MACROCERAMUS, CUBA. 139 



surface, and the reduced umbilical patch. There is sometimes 

 another row of spots above the wide dark band. 



21. M. CLERCHI ' Arango ' Pfr. PL 21, figs. 27, 28, 29. 



Shell perforate, oblong-turrite, rather solid, lightly striate, 

 somewhat glossy; white, encircled by series of chestnut spots. 

 Spire nearly regularly turrite, the apex buff, rather obtuse, 

 suture slightly subdenticulate. Whorls 12, a little convex, 

 the last rounded, ornamented with a blackish band b^low the 

 middle. Aperture subvertical, rounded-lunar; peristome 

 simple, the margins slightly converging, right margin nar- 

 rowly expanded, columellar margin reflexed, spreading, dis- 

 tinctly folded within. Length 17, diam. 6 mm., aperture 4.5 

 mm. long. (Pfr.) 



Eastern Cuba: at the mouth of the Tacre river (type loc.), 

 Cajobabo and Imias, dist. of Baracoa; also Jauco and Jojo 

 (Arango). 



M. clerchi Arango mss., PFR., Malak. Bl., xiii, 1866, p. 61, 

 no. 20; Novit. Conch., p. 382, pi. 89, f. 6-8; Monogr., vi, p. 

 345. ARANGO, p. 80. 



Pfeiffer's description is given above, and his figures are 

 copied on my plate. He remarks that it stands about midway 

 between M. pazi and M. gundlachi, but is very different from 

 both in mouth and peristome, and from other similar species 

 in wanting a keel. 



Two and a half apical whorls are smooth, white, with a 

 brown crown. They are often lost in adults. The next whorl 

 is of the same color but striate, and several whorls following 

 are blue-blackish. These early whorls are closely striate, but 

 the last 2 or 3 whorls are nearly smooth. The last whorl has 

 a black-brown subperipheral band, its lower edge often ser- 

 rate, and three spiral series of squarish chestnut spots, 

 arranged in oblique, irregularly-spaced series. Some speci- 

 mens have very few of these spots, while in more heavily- 

 colored examples the spots may be partially united into spiral 

 bands and oblique streaks. In one shell before me there is a 

 faint trace of an umbilical dark patch. 



