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. PI. 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 below 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. 



