173 



. JPiswn rotundatum, H. & A. Adams, Loc. sup. cit. li, 660, 

 1858. 

 JPisidium rotundatum, Prime, Cat. Corb. 15, 1863. 



Smith. Inst. Misc. Coll., Prime Monog. Corb. 72, f. 81, 

 82, 1865. U. S. of America. 



'38. P. semen, Menke, Moll. N. Holl. 40, 1843. _ 



Pisum semen, Deshayes, Brit. Mus. Cat. Conchif. 284, 1854. 



MuscuUum semen, H. & A, Adams, Gen. Rec. Moll, ii, 660, 



1858. New Holland. 



39. P. simile, Prime, Cat. Corb. 15, 1863. 



Smith. Inst. Misc. Coll., Prime Monog. Corb. 69, f. 74, 1865. 



Guadeloupe, W. Indies. 



40. P. Steenbuchii, Morch. 



Qyclas Steenbuchii, Moller, Krojer. Natur. Tids. iv, 76, 1842. 

 Sphcerium Steenbuchii, Deshayes, Brit. Mus. Cat. Conchif. 264, 



1854. 

 Pisidium Steenbuchii, Morch, Prod. Moll. Gronl. 19, 1857. 



Prime Cat. Corb. 17, 1863. Grreenland. 



41. P. subtruncatum, Malm. Sweden. 



42. P. supinum, Schmidt, Zeit. Malak. 119, 1850. 

 MuscuUum supinum, H. & A. Adams, Gen. Rec. Moll, ii, 452, 



1858. 

 Pisum supinum, H. & A. Adams, Loc. sup. cit. ii, 660, 1858. 



G-ermany. 



43. P. ultramontanum, Prime, Smith. Inst. Misc. Coll., 

 Prime Monog. Corb. 75, f. 85, 1865. California. 



44. P. variabile, Prime. 



Qyclas nitida, Linsley (non Mighles), Am. J. Sci. xlviii, 276, 



1845. 

 Pisidium variabile, Prime, Proc. Soc. N. H. Bost. iv, 163, 1851. 



J. N. H. Bost. vi, 351, pi. xi, f. 7—9, 1852. 

 Pisidium grande, Whittemore, in litt., 1855. 

 Pisidium palustre, Lewis, in litt. 

 MuscuUum variabile, H. & A. Adams, Gen. Rec. Moll, ii, 452, 



1858. 

 Pisum variabile, H. & A. Adams, Loc. sup, cit. ii, 660, 1858. 

 Pisidium variabile. Prime, Cat. Corb. 14, 1863. 



Smith. Inst. Misc. Coll., Prime Monog. Corb. 66, f. 69, 



70, 1865. U. S. of America. 



45. P. ventricosum, Prime, Proc. Soc. N. H. Bost. iv, 68, 

 1851. 



MuscuUum ventricosum, H. & A. Adams, Gen. Rec. Moll, ii, 

 452, 1858. 



