NO. 16 Simpson's genus liguus — bayer 3 



The nomenclature adopted in this paper is in accordance with 

 Pilsbry's ^ most recent decisions on the matter. His system recog- 

 nizes most of the forms thrown unconditionally into the synonymy 

 by other authors, taking into consideration the fact that many are the 

 end points in variation of the same subspecies. Although the majority 

 intergrade perfectly, the extremes are easily recognizable, and are 

 worthy of a certain degree of systematic distinction. Naturally, 

 several of Simpson's "subspecies" fall into this category. It is not 

 the purpose of this paper to discuss the validity of these forms, how- 

 ever, and those interested in the taxonomic complexities are referred 

 to Pilsbry's excellent monograph. 



The publication of the accompanying color plate of Liguus types 

 has been possible only through the unlimited generosity of the Uni- 

 versity of Miami, and I am deeply indebted to Dr. Jay F. W. Pearson, 

 vice president, and to Dr. E. Morton Miller, chairman of the zoology 

 department, not only for making this paper possible, but for hearty 

 encouragement as well. I also wish to thank Dr. Harald A. Rehder, 

 curator of mollusks of the United States National Museum, for check- 

 ing the manuscript, and for making many necessary arrangements 

 connected with its publication. 



LIGUUS FASCIATUS SOLIDUS variety PSEUDOPICTUS Simpson, 1920 



Plate I, figure i, the type 



Liguus solidus pseudopictus Simpson, 1920, Proc. I3iol. Soc. Washington, vol. 

 2Z, p. 122. 



Type figure. — Proc. U. S. Nat. Mus., vol. y:^, art. 20, pi. i, fig. 9. 

 Dimensions. — Length 50 mm., diameter 25 mm. 

 Type locality. — Lower Matecumbe Key, Fla. (upper end of island). 

 Range. — Lower Matecumbe Key. 



LIGUUS FASCIATUS GRAPHICUS variety DELICATUS Simpson, 1920 



Plate I, figure 2, the type 



Liguus solidus dclicatus Simpson, 1920, Proc. Biol. Soc. Washington, vol 33, 

 p. 122. 



Type figure.— Froc. U. S. Nat. Mus., vol. 73, art. 20, pi. i. fig. 4. 

 Dimensions. — Length 39 mm., diameter 21 mm. 

 Type locality. — Lower Matecumbe Key, Fla. (upper end of island). 

 Range. — Upper and Lower Matecumbe, and Indian Ke\ s, Fla. 



" Pilsbry, Henry A., Land Mollusca of North America (north of Mexico), 

 vol. 2, pt. I. Acad. Nat. Sci. Philadelphia. Monogr. No. 3, 1946. 



