1920.] 



NATURAL SCIENCES OF PHILADELPHIA. 



381 



running to the upper anterior margin. The pallial sinus is deep, 

 extending past the beaks. The right valve has two diverging car- 

 dinal teeth, and a pink spot on the hinge margin on each side of the 

 cardinal region. 



Length 11.4, altitude 6.3, diameter 3 mm. 



Fig. 16. — Heteroglypta kanaka n. sp. 



Off Waikiki, near Honolulu, 35-50 fms. D. B. Langford. 



While it differs from H. contrarius Dh. in proportions of the shell 

 and arrangement of the sculpture-areas, I have not found any more 

 closely related species. 



Loripes (Pillucina) spaldingi n. sp. Fig. 17. 



The shell is rather strong, rounded-oval, higher than long, very 

 plump; white with some unevenly spaced grayish streaks along 

 darker lines of gi'owth-arrest. Sculp- 

 ture of rather irregular but close 

 concentric wrinkles and radial Hnes, 

 which are distinct at the ends but 

 nearly obsolete in the median part. 

 Beaks rather prominent, median. 

 Anterior end evenly rounded; post- 

 erior end less produced and less 

 convex; basal margin strongly con- 

 vex. Lunule small, rather deeply 

 impressed, wider and deeper in the 

 right valve. The internal margin 

 is finely crenulate. Cavity of the beaks narrow and deep. There 

 is a stout median cardinal tooth in the right valve, a prominent, 



Fig. 17. — Loripes spaldingi, n. sp. 



