1 
I CURE 
Plate 39. 
1. Lcda conceptionis Dali. 
Bull. U. S. N. M. 
2. Lithophaga aristata Dillwyn. 
San Diego. 
3. Chione fluctifragra Sowerby. 
San Pedro. 
4. Lcda penderi Dali.. 
Memoir 14, N. Dept, of Mines, Canada. 
5. Lcda penderi Dali... 
Memoir 14, N. Dept, of Mines, Canada. 
6. Tindaria mexicana Dali. 
Bull. Mus. Comp. Zool. 43. 
7. Tindaria mexicana Dali. 
Bull. Mus. Comp. Zool. 43. 
8. Vencrupis laniellifera Conrad. 
San Pedro deep water. 
9. Modiolaria nigra Gray. 
Point Barrow, Arctic. 
10. Lithophaga attenuata Deshayes. 
Lower California. 
11. Yoldia rnartyria Dali. 
Bull. No. 2, Nat. Hist. Soc., British Columbia. 
12. Poromya tenuiconcha Dali.. 
Proc. U. S. N. M., vol. 45. 
Page 
. 21 
73 
153 
17 
17 
40 
40 
160 
. 74 
73 
29 
* 
i 
95 
