512 axel a. olsson 



Explanation of Plate 39 



Figure Page 



1-la. Lophocardium cnmingii (Broderip) 255 



Inside and outside of the same specimen. Length 33.2 mm. 

 Panama Bay, Panama, shrimpers. Coll. Harry Johnson. 



2-2b. lophocardium annettae (Dall) 255 



Figs. 2, 2a, length 29 mm.; Fig. 2 copied after Dall, fig. 2a, photo- 

 graph of same specimen. Lower California near Cerros Island.; 

 Fig. 2b, copied after Hertlein and Strong, 1947. Length 26.5 mm. 

 Santa Inez, Lower California. 



3. >Ilcrocardinm pazianum (Dall) 254 



Length 8.6 mm. Esmeraldas, Ecuador. 



4. Microcardium panamensis Dall 254 



Length 13.5 mm. Panama Bay, U. S. S. Albatross, sta. 3355, 182 mm. 

 Holotype, USNM 122928. 



5-5a. Laevicardium clarionense (Hertlein and Strong) 257 



Height of shell 20 mm. Palo Seco, Panama Canal Zone. Coll. Mr. 

 Stewart Jadis. 



6. Cardita (Cardita) spurca beebei Hertlein 186 



Length 30 mm. Panama. Coll. Mr. Stewart Jadis. Pill 25685. 



7. Strigilla (Simplistrigilla) strata, new species 390 



Length 7.2 mm. Punta Blanca, Ecuador. Holotype, ANSP 218958. 



8-8b. Strig-illa (Pisostrigilla) panamensis, new species 390 



Figs. 8, 8a, inside and outside views, length 6.6 mm.; Fig. 8b, dorsal 

 view showing zigzag pattern. Guanico. Panama. Holotype, ANSP 

 218938. 



9. Gouldia californica Dall 271 



Length 5.5 mm. Esmeraldas, Ecuador. P"RI 25686. 



