558 PROCEEDINGS OF THE ACADEMY OF [July, 



Debeaux, China." Debeaux collected in Chinese waters and pub- 

 lished a little-known and not very valuable paper on his results in 

 Recueil de Memoires de Medicine, de Chirurgie et de Pharmacie mili- 

 taires, redege sous le surveillance du Conseil de Sante, 3 ser., VI, Paris, 

 1861 ; but no mention is made therein of a Cardium tchcliense. I have 

 been unable to trace it in the literature examined. The name suggests 

 that of a province of northern China, but being orthographically 

 defective, I have thought its retention undesirable. 



Kellia porculus n. sp. PI. XLI, figs. 18, 19, 20. 



The small cream-white subglobular shell resembles K. japonica Pils. 

 in outlines, except that it is decidedly more ventricose. The glossy 

 surface is minutely striate, with stronger irregularities at unequal dis- 

 tances indicating periods of growth-arrest. In the right valve there is 

 a single rather Inroad, oblique cardinal tooth, with a socket and a 

 minute tubercle above it, and a small, triangular lateral. The left 

 valve has two erect, subequal cardinals and a strong, triangular lateral. 



Length 8.5, alt. 8, diam. 6 mm. 



Hirado, Hizen. Type No. 86,266, A. N. S. P., from No. 1,011a of 

 Mr. Hirase's collection. 



In 7v. japonica Pils. the teeth are all much more delicate and the 

 shell is less inflated. The hinge of K. japonica is figured for compari- 

 son, pi. XLI, fig. 21. 



Solecardia vitrea japonica n. subsp. PI. XLI, fig. 6. 



Shell resembling S. vitrea Quoy and Gaimard {Scintilla aurantiaca 

 Desh.) in shape, but smaller and white. 



Length 10.3, alt. 5, diam. 3 mm. 



Hirado, Hizen. Types No. 86,276, A. N. S. P., from No. 1,544 of 

 Mr. Hirase's collection. 



Myodora reeveana Smith. PI. XLI, figs. 7, 8, 9, 10. 



Shell small, solid, yellowish-white, with the right valve quite convex 

 and projecting beyond the other below, the left valve flat and smaller. 

 Behind the beaks the dorsal valve-margins are concave and excavated, 

 in front of them they are slightly convex. The basal margin is strongly 

 arcuate, the posterior end truncate and biangular, and the anterior 

 end narrowly rounded. Both valves are irregularly sculptured with 

 coarse wrinkles, the convex valve more strongly so. The pallial sinus 

 is small and triangular. In the right valve the anterior lateral tooth 

 is a long, perfectly straight ridge, the posterior tooth is very small and 

 narrow, largely overhung by the concave valve margin. In the left 



