46 GENA-BRODERIPIA. 



G. lineata Ad., P. Z. S. 1850, p. 39 ; Thes. Conch, ii, p. 830, t. 

 173, f. 26, 27. 



Genus BRODERIPIA Gray, 1847. 



Broderipia Gray, Proc. Zool. Soc. Lond. 1847, p. 146. Type, 

 Scutella rosea Brod. — Scutella Broderip, in part, P. Z. S. 1834, p. 48, 

 not Scutella Lamarck. 



The animal of Broderipia is unknown. The species may be 

 divided into two sections. I, species with the apex decidedly 

 recurved, nearer the posterior margin than to the center, includes 

 rosea, iridescens, subiridescens, cumingii. II, species with more 

 conical, limpet-like form, the apex nearer the middle than the edge, 

 nitidissima, eximia. 



B. iridescens Broderip. PI. 1, figs. 5-8 ; pi. 2, figs. 41, 42. 



Shell limpet-shaped, with oval outline and posterier apex, the 

 margins expanded ; in profile it is very depressed, highest a little 

 back of the middle, the slope from apex upward short and concave, 

 from apex downward gently convex. Surface lusterless, with 

 scarcely visible growth-striaB ; opaque-white, radiately striped with 

 olive-bordered red lines, generally interrupted and forming a tessella- 

 ted white and dark pattern. The apex is minute, recumbent, spiral, 

 dextral. Inside brilliantly iridescent, not showing the color-pattern 

 clearly except at the red-and-white spotted margins. 



Length 8, breadth 5 J, convexity If mill. 



Grinnvood's Island, S. Pacific ; Is. of Reunion. 



Scutella iridescens Brod., P. Z. S. 1834, p. 48. — Broderipia irides- 

 cens Brod., Adams, P. Z. S. 1850, p. 39 ; Thes. Conch, ii, p. 832, t. 

 173, f. 32, 33.— Deshayes, Cat. Moll, de lTle de la Reunion, p. 69. 



Beautifully iridescent inside, and more depressed than the follow- 

 ing forms. It is quoted by Deshayes from Reunion, on the west side 

 of the Indian Ocean — giving the form a very wide distribution. 



B. subiridescens Pilsbry, PI. 1, figs. 1, 2, 3, 4. 



Shell limpet-shaped; outline oval; apex nearly attaining the 

 posterior margin ; in profile the posterior slope is very short, concave ; 

 the anterior long and convex ; it is highest near the apex. Surface 

 nearly smooth, concentric growth-lines microscopic ; white, covered 

 with a netted pattern of dots connected by lines of red. Apex 



