208 EUGLANDINA. 



with E. bellula C. and F., this species differs in being of nar- 

 rower form, with longer, narrower aperture, the posterior por- 

 tion of which is more prolonged and much narrower; also in 

 the -comparatively simple suture. It is more lengthened than 

 E. oblong a Pfr., and less plaited at the sutures. E. ambigua 

 Pfr. is stouter in form; and E. comdaris Pfr. has a wider 

 aperture and far more arcuate outer lip. 



80. E. ATTENUATA (Pfr.). Vol. I, p. 22. Central America. 



Group of E. monilifera. 



The surface is closely finely and evenly plaited, without 

 spiral striae ; the impressed varix-lines are usually accompanied 

 by a pale streak and preceded by a dark brown stripe. These 

 forms were referred to Varicella by Crosse and Fischer. 



81. E. PULCHERRIMA (Strebel). -PI. 27, figs. 35, 36, 37. 

 Shell strong, covered with a glossy cuticle, light ochre 



colored, with more or less intense brownish flesh-color, more 

 or less deep brownish towards the apex. The peristome has 

 a pale yellowish border, with a wider dark brown streak be- 

 hind it, fading backwards into the ground color. There are 

 two to four such growth-arrest streaks on the last two whorls. 

 The sculpture on the second whorl is of pretty regular and 

 closely arranged, very fine, arcuate riblets, which on the suc- 

 ceeding whorls increase, at first rapidly, then more slowly, 

 and lose in sharpness. The shape of the embryonic whorls, 

 the suture and columella are as in the monilifera group. 

 Whorls rather convex, the last coiled more obliquely than 

 the preceding, often more or less saccate below. 



Length 33.8, diam. 16.2, aperture 17.8 x 8 mm.; whorls 6*4. 



Length 28.5, diam. 13.4, aperture 14.8 x 6.6 mm.; whorls 



6%. 



Mexico : Quantatitlan and Ishuacan, State of Vera Cruz. 



Glandina monilifera form B, STREBEL, Beitrag Mex. Land- 

 und Siisswasser-Conch. ii, p. 49, pi. 13, f. 43, 43a. Glandina 

 pnlckerrima STREBEL, Verhandlungen des Vereins fiir natur- 

 wissenschaftliche Unterhaltung zu Hamburg, v, 1883, p. 104. 



Very like E. monilifera in color and form, yet it differs 



