8 PKOCFrrtTxriR of the malacolootcal sociktt. 



spiram sequans, infra rimam striga nigricante cinctus ; sutura impressa ; 

 apertura verticalis, oblongo-ovalis, violacea ; columella recta, sub- 

 plicata ; peristoma valde expansum, album, marginibus approximatis. 

 Long. 34-5, diam. 16 mm. ; apertura 17 longa, 11 lata. 



Hob. — Antioquia, Colombia. 



This sliell resembles somewhat 1). cognatiis, Pilsbry. It is, however, 

 much thicker and has a more slender form. The umbilicus is deep in 

 each, but J), cognatus lacks the black streak behind the rimation. 



DRYM.EUS ACUMINATIJS, H.Sp. PI. I, Fig. 4. 



Testa acuminato-fusiformis, suburabilicata, solidula, alba, distanter 

 purpureo-fusco, longitudinaliter strigata ; spira acuminata ; anfractus 

 7i, modice convexi, ultimus f longitudinis testae sequans, oblique 

 fortiter striatus, sub lente transversim minutissime striatus ; sutura 

 impressa ; apertura oblonga, subflexuosa, intus albida ; columella 

 recta, violacea ; peristoma subexpansum, et antice effusum, margine 

 dextro arcuato, supra paulo sinuato, coliimellari subincrassato, breviter 

 reflexo, appresso. Long. 33, diam. 14 mm.; apertura 14 longa, 5 lata. 



Hah. — Matto Grosso, Brazil. 



A rather peculiar shell, unlike any known to the writer, who 

 obtained it at the dispersal of the collection of the late Mr. Miers, 

 with other Brazilian shells. 



Deym^us bellus, n.sp. PI. I, Fig. 5. 



Testa fusiformi-ovata, anguste umbilicata, teuuicula, nitida, alba, 

 strigis paucis obscure fuscis ornata, ad apicem rosacea ; anfractus 6, 

 leviter convexi, laeves, vel sub lente minute spiraliter striati, ultimus 

 f longitudinis totius eequans ; sutura impressa ; apertura ampla, ovata, 

 oblique dilatata ; columella reflexa, appressa ; peristoma album, 

 effusum et expansum, intus vivide violaceo-pui'pureum. Long. 33, 

 diam. 16 mm. ; apertura 18 longa, 12 lata. 



Hal. — San Martin, Colombia. 



This species has many of the characters of the typical form of 

 D. felix. In the shape, size, and colour of the aperture it resembles 

 I), conflimifi, Pfr., and D. v/olacens, Mouss., but lacks the nodule at 

 the base of the columella, which is present in those shells. 



Drtm.eits pseudo-fosoides, n.sp. PI. I, Fig. 6. 



Testa elongato-oblonga, subperforata, tenuis, subpellucida, Isevis, 

 nitida, albida, ad apicem rosea, strigis caerulescenti- fuscis, angustis 

 undatis longitudinaliter ornata ; anfractus 6, convexi, ad suturam 

 minute subcrenulati, et anguste marginati ; apertura oblonga, albida ; 

 labrum tenue, album, leviter expansum ; columella subrecta, superne 

 reflexa. Long. 33-5, diam. 12 mm. ; apertura 15 longa, 7 lata. 



Hah. — Bogota, Colombia. 



Only one example of this form of the group JD.fusoides was obtained, 

 but there is a shell in the British Museum similar in character 

 labelled B. fmoides, var. In the opinion of the writer it is specifically 

 quite distinct. 



