24 ILLINOIS BIOLOGICAL MONOGRAPHS [24 



LECUDINA LEUCKARTI Mingazzini 



1860 No name Leuckart I860: 263 



1891 Lecudina Leuckarti Mingazzini 1891:469 



1893 Lecudina Leuckarti Mingazzini 1893: 51 



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



Intestine of Sagitta sp. 



LECUDINA APHRODITAE (Lankester) Kamm 



[Figure 125] 



1863 Monocystis aphroditae Lankester 1863: 90, 94 



1871 Unnamed Stuart 1871:498 



1899 Doliocystis aphroditae Labbe 1899: 33 



1903 Doliocystis aphroditae Minchin 1903: 176, 202, 326 



1909 Doliocystis aphroditae Brasil 1909: 120 



1922 Lecudina aphroditae Kamm 1922 (this paper) 



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 Ophioidina elongata Mingazzini 1891:471 



1893 Ophioidina elongata Mingazzini 1893: 53 



1899 Doliocystis elongata Labbe 1899: 33 



1903 Doliocystis elongata Minchin 1903: 327 



1908 Doliocystis elongata Brasil 1908:355 



1908 Doliocystis elongata Brasil 1908a: 425 



1909 Doliocystis elongata Brasil 1909: 112 



1922 Lecudina elongata Kamm 1922 (this paper) 



Sporonts solitary, elongate-cylindrical, attaining 500/i by 40/x. 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. 



