622 EDGAR A. SMITH. 
slender riblets arranged in groups of three to five. Named after Mr Forster Cooper who was 
associated with Mr Stanley Gardiner in the exploration of these islands. 
298, Pecten maldivensis, n. sp. (Pl. XXXVI. figs. 19, 20). II, IV, VI. 
Testa compressissima, albida, plus minus roseo radiata et maculata, et maculis albis opacis 
interdum variegata, tenuissime radiatim striata, lineisque incrementi tenuibus sculpta; valvae sub- 
aequales, dextra vix convexiore; auriculae inaequales, posticis paulo majoribus, levibus, anticis costis 
tenuissimis paucis radiantibus ornatis. 
Longit. 17 mm., alt. 19, diam. 33. 
Very compressed and usually very finely radiately striated, but sometimes smoother, with less 
distinct striae. The colour is variable, some specimens are entirely white with only a few colour- 
spots on the dorsal slopes. Others are dirty whitish, with about seven rather obscure reddish rays 
and one example has the right valve rayed with red and the left blotched with opaque white and 
red. All exhibit the red-spotting at the sides of the dorsal slopes. 
299. Janira gardineri, n. sp. (Pl. XXXVI. figs. 21, 22). V, VIL. 
Testa mediocriter compressa, suborbicularis, costis 19 planatis, quadratis, latioribus quam sulci, 
instructa, undique confertim tenuissime concentrice lamellatay valva sinistra plana, albida, rufo 
lineata et punctata, dextra alba, umbones versus rufo tincta; umbones laeves, acuti, contigui, haud 
radiatim striati, nitidi, albidi, lateribus convergentibus rectis; auriculae inaequales, posticis paulo 
majoribus, costis paucis radiantibus tenuibus parum conspicuis instructae, transversim tenuissime 
lamellatae, et linea cardinis valvae dextra squamicristata; pagina interna alba. 
Longit. 25 mm., alt. 23, diam. 6. 
A very beautiful species well characterized by the flat-topped and square-cut costae which are 
rather broader than the intervening grooves. The concentric fine lamellae seem liable to disappear 
from the grooves in the flat valve, but they are very conspicuous on the costae and towards the 
umbo are thickened, so that they are more like granules than lamellae. The red markings occur 
both on and between the ribs. In the convex valve the lamellae are as conspicuous in the sulci 
as upon the costae. The lamellae upon the auricles are much more delicate and closer than those 
upon the rest of the shell. This species probably attains larger dimensions than those given above. 
300. Pallium plica, Linn. (Pecten plica: Reeve, 37,VZIZ). II—VI. 
301. Amussium paucilirata, n. sp. (Pl. XXXVI. figs. 23, 24). V. 
Testa parva, compressa, tenuis, pellucida, laevis, polita, aequivalvis, valva sinistra alba, dextra 
pellucida albo et rufo radiata et variegata, radio conspicuo albo supra latus anticum ornata; auriculae 
inaequales, postica valvae sinistrae infra leviter sinuata, posteriori valvae dextrae majori; umbones 
acuti; pagina interna radiatim substriata, lira brevi unica utrinque instructa. 
Longit. 74 mm., alt. 74, diam. 2. 
An interesting little species, having one valve pure white and the other mottled and rayed 
with white and red. The presence of only two internal lirae is also remarkable. In addition to 
these a short lira runs from the ligament-pit along the base of each auricle. Although the 
surface of both valves looks smooth and glossy, under a lens fine striae of growth are visible, 
The umbones are acute, that in the coloured or right valve being a little more prominent than 
that of the left. The opaque white ray down the anterior side appears to be a specific feature, 
for it is present in all the specimens examined. 
302. Semipecten forbesianus, Adams and Reeve, 37, V/. 
