8 
testa politd, tenui, pellucidd, plus minusve depressd et angulatd ; 
anfractibus superné subcomplanatis, infra ventricosis ; labio in- 
terno tenui, antic paululim inflato ; columelld angustatd, ad basim 
leviter angulatd ; labio externo tenui, expanso, reflero, super angu- 
lum plus minusve depresso ; operculo interne rubro, externe sub- 
margaritaceo. 
Hab. apud ins. Philippinas. H. Cuming legit. 
Var. a, T. aurantid, magnd, angulatd. Alt. °40; lat. ‘60. Sorso- 
gon, pr. Albay, ins. Luzon. 
Var. b. T. aurantid, minori. Alt. *20; lat. +25. Sinait, Ilocos, ms. 
Luzon. 
Var. c. T. aurantiacd, superné rubrd. Misamis, ins. Mindanao. 
Var. d. T. aurantid ; fascid rubrd in medio super angulum anfrac- 
tuum. Abulug, pr. Cagayan, ins. Luzon. 
Var. e. T. aurantid, fascits albis binis ornatd. St. Nicholas, ins. 
Zebu. 
Var. f. T. aurantid, superné pallidé rosed. Abulug, pr. Cagayan, 
ins. Luzon. 
From the large, somewhat angulated, orange variety, down to the 
more globose and small varieties, the gradation is so slow that it is 
impossible to find a line of demarcation sufficiently distinct to admit 
of specific separation, although the two extremes differ coy 
in general appearance. 
Heticrina simitis, Sow. jun., Thes. Conch. Hel. testa H. polite 
simillimd, sed impolitd, concentricé leviter striatd, fuscd. 
Hab. apud insulam Guadaloup. Mus. Cuming. 
Hexicina parva, Sow. jun., Thes. Conch. f. 82. Hel. testd H. 
polite simillimd, sed magis rotundatd, labio externo minimé de- 
presso. 
Hab. Argao, ins. Zebu. H. Cuming legit. 
Found on leaves of bushes, and differs only from the smaller va- 
rieties of H. polita in being globular, and having the outer lip not at 
all depressed above. 
Hexicina GuapaLouPEnsis, Sow. jun., Thes. Conch. f. 65, 66. 
Hel. testa levi, depressd, subangulatd, concentricé leviter striatd ; 
columella ad basin subnodosd ; labio externo crasso, reflero ; an- 
Fractibus gradatim crescentibus, supra infraque subventricosis ; 
operculo fusco. 
Hab, apud insulam Guadaloup. Mus. H. Cuming. 
Var. a. T. rubra, lutescente, majori. Alt. °35; lat. °60. 
Var. 6. T. pallide brunned, minori. Alt. 20; lat. -35. 
A memoir on the family of Towracoos, by Dr. E. Ruppell, was next 
read. In this memoir the author characterizes the following two 
new species of the genus Chizerhis from Abyssinia :— 
CHIzZ#RHIS PERSONATA. Chi. regione ophthalmicd, genis, mento 
et guld, pennis denudatis, cute nigricante, vibrissis brevissimis 
vestita ; pileo crista plicatilis, plumis lazis, elongatis, colore mu- 
