lv 
ARTICLE III.* A NEW NORTH AMERICAN OLIGOCHAETE OF THE 
GENUS HAPLOTAXIS. BY FRANK SMITH. (1 PLATE) OcToBER, 
1918 
TRMETOUUCET OM iy: bi epons clevstelavcisieiesnvedetetevercpetaee aie ig abe esas lanchatoas tet orb ioielatedsrercuenvaretevele 
Reproductive organs in Haplotaxis emissarius (Forbes)............ 
A new species from the Illinois River........5.....cscescscsccsncce 
ELantataers: fOVOESt ABD, TOV sats ote ele ieletsve\chavcloaTolate/Sis\ereialaje.s(o'c wipivisials/eforelota 
External characters 
Internal characters 
-General discussion 
Literature cited 
ARTICLE IV.* A REPRESENTATIVE OF THE GENUS TRICHO- 
DRILUS FROM ILLINOIS. BY JAMES E. KINDRED. Ocroser, 1918 
IntTodwetiony avin stersetctorctateaixia Se hatalibetapetatarcstarele mate. & pial itaee aca rel cate anaiiete 
Trichodrilus allobrogum Claparéde (?):— 
External characters 
Imternailh (CHapacters 2r)\25.4a;o/aaie avatn, ni rope (ve tee sulin te aie ore taerel sien: aval miavertis ateleters 
Trichodrilus allobrogum Claparéde 
Trichodrilus pragensis, VejdOvSky....... dec. cacedcccececusscervoecione 
Trichodrilus sanguineus (Bretscher) 
Literature cited 
ARTICLE V. CONTRIBUTIONS TO A KNOWLEDGE OF THE NAT- 
URAL ENEMIES OF PHYLLOPHAGA. BY JOHN J. DAVIS. 
(2 CHarts, 46 TeExtT-FIGURES, 13 PLates) Frsruary, 1919 
Introd weblion va cies iss teteyeley efe atan mohair onat win ia love ah outs sane areata’ et elore et cuedheca tara 
Ecological considerations 
Parasites of the larva:— 
The black digger-wasps (Tiphia spp.)....-......cceecececeececees 
THONG DUMCEULA? EUOD.< cise sieteteter aise siersiciere clelabe melon aioe keene acciaik oie 
Tiphia transversa Say 
Tiphia inornata Say 
Tiphia vulgaris Rob 
Enemies Of “Tipbiay es cits ects ete ot aie sohesoumye cere eieielere atele oat ate aiove eialentvere 
The banded digger-wasps (Elis spp.)...........cc ce cecceceecececee 
Elis 5-cincta Fabr 
i ce ee ee ee a er a a 
a ec ei ee ee ee ae] 
Elis interrupta Say 
Elis obscura Fabr 
a ee ee i ee ee aay 
Micropnthalma pruinosa COG... ...csccscccseccnvcccsccccecccvcsee 
Ptilodexia harpasa Walk. (tibialis Desv. of Coquillet and authors) 
*Articles III and IV are issued under one cover. 
PAGE 
43-48 
