59.4 (67.5) 
Article Il.—THE AQUATIC MOLLUSKS OF THE BELGIAN 
CONGO. WITH A GEOGRAPHICAL AND ECOLOGICAL 
ACCOUNT OF CONGO MALACOLOGY! 
By nee A. PILsBry? AND J. BEQUAERT® 
Wirn Frecp Norss py THE CouLectors, H. Lang anp J. P. CHAPIN 
Plates X to LX XVII, 15 Maps, and 93 Text Figures | 
CONTENTS 
PAGE 
INTRODUCTION... 60545 IL LLcleed i Beanie ase d ada Nene Nest van Gia aaiah ills, ap one a a One 72 
New Genera and Subgenera, with Their Type Species... ............4.-. 74 
New Species, Subspecies, and Mutations, with Their Seu Localities. . 74 
Additional List of Geographical Items Mentioned. . Aish 2a La amen ee iD 
Review of Bibliography..... PG Roe tate nean inet OAR a Nant acy eh daa ny Pe eee 85 
Sugeestions fo Woree rere y ss 20 is CS Ketel wine dope whe Dy wah 0 ate wens - 86 
Medical Importance of Fresh-water Mollusks..................6.0000+02. 87 
Systematic Account OF CONGO FRESH-WATER MOLLUSES..... . cccceceeecees 97 
Gastropoda ae ies 2d ke a at ee en ack AAs arctan ed, eae angola ake 97 
Key to Ethiopian Fresh-water Families...................000+000-. 98 
Pilmpng ta Basommat OG sore: she as ee he ee ek so ae 99 
PEER OT LL cE SMR tetra cis A Mesa 1 GRR Pn eRe ne aman Saree a ea grein fe 99 
Melampus Denys de Montfort.................... 99 
USaigacectsc Te!) ce aaen cree ety Mire Uae Ur meets dP ar gues ay Ann monee e 105 
ee Lamarck NU MOLL sidaiN Gat eae Se Od et ae roe ame 105 
Planorbide. . SOR a Sata eR OT MeN nm Mare SEE “I Tr LS 
Pianos ‘3 Sa etal ac (rit ici ay Pe ee ena 
Phaiotbis O. Bo Miller. sift s vrliceeat Gy eke eae ngs ae 
Segmentina igi Aaa ane Pere harsh PC es 
Plavorbula Tlaldeman 56 ce ee ee ee 131 
Bulinine..... SU Wisc hay er Me neoa? Oemaiea Maues a ar 2 Ted APN 132 
Biulinis to he Bee as ay ece ee eis eae eee 132 
a PP NSO PSUR IKTAUR Ba sie pico, 4s Lat ee Pe Rn eg 142 
y. iy ge ar ELS OR RR iy Ce fae LO hs WC RR hy emacs 147 
i Piysd WAVArMna ocak es a ye ee a 147 
Wirirerlacer 8 og clans siete oc, bids 5) 4.5 oo ac Rana Pe nerale 
Ferrissiing.......-. +... ea 2 oa) quate en ahem mee ear PROT 3°) 149 
Burnipin Walkeetics ... ca cima eran? v5. LOO 
Pepiedane VNR bag caseh iis ad cas ME ae Oe eg bee ee 
Scutibranchiata Rhipidoglossa.............. +e cece eee eee eens 156 
I 
Scientific Results of The American Museum of Natural History Congo Expedition. General 
Invertebrate Zoédlogy, No. 10. 
2The Academy of Natural Sciences of Philadelphia. 
’3Department of Tropical Medicine, Harvard University Medical School. 
69 
