LIST OF ILLUSTRATIONS. 
FISHES OF STREAMS FLOWING INTO SAN FRANCISCO BAY: Facing page. 
Piste T; MapiotSanvMrancisco Bay and tributary streams: 2. os. ss. 25 -- ee ecee act ecemeccse cece 338 
GAS DISEASE IN FISHES: 
Plate I. (1) A dead king-fish with nie lesions. (2) Giil filament of a fish showing gas 
emboliinithedumina f-eesacscenec cas as cie Secs acme aa Sarn scone eine sere ease cian eae 376 
II. (1) Young puffers with gas disease inflation. (2) Rainbow trout fry showing dis- 
LentiomOhabGConemmyit hy PAGee nas soc 2 ore aw isis cic win wien. ote Saseriseeclaw omic se eemie econ 37 
TEES Livine Scup wath pOp-6V.G=ceecs cae -<--2 <1 a = sisieie ce sclaiais icicle Meisisels seteierais sleminie sewers 376 
A REVISION OF THE CAVE FISHES OF NORTH AMERICA: 
Plate I. (1-3) Tactile ridges of Amblyopsis speleus. (4,5) Head of Typhlichthys subterra- 
NGUSESH OMA oy CACTI WE SER aaa acta ceca eeiaisje Se ccke eis s Biers esis ieee cane ee eneaeee 394 
II. (1-3) Tactile ridges of Chologaster papilliferus. (4-6) Troglichthys rose .........- 394 
III. Heads of Chologaster agassizii, C. papilliferus, Typhlichthys subterraneus, Trog- 
lichthys rose, and Amblyopsis speleeus, showing eye...........--.-----eee--eeeeee 394 
Ve GE troglehthysiross. - (2) Chologaster papilliferus<=—..- - 22-22-22 seneeesenacne 394 
VY. (1) Typhlichthys subterraneus. (2) Chologaster agassizii ...............-.---.----- 394 
Wil=wAarib ly ODSISISP Clee US eras ieiccretne woes clare rac eee aa eines S are oi sislwaicscureis wich oie ore sacle incometemes 394 
LIFE HISTORY OF THE BLUE CRAB (CALLINECTES SAPIDUS): 
Plate I. (1) The cast shell of a half-grown male. (2) The ventral surface of a full-grown 
PETER LG Oye tee Fo tega ayaa ate tere eo losale ciate arte laverate bem icin Seinesis nace ewe gece oeeis cise dae oa See 414 
II. (3) Ventral surface of a virgin female. (4) Ventral surface of an ovigerous fe- 
LO ete atta ses ap cte ieinla 3 SAS SIS So cee era Sioia inte Mins wid ore ibaist i clalete Slesnis clei Seslo isis evict ale Rios ere 414 
Iil. (5-7) Three successive stages in the molting of one individual of Callinectes sapi- 
GUIS Seam reet cate siete ei earns spine. e Seema le eee eee tle onsen Sees ccindls ae dengarse 414 
TV. (8,9) Further stages in the molting of Callinectes sapidus................-....-+--- 414 
THE GERMAN CARP IN THE UNITED STATES: 
Plain Chmscalevcarp. | (2) Mirromcaip. (3) Meathericarprccas= saci cee one aei « eeesieciee ee 525 
Il. (1) Carp fishing. (2) Seining carp from ee (3) Seine boat and live-car. (4) Pre- 
PaniNS/ Carp fOr SMLOKTN LS <. narra Hse/</sc sine = se eercle aejaieis’s sie/aw ere Seimetsis e/neeisineecieismic 642 
III. (1) Dam and engine house ofa carp pond. (2) Outer side of dam, showing engine 
house and elevatorin operation. (8) Supplementary engine and eleyator. (4) 
Carp in pond coming up to inflowing stream of fresh water................------- 642 
TEXT CUTS. 
DISTRIBUTION OF SEWAGE IN NARRAGANSETT BAY: Page. 
MaproimNarriransett, bay ane a dijacCeMmh Watersecsen -cccicice oe seca cise ce semerss sise.d ce ee wcrc 199 
Map of Providence River and Narragansett Bay, showing location of leased oyster ground... 203 
A REVISION OF THE CAVE FISHES OF NORTH AMERICA: 
Alimentary canaomCholocaster COLmubusne can ct.ae sacieace wacom cccamceiseeiesje scacccclecaenecce esl 
AlimentanyicanalotCholorasterpapilliferus) <2. fc. ce cisec/sceices ose s = ceece wes celieincc ce ces 381 
Alimentary canal of Chologaster agassizii...............- TRUE SARE OOP One eUOUEE Spee ee Oe 381 
Mimentarncanawor hy phiichthys su bberram Cus. oa \ecieciees wi. ciclo c aciesaiae aa clsccjewee se eenee cae 381 
Alimentary canal of Typhlichthys subterraneus, showing gall sac.................-.--.----- 382 
Mimentaryicanahiol AmiblyOpsisispelsecus:.- ust -ecrs acca coe ec enicnie aes wis seis Saee\ae cvs oeseabeee 382 
Aim ecnitarycata ll omAm bly Opsisispelaeuseecesseens cnc nc csemee oss con nas cence erisweesie bona mem 382 
Internal anatomy of Amblyopsis speleus...........-.- Li Parola eC cteisig md is oO Nepaelareintae OSE Me eee 383 
Aimientary Gana lot Mroshic binys TOS = cee. cc cists = cecocelo ee selene nloeteiele reise nicia sraremmeichiots-orese 353 
Diagram indicating probable phylogeny of the Amblyopside..........-----.--.------------- 384 
(Orava Kayeqaus| renewero) AOU NU ETA ARG ae ae ee SN ee ne nS eee noc epee enore 386 
LIFE HISTORY OF THE BLUE CRAB (CALLINECTES SAPIDUS): 
Zoea form of Callinectes sapidus or some closely related crab...........-----0--2eee eee eee ee 407 
Megalops form of Callinectes sapidus or some closely related crab......-....---------++----- 408 
THE GERMAN CARP IN THE UNITED STATES: 
CARO OVID earn ae Se ane Se cin otal Sane * hafsteers Nata cie ciel Aare enaieie aici ae diwbcreSaic ed oeem ae aee 576 
MORIN SS [IN See cre tem ate oia ef pare cinta wre cle aicie aicrciniciniae Sole aa ooh ore nie « cileic sind Mals’s Doe ciclo see meeieieale 576 
Dine nAMMN Able pl Anko AaCAlp PON ie vis = sstae a omicie Saisie tees cen oe Biccca lene em oe cco nena oats seme 45 628 
Dis erm se CHA AE Ole nC ACMRD OM ec mes mcr ciccre ls cisitaomone ciate se sajsets on tien © cio are’s awincAae neue 629 
