DESCRIPTIONS OF NEW SPECIES OF DRYMJEUS, AMPEICYCLOTUS, 

 AND NEOCYGLOTUS, FROM SOUTH AND CENTRAL AMERICA. 



By S. I. Da Costa. 



Read lOth November, 1905. 



PLATE I. 



Drym^us Sykesi, n.sp. PI. I, Fig. 1. 



Testa elongate -fusiformis, ampliter umbilicata, solidula, albida, 

 strigis fasciisque fusco-nigricantibus, conspicue fenestrata ; spira 

 acuminata ; anfractus 7, leviter convexi, ultimus \ longitudinis 

 sequans, sub lente minutissime transversim striatus ; sutura impressa ; 

 apertura oblonga, verticulis, intus albida ; peristoma album, late 

 expansum et retiexum, marginibus callo purpureo junctis, columellari 

 valde dilatato, fornicato. Long. 52, diam. 19 mm. ; apertura 24 longa, 

 13 lata. 



Hab. — Bogota. 



This shell, described from a single specimen, resembles a gigantic 

 B. cognatus, Pilsbry, but differs from that species in many other 

 respects than mere size, notably in being much thicker, and from its 

 heavy flaring lip. I have taken the liberty of naming this species 

 after my esteemed friend Mr. E. K., Sykes, the President of the 

 Malacological Society. 



Drtm^us notabilis, n.sp. PI. I, Fig. 2. 



Testa oblongo-ovata, tenuiuscula, compresse anguste umbilicata; 

 pallide fulvida, purpureo-fusco irregulariter strigata, et fasciis tribus 

 fuscis, interruptis ornata; spira attenuata, ad apicem acutiuscula; 

 anfractus 6, parum convexi, oblique creberrime plicato-striati, sub 

 lente transversim minute decussati, ultimus f longitudinis testae 

 aequans ; columella recta, violacea ; apertura ampla, ovali-oblonga, 

 intus rufo-violacea ; peristoma album, tenue, late expansum, margine 

 columellari breviter reflexo et appresso. Long. 33, diam. 17 mm.; 

 apertura 17 longa, 10 lata. 



Hab. — Antioquia, Colombia. 



As in other species from this region, a wide range of variability is 

 noticeable. The distinction in this shell from others in the B. felix 

 group lies in its more ventricose outline, its very narrow perforation, 

 and especially in the large ovate aperture. 



Deymjefs notatus, n.sp. PI. I, Fig. 3. 



Testa elongato - fusiformis, prof unde rimata, solidula, nitida, ir- 

 regulariter oblique subplicata, flavescens, strigis numerosis flexuosis 

 castaneis ornata, zona interrupta macularum subnigrarum uotata ; 

 spira pyramidata ; anfractus 6, parum convexi, ultimus bizonatus 



