100 



MONODONTA. 



the Index Testaceologicus are anterior to that of Q.uoy and Gaim., 

 but being unaccompanied by descriptions have not been adopted. 

 Watson's figures of the undoubtedly synonymous T. fuligineus are 

 given on my pi. 19, figs. 1, 2. 



M. LUGUBRIS Gmelin. PI. 19, fig. 93 ; pi. 35, figs. 24, 25. 



Shell imperforate, depressed conic, solid, thick, blackish, dotted 

 upon the ribs with yellow or white ; spire conic, more or less depressed, 

 apex acute ; whorls 5, spirally strongly ridged, the ridges nodulous, 

 3 on the penultimate whorl, interstices spirally striate ; last whorl 

 depressed, angulate at the periphery, concentrically lirate below, the 

 line coarsely granulose, about 5 in number ; aperture very oblique, 

 the outer lip edged with blackish, then nacreous, and lined with 

 opaque white, the thickening slightly notched at the place of the 

 periphery ; columella oblique, nearly straight, flat, opaque white, 

 backed by nacreous. Alt, 9, diani. 13 ; alt. 13, diam. 15 mill. 



^ew Zealand. 



Trochus lugubris GMEL., Syst. Ifat., xiii, p. 3583. FISCHER, Coq. 

 Fit'., p. 189, t. 62, f. l. T. nngulatus QUOY ET GAIM. Voy. de 

 I'AstroL, t. 64, f. 16-20 (not T. cingulatusBrocc\\'iii<n' Menke). T. 

 gaimardi PHILIPPI, Conchy I. Cab., p. 211, t. 31, f. 7-9. Diloma 

 gaimardi HUTTON, Manual N. Z. Moll, p. 96. T. bernardi RECLUZ, 

 Journ. de Conch., 1852, p. 166, t. 7, f. 5. T. sulcatus WOOD, Lid. 

 Te4. suppl., t. 6, f. 40 (not T. sulcatus Martyn nor Lam.). T. 

 bicanalieulatus DUNKER, PHILIPPI, Conchy I Cab., p. 202, t. 30, f. 6. 



A small species, sufficiently distinct from all others in its cari- 

 nated, ridged, granulose whorls. It is more nearly allied to M. strio- 

 lata than to any other species. The sculpture is quite variable. T. 

 bicanalieulatus Dunker (pi. 35, fig. 12, 13) seems to be synonymous. 

 It is placed here by Fischer. 



M. LEPROSUS Philippi. PI, 34, figs. 23, 



Shell depressed conoidal, umbilicate, solid, blackish-brown, sculpt- 

 ured with 4 to 6 irranose cinguli ; whorls rapidly increasing, the last 

 rounded; base ornamented with 5 elevated rather smooth cinguli; 

 aperture subcircular inside; columella with denticles on its lower 

 outer part, above impinging over the umbilical tract. (Phil.) 



The shell is very thick, depressed-conoidal. The 4-5-5 whorls 

 widen very rapidly ; the last is rounded. The sculpture consists of 

 4 to 6 elevated warty or granose spiral cinguli upon the upper sur- 

 face, and 5 pretty smooth Iira3 beneath; the interstices are smooth, 



