PLATE LVII. 



[Part Yl.— September 1887.] 



1. Africarion ater, G.-A. Travancore and Tinevclley Hills, S. India. View of 



right side, x 2-4. Shell removed. 

 1 a. Ditto : view of dorsal side, x 2*4. 

 1 h. Ditto : view of left side, position internally of the muscle-attachmeut of the 



retractor penis (m), x 2'4. 



1 c. Ditto : portion of sole of foot, x 2'4. 



2. 2 a. Shell, from above and below, x 24. 



2 b. Ditto : natural size. 



3. Africarion ater, var. aterrimus, natural size. 

 3«. Ditto: viewed from behind, X 24. 



'^h. Ditto : sole of foot, anterior portion, x 2-4. 



;3r. Ditto: jaw, x 12. 



4,4 a. Ditto: shell, X 4. Showing the membranaceous peristome (fi) . 



5. Ditto: generative organs of var. .\terrima, x 2-4. 



5 a. Ditto : male organ of ater, x 4. Showing the spermatophore in process of 



formation [s). 

 (). Africarion ater, var. cinereus, natural size. 



7. Shell of Africarion aurifokmis, Blf., x 2-4. Sispara Ghat, Nilgiri Hills. 



7 a. Ditto : natural size. 



