22 Art. 4.— S. Goto and H. Kiknchi : 



Abbreviations used in the Explanation of Plates. 



apg Anterior prostate glands. 



br Brain. 



eg Caudal glands. 



dg Cephalic glands and their ducts. 



ej Ejaculatory duct. 



eo Excretory aperture. 



ex Excretory vessel. 



exv Excretory vesicle. 



go Genital opening. 



int Intestinal cœca. 



Im Longitudinal muscle of the caudal portion. 



m Mouth, 



me Glands of Mehlis. 



oe Œsopliagus. 



oot Ootype. 



ov Ovary. 



ph Pharynx. 



ppg Posterior prostate glands. 



ptg Post-testicular glands. 



rs Eeceptaculum seminis. 



sg Salivary glands. 



t Testis. 



vag Vaginal opening. 



vd Yas deferens. 



vt Vitellarium. 



Published March 81st, 1917. 



