I 



I 



ri.ATE cxx. 



[Part Xl.—Ma)r/> IPIO.] 



Macrik Hi.AMvs vKsicA, 11. s)). Aiuuklial, Cacliar. 



Fij:. I. Head witli iiiautlc zoiic from left side, sliowiiig left slicll-loho, kc, x 1""j. 



1 «. (Jenitalia, x -iu. 



16. Ditto of another spccitncii, x 1'."). 



1 r. Jaw, X .'30. 



M AC itociii.AMvs viisicA var. ()(ii.i:i. Diyuiig Valley, Singplio Hills. 



Fig. 2. Genitalia, x 4-5. 



'2a. The kale-sae, with spermatophore forming in, X 1-. 

 '2 I). Ixadnla, some of the adraediaii and lateral teetli. 



^rACRociiLA.MVs poLiTui.A, (.i.-A. Singplio Hills. 



rig. 3. ^1 antic-margin from the front, showing right shell-lolie and dor.sal lohes, x -1'5. 



3 rt. Ditto, iihowing left shell-lohc and left dorsal lobes, x 1'."). 



;> 6. Genitalia, part of, x 8. 



3 c. Jaw, X 21. 



'id. Teeth of the radnla at different parts of the row, mucii enlarged. 



