hair. 
By Edward W. Berry. 
dt Tertiary fossil plants irom Hatti:....... 3-455... si seas Wash eens acewue 10 
