1904.] NATURAL SCIENCES OF PHILADELPHIA. 627 



Irazuyama, Tosa. Types No. 85,740, A. N. S. P., from No. 1,100 of 

 Mr. Hirase's collection. 



Eulota (Acusta) despecta ikiensis n. subsp. 



A small, rather thin, globose race, less depressed than E. d. kikaiensis, 

 thinner, and with no roseate streaks, the peristome not pink-lipped , 

 though the columella is pale flesh-tinted. It is weakly, irregularly 

 wrinkle-striate, showing traces of spiral striation in places; pale yel- 

 lowish-corneous or greenish, with narrow yellowish-brown streaks, 

 the early whorls delicately flesh-tinted. 



Whorls 5 to 5J. 



Alt. 15, diam. 15 mm. 



Alt. 14, diam. 14 mm. 



Yawata, Iki. Types No. 84,881, A. N. S. P., from No. 1,087 of 

 Mr. Hirase's collection. 



Eulota (Acusta) despecta prsetenuis n. subsp. 



This form is very thin and light, like E. sieboldiana, from which it 

 differs by the decidedly open umbilicus (like that of E. despecta) and 

 by being distinctly decussate throughout, with close spiral striae 

 crossing the oblique, irregular growth-wrinkles. Whorls 5J. Color 

 light greenish-yellow or yellowish-green. 



Alt. 20.5, diam. 25 mm. 



Alt. 21, diam. 23.5 mm. 



Kuchinoerabu-shima, Osumi. Types No. 87,559, A. N. S. P., from 

 No. 394a of Mr. Hirase's collection. 



This is one of those perplexing forms which unite characters of two 

 very distinct species. It might be treated as a subspecies of E. sie- 

 boldiana, of E. despecta, or a distinct species, according to the weight 

 one places upon this or that feature. Indeed, one of us had provision- 

 ally ranked it under sieboldiana as a variety. Its geographic location 

 is between the areas of the two Japanese Acustas E. sieboldiana rang- 

 ing from Kyushu north, and E. despecta inhabiting the Riukiu Islands. 



Eulota nioyaka n. sp. 



Shell umbilicate, globose-depressed, thin, glossy, pale yellowish- 

 corneous, faintly marked with fine growth-wrinkles. Spire low conoid ; 

 whorls 5, convex, the last rounded peripherally, convex below, 

 slightly descending in front. Aperture roundly lunate, oblique, the 

 peristome white, thin, expanded and narrowly reflexed. 



Alt. 6, diam. 8.6, width of umbilicus 1.5 mm. 



Alt. 6, diam. 8 mm. 



Alt. 5.8, diam. 7.6 mm. 



