Pseudonenia penangensis oritis (Laidlaw, 1931)  

Laidlaw (1931) original descriptions on Clausilia orites – “Shell sinistral, solid, elongate, fusiform, purple-brown, finely and evenly striate. Whorls ten, moderately convex, suture simple, well impressed. Aperture auriform, its margins white, peristome well reflected; the upper lamella reaching the margin, the lower not emerging. Palatal plicae five, the principal long, one millimetre below the suture, the next three equidistant from each other, short, the middle of the three the shortest, whilst the fifth is close below the fourth, and much shorter than it. Protoconch smooth, whitish, usually much worn.”

Loosjes (1953) descriptions on Pseudonenia penangensis orites – “Shell of medium size, ventricose fusiform, rather solid, yellowish- or reddish- to violet-brown, glossy, semitransparent. Whorls 9 ½-10, moderately convex, sculptured with fine, even, transverse striae (about 18 to the mm on the whorl above the aperture), which are hardly any stronger on the neck. A white thread may occur below the rather shallow suture. The embryonic whorls are smooth and whitish, sometimes a little irregularly attached to the next whorl. The neck is rather strongly bent towards the base of the aperture. Aperture oblique, auriform, brownish within. The base of the aperture recedes. The peristome is continuous, white and shining, distinctly reflexed; the upper margin is clear of the preceding whorl and distinctly bent. From the sinulus, the outer margin is regularly curved downward, whereas the parieto-columellar one is mainly curved in its upper parts. Lamella superior is moderately high and reaches the margin; it is connected with lamella spiralis; the latter ends inward together with lamella inferior. Lamella inferior is rather low. It has a cordlike-edge and does not reach the margin. The lamella soon runs inward and upward, in such a way that its base is not visible if one looks obliquely from below into the aperture. The columella may be visible in the aperture as a distinct edge. One gets the impression that the lamella inferior is forked. Lamella subcolumellaris is not visible if one looks into the aperture. The closing apparatus is situated at the right side, the plica palatalis principalis runs from beyond the ventral to a little beyond the dorsal side. It is a half whorl long. Below is there are 4, sometimes 5 plicae palatals, rather regularly distributed over the whorl; at least 3 are relatively long, the lowest being the shortest. Below them the lamella subcolumellaris is sometimes visible through the shell. The plate of the clausilium is long and narrow with parallel sides, the top is hardly thickened, length 3.1, width 1.3 mm.”