LIFE CYCLE OF HYDATINA SENTA 305 
TABLE 8 
Showing the number, and order of production, of male- and female-producers of 
Hydatina senta, in seven families, the early eggs of which were laid and hatched, 
and the young reared to maturity, in spring water, the later eggs laid and hatched, 
and the young reared in manure solution. Male-producers are designated by &, 
female-producers by @. 
fe 
° 
a LAID, HATCHED, AND REARED IN SPRING LAID, HATCHED, AND REARED IN MANURE 
=< WATER SOLUTION 
Z 
1 PIS) 12) OY) OY O12) (ONO) No) (2 OO) KS! Teh (2) (2) © 
2 ONT) 12) Git OS) 1S) ep 42) ONS) (0) OO GO) hope) (OP ON Ko} (9) 10) 19) (©) (Oh (1) ONO) 19) fe) 70) 
i) OAS) OP CY © (2,72) 8) ©) O) 8) OE 
3 12} IS} (0) GPhO> ©) (OE 10} ©) (CP (GN LON) OTS FON MONON 1) XO} 10} (0) 19," 19) (0) 8) ©) ODIO) 
GE ‘oA OM oPaci ie) HoMiey (cater roo} CMC! o/s ep to} Ho TRO Mron fesse oii) HO) 0) <2) 
5 2 OQ ©) © 2) ©) Erie O GS) © WN Moo) fe} () (0) te} (©) ©) © (9) © © CS) C) ©) BVO) @ 
CONCH CN) CC) 1) ©) © @ 0 © 1) OO) © © 
6 POV GH Oop!) WS) 19) N19) (2) Oh VC 
7 PQPPPAHAAHAAPASPPSPAAPAA SPSS LPSRLPASPRAVPSRLP LALLY 
Lo} 10} 19} (0) (9) 19) OG} 19) @) @ ) OC) O} (9) 
TABLE 9 
Showing the number, and order of production, of male- and female-producers of Hydat- 
ina senta, in seven families, all of which were reared to maturity in spring water. 
The parents are sisters of the parents in table 8. The vertical line divides each 
family at the point where, in the corresponding family in table 8, the female was trans- 
ferred to manure solution. Male-producers are designated by &, female-pro- 
ducers by @. 
NUMBER OF 
FAMILY 
Je SISAL OS OSS SOAS SOS OO ome odo Pict 
22 PVA? 
Zn POMP PPISLLQIPAAIP AA III SHI SISA AGS SLAG LE LY 
; | PPPQBQMPVEESEEQSLE 
3 POPP LPPPLPLPAHL LMG AMIS LR PPL IAPAHAHAHAA EAP PLY 
| 22 Eee 
4 OPP PPPASPASPAPAHAP PS VPPMPIAIPSPPSPPLPP PP LPLAGAAGA 
| PI AAARS CSS S 
ISM Mo sR Mo ero Motto op lowretictiotiot ot opomoslomosrop 
Ca PF ORO 2 Oia" OO PO icion Lichen eS 
OS SIN EN Giro CARON ON CMON Sul fo i} (0519) (0) Terie) (oh fousey se) 
j © 
“I o> Cr 
| 2999 
999999999999 
