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fissirostral family Bucconide, of which I believe the five just de- 
scribed to be hitherto unrecognised. Two of them are to be found 
in the Derby Museum at Liverpool; of two there are specimens in 
the British Museum: the only example of the Malacoptila sub- 
striata | have yet seen is in my own collection. 
Four natural genera have been constituted in this family, Bucco, 
Malacoptila, Monasa, and Chelidoptera. For the more debile and 
passerine form of Malacoptila, represented by the Bucco rubecula, 
Spix, and Lypornix ruficapilla, Tschudi, I propose the new generic 
or subgeneric appellation Nonnula, type N. rubecula (Bucco rube- 
cula, Spix, Av. Bras. i. t. 39. fig. 1. p. 51). The members of this 
section are much inferior in size to the true Malacoptile. 
2, Descriptions ofr NINETEEN New Species oF HELICcEA, 
FROM THE CoLLECTION oF H. Cumine, Ese. 
By Dr. L. Preirrer. 
1. Hexrx Ganoma, Pfr. H. testa aperta, perforata, turbinato- 
depressa, solida, sublevigata, spiraliter indistincte striata, ver- 
nicosa, fulva; spira convexo-conoidea, obtusa; sutura impressa, 
simplice ; anfractibus 5, convexiusculis, ultimo inflato, medio 
subcarinato, infra angulum et circa perforationem late fusco- 
fasciato, non descendente, basi distincte radiato-striato ; aper- 
tura obliqua, subangulato-lunata, intus lactea; peristomate 
recto, obtuso, lilaceo-limbato, margine columellari superne bre- 
viter dilatato, repando. 
Diam. maj. 51, min. 43, alt. 26 mill. 
Hab. in insula Ceylon rarissima (Ff. Layard). 
2. Hextrx concavospira, Pfr. H. testa subperforata, trochi- 
formi, tenui, via striatula, sub epidermide fugace, fulvescente 
alba; spira concavo-conica, apice acutiuscula ; sutura submar- 
ginata ; anfractibus 7, planiusculis, ultimo convexiore, medio 
acute carinato, antice non descendente, bast convexo ; apertura 
parum obliqua, angulato-lunari ; peristomate simplice, recto, 
margine columellari arcuato, ad perforationem brevissime re- 
flexo. 
Diam. maj. 133, min. 12, alt. 11 mill. 
Had. in insula Ceylon (Thwaites). 
3. Heiix uypuasma, Pfr. H. testa vix perforata, trochiformi, 
tenui, confertim radiato-striata, sulcis remotioribus spiralibus 
quasi texta, pellucida, corneo-albida ; spira subconcavo-conica, 
acutiuscula ; sutura marginata; anfractibus 73, convexiusculis, 
ultimo convexiore, compresso-carinato, non descendente, basi 
convexo, nitido, sublevigato ; apertura obliqua, rhombeo-lunari ; 
peristomate simplice, recto, margine columellari substricte de- 
scendente, superne vix dilatato, refleaiusculo. 
Diam. maj. 15, min. 133, alt. 103 mill. 
Hab. in insula Ceylon ‘Thwaites). 
