CHROMOSOMES IN THE SPERMATOGENESIS OF THE HEMIPTERA HETEROPTERA. 157 



Group and Species. 



Cycle. 



Crustacea (continued). 



2. Copepoda (continued). 



Heterocope robusta 



Diaptomus gracilis | " 



Diaptomus Ov.Sp. 



.3. Isopoda. 



Oniscus asellus Sp. 



4. Ostraeoda. 



Cypris reptans Ov. 



5. Decapoda. 



Astacus. ! Sp. 



Brachiopoda. 



Lingula anatiua Ov. 



Endoprocta. 



Pedicelliua americana Ov.Sp. 



ECHINODEEMATA. 



Strongj'loeentrotus Ov. 



Echinus esculentus ^ " 



Echiuus mici'otuberculatus... " 



Toxopneustes 



Peosopygii. 



Phascalosoma Ov. 



Annelida. 



Thalassema mellita 



Myzostoma glabrum 



Allolobophora fcptida 



Ilyodrilus coccineus 



Rhynchelmis 



Ophryotrocha puerilis 



Lumbricus Sp. 



Chffitopterus pergamentaceua Ov. 



Tomopteris 



MOLLUSCA. 



1 . Gastropoda. 



Enteroxenos ostergreni 



( Prosobranchia. ) 



Crepidula plana 



Paludina vivipara Sp. 



Pterotrachea j Ov. 



Carinaria " 



(Pulmonata.) \ 



Helix pomatia Sp. 



Helix pomatia j " 



Helix pomatia " 



Limax maximus Ov. 



Limax cinereo-niger Sp. 



Limnjea elodes Ov. 



Authority. 



Ishikawa, 1891. 



Nichols, 1902. 



Woltereck, 1890. 



Prowazek, 1902. 



Yatsu, 1902. 



Dublin, 1905. 



Stevens, 1902. 

 Bryce, 1903. 



Boveri, 190.5. 



Wilson, 1900. 



Gerould, 1903. 



Griffin, 1900. 



Wheeler, 1897. 



Foot, 1898. 



Vejdovsky and Mrazek, 1903. 



it ti 



Korschelt, 1895. 

 Calkins, 1895. 

 Mead, 1898. 

 W. Wallace, 1904. 



Bonnevie, 1905. 



Conklin, 1902. 

 Meves, 1902. 

 Boveri, 1890. 



(I u 



Ancel, 1903. 



Prowazek, 19016; v. Rath, 1896. 



Lee. 1897. 



Linville, 1900. 



Vom Rath, 1892. 



Linville, 1900. 



Gonium 



ca. 22 



36 



18 

 36 



24 

 22 



4 

 32 



34 



14 



48 

 24 

 24 



16 



Cytel 



16 

 16 



16 



12 



58 



8 



11 



18 



16 



9 



18 

 18 



10 



12 



12 



11 



16 



32 



4 



16 



9 



4 



17 



30 



7 

 16 

 16 



24 

 12 

 24 

 ?16 

 32 

 16 



Cyte II 



8 

 16 



11 



18 



16 



9 



18 

 18 



10 



12 

 12 

 11 



2 



16 



9 



17 



30 



7 



16 



16 



24 

 12 

 24 



16 

 16 



Tid. 



4 

 16 



11 



18 



16 



9 



18 

 18 



12 

 12 

 11 



2 



16 



9 



17 



30 



7 



16 



16 



24 

 12 

 24 



