56 
It is very distinct from any known Bulimus, but has affinities with 
B. terebralis, B. columellaris, and B. clausilioides. 
Buuimus rimpriatus. Bul. testd imperforatd, subuliformi, tenui, 
costis longitudinalibus subarcuatis, lineis confertis parallelis in 
interstitiis costarum sculptd, rufo-fuscd, suturd impressd ; an- 
fractus 7-8, tumidi, ultimus 4 longitudinis vix superans, infra 
medium obsolete carinatus ; columella subsimplex, ad basim aper- 
ture angulum formans ; apertura subovalis ; peristoma simplez. 
Long. 9, diam. 2 mill. ; apert. 2 mill. longa, 1 lata. 
(Pl. IX. fig. 7a, 6.) 
In a box of shells labeled “Panama.” The nearest ally of this 
very curious shell is the Bulimus gracillimus of Pfeiffer, from Cuba. 
BuLimvus ACHATELLINUS. Bul. testd perforata, umbilico parvo, 
conicd, obsolete striatd, nitiduld, flavidd, fusco-fasciatd ; suturd 
cingulatd, crenulatd, albidd ; anfractibus 7-8 conveaiusculis, ulti- 
mo vir 4 longitudinis equante ; apertura semiovalis, peristoma 
rectum, simplex, acutum; columella obsolete contorta, margine 
columellari reflexo, perforationem semitegente. 
Long. 19, diam. 10 mill. ; apert. 5 mill. longa, 4 lata. 
(Pl. IX. fig. 5 a, 6.) 
This shell is from Chatham Island, Gelepagos; it is unlike any 
other known Bulimus, and its characters distinctly indicate affinity 
with the Achatinelline. 
Succingea cincuLata. S. testd oblongo-ovatd, vix obliqud, soli- 
duld, striatd, nitiduld, fulvo-succined, sepe spiraliter albo-lineatd ; 
spird exsertd, obtusd ; anfractus 4, convexiusculi, ultimus 2 longi- 
tudinis equans ; aperturd elongato-ovata, superne acutd, basi ob- 
liqué pone axin recedente ; columelld arcuatd. 
Long. 12, lat. 6 mill. ; apert. 7 mill. longa, medio 3 lata. 
(Pl. IX. fig. 8 a, 6.) 
This Succinea is distinct from any recorded by Pfeiffer. It is said 
to come from Mazatlan. The very fine white spiral lines are not 
always clearly marked in colour ; they correspond with lines of deeper 
depression at intervals of the strize of growth. 
BA 
CycLostoma puruM. C. testd orbiculari, depressd, albd, niti- 
duld, spird elevatiusculd, luteold ; anfractibus sex, rotundatis, 
spiraliter sulcatis, sulcis numerosis, transversé striatis ; aper- 
turd subcirculari, obliqud, peritremate simplici ; umbilico maximo ; 
operculo 3 
Diam. 48, alt. 17 mill. (Pl. IX. fig. 9 a, 6.) 
Very near C. Cumingii, a species described by Mr. G. Sowerby 
from the island of Tumaco. 
5. On THE CHARACTERS OF THE GENERA PUSIONELLA AND 
Cuavatuta. By J. E. Gray, F.R.S. etc. 
In the List of Genera of Mollusca published in the Proceedings for 
] 1848, I gave the name of Pusionella to a genus of shell, referring to 
the Nefal of Adanson and the Murex pusio of Born as the type. 
