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THREE NEW WHITEFISHES FROM BEAR LAKE, IDAHO AND UTaH. By John Otterbein Snyder. 
(Mocument Sos issied Mayiy, TOLO)pisarscta eee cnlc cata eitakrow ns feidet Wot svte oe Chee eee I-10 
FRESH-WATER MUSSELS AND MUSSEL INDUSTRIES OF THE UNITED StTaTES. By Robert E. 
Coker. (Document/865, issued October'25;, 1919) %..s0.c0sc0eccecccscescceed ede cese veces II-9g0 
LiFE HISTORY OF THE BLUE CRAB. By E. P. Churchill, Jr. (Document 870, issued November 
LT MLEHC Nene yarctel startet evel pencils are (oehel da.cve tee e cial nink ws Dave wisest aera sland oruseusisi ed weit Save elas APaee g1-128 
SPONGES oF BEAUFORT (N. C.) HARBOR AND VICINITY. By W. C. George and H. V. Wilson. 
(Document’876, issued December’ 29,2919). as sciseies cee: cis tis oe nee otsiecctrostssts welsiels sive settee. « 129-180 
DRAGONFLIES AND DAMSELFLIES IN RELATION TO PONDFISH CULTURE, WITH A LIST OF THOSE 
FOUND NEAR Fairport, lowa. By Charles Branch Wilson. (Document 882, issued August 
ER FES RON aN en Pheverete cisverv aye aGANeKs) sia) an ante uilekss aie nie, ayalse si dias wera leseiecainis Sidvalalurale ele Seesackie @ teacnele 181-264 
BURROWING MAYFLIES OF OUR LARGER LAKES AND STREAMS. By James G. Needham. (Docu- 
PUEDES pISSHe Cg el yz 175 EO 20) syey-sacaet are oye Teiccavarn a) of aintese ets ol aie <tesaters ch c\snieverelara ayate’tfereeivicieiscaie’s 265-292 
HABITS OF YELLOW PERCH IN WISCONSIN LAKES. By A. S. Pearse and Henrietta Achtenberg. 
(Mocument:88s5 asstied Angist 4,'1920:) 56.0 ces cee sleienes cesics lev vies te oe Md e ye senor ee 293-366 
MARINE ALGAE OF BEAuForRT, N. C., AND ADJACENT REGIONS. By W. D. Hoyt. (Document 
BEG eRe a! DECEMIDEN 305 LOZO) societies es nis cis twa. iaeiieaicieln sa shaerernveid sisce ea ine diice nn estas 367-556 
(GUS TAR, TSE op nod seen Gobo doe BC OCS DOU OREOrDD BCOODDnOUD OD CITC OU OACUOUnOT CHT 557-500 
