TROCHELimTTKBS (continued) 



Species 



Chromosome Number 

 _2a n 



fiemarftg 



Observer 



Reference 



A. intermedia 



A. priodonta 



Hydatina sent a 



Hydatlna senta 



2*J-s 



iii)26o(l) , As above 



13^(117, 



bisexual 

 egg 



lv)l3$(l,ll) 13 in 

 male meiosis $ soma 



i)2i|o_(l) 1 polar 

 parth. 1)007, no 

 5 egg. reduction 



11) 2^9(1) 2 polar 

 12o.(ll), bodies and 

 reduction 



Tauson 



parth. 

 £ egg 



12?(1) 



11 div. 

 lacking 



i)l6o_(l) Parth. Storch 

 £ egg(2n) »2U 



)8o_(ll) 



ii 



Parth. 

 S egg(n) 



i) 10-12© Ho polar Lenssen 



(l), parth. body '98 a.b 



% egg 



ii)5o_(l), 1 polar 



parth. body 

 $ egg 



111)120.(1), 2 polar 



winter egg bodies 



i)2''-259. 1 P° lar Whitney 



(1), parth. body '09 



5. egg 



11)11-135. 2 P ol " r 



(l) , parth. bodies 

 6 egg 



ill) 1^(1), As above 

 winter egg 



i)l2o.(l), Fertilized Shull 



parth. eggs pro- "21 



£ egg duce o_, 



ii)6c_(ll), unfertilized 



riarth. eggs £ 



6 egg 



-12- 



Bull. Inst. Biol. 

 Exp. 1; Zeit. 

 Wiss. Biol. 1; 

 Z.Z.M.A. i+. 



Z.Jb. (Anat.)^5. 



l.C. 1V.Z.A.21 



J.S.Z. 6. 



B.B. IH. 



