138 



6. Glandina arcuata, Pfr. Gland. testd fusiformi-turritd, tenui- 

 usculd, nitidd, subarcuatim et confertim costulatd, succineo-flavidd, 

 strigis angustis, remotis, arcuatis, rufis , pallide marginatis ornatd; 

 spira subulatd, acutd; suturd crenulatd ; anfractibus 9 plonis, 

 ultimo ^ longitudinis subceguante ; columelld strictiusculd, breviter 

 truncatd; aperturd oblongd ; peristomate simplice. 



Long. 13, diam. 3į raill. 



7. AcHATiNA Adamsii, Pfr. {Bul. costulatus, Adams). Ach. testd 

 fusiformi-ticrritd, longitudinaliter distincte costatd, inter costas 



basi anfractds ultimi evanescentes subtilissime striatd, corned, 

 strigis rufis irregulariter ornatd ; spird turritd, apice acuto ; an- 

 fractibus 8 convexis, ultimo ^ longitudinis subcequante ; columelld 

 subrectd, basi obligue truncatd ; aperturd subrhombed. 

 Long. 7, diam. 2į mill. 



8. AcHATiNA GossF.i, Pfr. Ach. testd subulatd, tenui, diaphand, 

 cered, remote costatd, inter costas in anfractibus ultimis deorsum 

 obsolescentes subtilissime striatd; anfractibus 9 — 10 convexius- 

 culis, ultimo 1 longitudinis vix superante ; columelld oblicud, basin 

 aperturte attingente, breviter truncatd; aperturd angustd, ob- 

 longd; peristomate simplice, margine dextro deorsum dilatato. 



Long. 12, diam. 2f mill. 



9. AcHATiNA ABERRANS, Pfr. Ach. tcstd subulūtd, tetiut, nitidd, 

 lineis impressis longitudinalibus, regulariter distantibus notatd, 

 pallide succined, strigis rufulis, angustis, oblicuis, sparsis ornatd ; 

 spird subulatd, apice acutiusculo ; suturd leviter crenulatd; an- 

 fractibus 7 planiusculis, ultimo ^ longitudinis aguante ; columelld 



callosd, torto-subtruncatd ; aperturd oblongd ; peristomate simplice. 



Long. 7, diam. 2 mill. 



This species belongs to a peculiar aberrant group of the genus 

 Achatina, of which the tj-pe seems to be Ach. columnaris. The co- 

 lumella is not exactly truncated, but rather contorted, and forms a 

 prominent angle, -vv-hich appears similar to the truncated columella 

 of the true Achatinas. To this šame group may be referred another 

 very distinct and beautiful species, collected by INIr. Lattre in Cen- 

 tral America, and making, likę all formerly described species, part 

 of the rich coUection of Mr. Cuming. 



10. Achatina Lattrei, Pfr. Ach. testd glandiformi, Itevissimd, ni- 

 tidd, fulvd, strigis castaneis leviter arcuatis irregulariter ornatd ; 

 spird brcvi, conoided, acutiusculd ; anfractibus 7 planis, ultimo % 

 longitudinis fere (Eąuante ; columelld callosd, contortd, extus sub- 

 truncatd ; aperturd angustissimd, basi dilatatd ; peristomate sim- 

 plice, obtuso, margine dextro antrorsum leviter arcuato. 



Long. 38, diam. 14 mUl. 



A paper by Dr. Philippi was then read, containing " Descriptions 

 of a new species of Trochus, and of eighteen new species of Littorina, 

 in the collection of H. Cuming, Esq." : — 



Trochus Cumingii. Tr. testd late conicd, umbilicatd, acutd, car- 



