TROCHUS. 41 



bearing a single strong spiral white rib near its base, which does not 

 attain the edge of the columella. Alt. 33-35, diam. 37-40 mill. 



Red Sea. 



T. erythrceu* BROCCIII, Git. di una ser. di Conchiglie, etc., p. 29. 

 (1819-1823.) T. kochii KIKNKR, Spec. gen. Trochii^t. :55, f. 2. (non 

 T.leochiiPhil.)--T.fi4ili8joBA.9Zeit8chr.f. Ma.I. f 1840, p. 125. 

 PHILIP?!, Conchy/. Cab. p. 288, t. 42, f. 10.? T. crebriliratus JONAS, 

 Zeitschr. f. Mai., 1840, p. 125 PiiiLrppi, Coiiclujl. Cab., p. 289, t. 

 42, f. 11. (pi. 42, fig. 14, 15.) 



T. SAGA Philippi. PI. 14, figs. 14, 15. 



The shell is conical, the whorls almost completely planulate, the 

 suture not impressed ; on the examples before me the last whorl is 

 descending, whilst the lower margin of the penultimate projects, and 

 passes with a blunt rounded angle to the level base. The sculpture 

 upon the upper side consists of 8 or 9 spiral series of granules ; 

 upon the base of to 7 feebly developed concentric line; the last 

 whorl shows fine obsolete longitudinal costaj ; aperture and colum- 

 ella precisely as in T. eryth ranis, to which this species is closely 

 allied. The coloration in the examples before me is very constant, 

 yellowish white with broad red rays, the base white, the line articu- 

 lated with red. Alt. 17, diam. 20 mill. (Philippi.) 



Habitat unknown. 



T. saga PHIL, Zeitxchr.j'. Mai 1840, p. 103. Conchy 1. Cab. p. 99, 

 t. 10, f/0. 



The above paragraph, from Philippi, contains all the information 

 I possess about this form, which is evidently closely allied to T. 

 erythrasus. 



T. CARINIFERUS (Beck) Reeve. PL 5, figs. 38-42. 



Shell false-umbilicate, \vide-conical, rather thin, dark green, the 

 upper surface irregularly broadly maculate with crimson or purplish 

 red, the ribs of the base articulated with the same ; whorls about 0, 

 somewhat convex, the upper surface of each whorl with usually four 

 or five spiral closely granose Urge, in the interstices between which 

 sharp microscopic oblique and spiral stria? are visible under a lens ; 

 body-whorl carinated at the periphery, usually with six lirse on the 

 upper surface, convex beneath, concentrically lirate, the lirse very 

 narrow, feebly granose or nearly smooth, separated by wide lightly 

 obliquely striate interspaces, the inner lira? closer ; aperture rhom- 

 boidal ; columella not folded above, but straight from the insertion 



