158 CHROMOSOMES IN THE SPERMATOGENESIS OK THE HEMIPTERA HETEROPTERA. 



Group and Species. 



MoLLUscA (continued). 



1. Gastropoda (continued). 



(Opisthobranchia. ) 



Apl j'sia punctata 



Aplysia depilans 



Haminea solitaria 



Phyllirhce 



Cymbulia peronii 



2. Pelecypoda. 



Mactra 



Ch^tognatha. 



Sagitta elegans | 



Sagitta bipunctata. . . . } ' 



GORDIACEA. 



Cycle. 



Authority. 



Gonium 



Pai'agordius varius. 

 Gordius 



AcANTOOCEPHALA. 



Ecliinorhy nchus gigas 



Nematoda. 



Ascaris m e g a 1 o c e p h a 1 a 

 bivaleus. 



Ascaris megalocephala uni- 

 valens 



Ascaris sp. (from Canis) 



Ascaris sp. (from Canis) 



Ascaris lumbricoides 



Ascaris clavata 



Spiroptera struraosa 



Filaroides mustelaram 



Ophiostomum mucronatum . 

 Strongylus tetracanthus 



Nemertini. 



Cerebratulus marginatus .... 

 Tetrastemma vermiculuui ... 



TUEBELLARIA. 



1. Polyeladidea. 



Prosthiostomum siphunculus 



Leptoplana treraellaris 



Oligocladus auritus 



Cj'cloporus papillosus 



Prostliecerjcus vittatus 



Thysanozoon bi'occhi 



Ov.Sp. 

 Ov. 



Sp. 

 Ov.Sp 



Ov. 



Ov. 



Eustylochus ellipticus 

 Planocera nebulosa 



2. lihabdocada. 



Mcsostouium ehrenbergi. 



Janssens and Elrington, 1004. 

 Bochenek, 1899. 

 Smallwood, 1904. 

 Boveri, 1890. 

 Nekrassoff, 1903. 



Kostanecki, 1904. 



Stevens, 1903, 1905c. 



Cytel 



18 



Ifi 

 16 

 16 

 Ifi 

 16 



16 



Cytell 



Tid. 



Montgomery, 19046. 

 Camerano, 1S99. 



Kaiser, 1893. 



Van Beneden, 1883; Hertwig, 

 1890; Boveri, 1887; Brauer, 

 1893. 



Carney, 18SG; Brauer, 1893; 

 Boveri, 1887. 



Lukjanow, 1889. 



Carnoy, 1886. 



Boveri, 1887. 



Carnoy, 1887. 



Carnoy, 1886. 



Meyer, 1895. 



Coe, 1899; Kostanecki, 1902. 

 Lebendiusky, 1897. 



Francotte, 1898. 

 " 1897. 



Francotte, 1897; Gerard, 1901; 



Klinckowstrom, 189(). 

 Schockaert, 1902; Van der 



Stricht, 1898. 

 Van Name, 1899. 

 Van Name, 1899. 



Bresslau, 1904. 



ca. 8 



4 

 2 



24,48 



18 



1 

 16 



24 

 8 

 8 

 6 

 6 



Ifi 

 4 



9 

 10 



10 



10 



16 



16 

 Ifi 

 16 



16 



1 

 8 

 4 



24 

 4 

 4 

 fi 



8 

 8 

 8 

 8 



9 

 10 

 10 



16 



16 

 16 



16 



24 

 2 

 4 

 6 



8 

 8 

 8 

 8 



9 

 10 

 10 



