130 PLEKOCHEILUS. 



Above -Aqua Dulce, 3000 ft. 67x42J ; apert. 46 mill. 



Don Amo Estate, 3500 ft. 65x411 ; apert. 40^ mill. 



Las Partidas, 3500-3800 ft. (a) 48^x30 ; apert. 30|. (b) 54Jx 

 341 ; apert. 34. (c) 70^x45 ; apert. 46 mill. 



Oriaca Estate, 4500 ft. (a) 74x46^; apert. 47^. (b) 74x49; 

 apert. 48^. 



Valparaiso, 4500 ft. 82x56 ; apert, 56 mill. 



El Libano, 6000 ft. (a) 83^x53 ; apert. 53. (b} 77^x53 ; apert. 

 51^. (c) 86x58 ; apert. 59. (d) 92x59 ; apert. 60 mill. See pi. 

 21, fig. 64. 



These specimens are larger than those from lesser altitudes. They 

 are quite thin, with indistinct, mottled pattern, densely and minutely 

 sprinkled with yellow dots, the granules being mainly of that tint. 

 The peristome is pink. They are as large as var. ampullaroides 

 (Mouss.) or larger, but differ from that form in the sloping or taper- 

 ing upper portion of the whorls, which is not swollen as in Mousson's 

 variety. 



According to Mr. Smith, P. coloratus is found on the ground 

 among dry leaves and they are very hard to find an account of their 

 assimilating color. 



Var. subplicatus Pfr. (vol. x, p. 198, 199) is evidently close to the 

 form of coloratus found in the Santa Marta range. Figures are here 

 given (pi. 21, figs. 67, 68), copied from Pfeiffer. 



I have little confidence in the records of P. coloratus from Ecuador. 



P. DOLIARIUS (Da Costa). PL 24, fig. 5. 



Shell ovate, umbilicate, somewhat thick, exceedingly ventricose. 

 Whorls 5, minutely granulated throughout, transversely very closely 

 striate, the striae rugose and minutely undulating, delicately plicate 

 at the sutures ; last whorl very ample, inflated, obliquely descending. 

 Columella somewhat twisted, callous above; lip reflexed. Smoky 

 chestnut, the aperture and peristome purplish-lilac. Length 58, 

 diam. 41 mill.; aperture 40 mill. long. 26 wide (Da Costa). 



Paramba, Ecuador. 



Strophocheilus (Eurytus} doliarius DA COSTA, Proc. Malac. Soc. 

 London, iii, p. 84, fig. I (July, 1898). 



This shell, while it approaches both gibbonius Lea and castaneus 

 Pfr., differs from them in form and sculpture. 



