24 ILUNOIS BIOLOGICAL MONOGRAPHS [24 



LECUDINA LEUCKARTI Mingazzini 



1860 No name Leuckart 1860: 263 



1891 Lecudina Leuckarti Mingazzini 1891:469 



1893 Lecudina Leuckarti Mingazzini 1893: 51 



Similar to the typt species, the anterior end not constricted bottle-like. 

 Intestine of Sagitta sp. 



LECUDINA APHRODITAE (Lankester) Kamm 



One-half inch in length. "This is the only unilocular form of Gre- 

 garina which at present has been found provided with a proboscis." 

 Lankester. 



Intestine of Aphrodite aculeata. 



LECUDINA ELONGATA (Mingazzini) Kamm 

 [Figures 134 and 135] 

 1891 Ophicidina elongate 

 1893 Ophicidina elongate 

 1899 Doliocystis elongaia 

 1903 Doliocystis elongata 

 1908 Doliocystis elongata 



1908 Doliocystis elongata 



1909 Doliocystis elongata 

 1922 Lecudina elongata 



Sporonts solitary, elongate-cylindrical, attaining 500/i by 40/*- Pro- 

 toplasm of anterior end highly specialized from that of remainder. Nu- 

 cleus large, spherical, with several karyosomes. 



An intracellular stage was encountered by Brasil, who thinks it may be 

 schizogonic in character. It is possible, however, that it may have been a 

 portion of the life-history of another parasite. 



Mingazzini describes the epimerite as a "piccolo bottone sferico"; 

 Brasil finds a long thread-like filament which penetrates to the base of the 

 cell, which is certainly atypical. 



Intestine of Lumbriconercis impatiens Claparede. 



Taken at Naples. 



