PECTEN. 



Plate XXX. 



^0^' 



Species 134.. (Fig. a, h, Mus. Cuming.) 



Pecten nobihs. Fed. tesld sulorbicidari, compresso- 

 convexd, (eqmlateraU, mqu'walvi, costis chiahiis et vl- 

 ginli radiatd, costis anticis temdsquamatis, interstit'ds 

 suhtiliter serraio-liratis, costis lateralibus versus nm- 

 loiiem squmnatis, squamis suhretnotis, ei'ecto-nmricatis ; 

 albidd, purpurascente-fusco tincld et vuriegatd, inter- 

 dnm intense croced ; auriculis inaqimlibus, plus minus 

 sqnamatis. 



The noble Pecten. Shell nearly orbicular, eompressly 

 convex, equilateral, cquivalve, rayed with tvvo-and- 

 twenty ribs, anterior ribs thinly scaled, interstices 

 finely serrately ridged, lateral ribs scaled towards the 

 umboes, the scales lieing rather distant and erectly 

 prickly ; wMtish, tinged and variegated with pur- 

 plish-brown, sometimes deep satFron-yellow ; ears 

 unequal, more or less scaled. 



Ilab. Moreton Bay, Australia ; Strange. 



This fine species, from Moreton Bay, is perfectly dis- 

 tinct from any other hitherto known, though not distin- 

 guished very strikingly in general aspect. 



Species 135. (Mus. Cuming.) 



Pecten laqueatus. Feci, testa semirjlobosd, <Eqiulaterali, 

 vaMe infpquivalvi, valvd sinistra depresso-concavd, in 

 dextrd immersd, concentrice dense striata, costis ocfo ro- 

 tmidatis distantibus radiatd, fidvo-rufescente, costis sa- 

 turatioribus, versus vmbonem interruptis ; valvd dextrd 

 valde convexd, ventricosd, costis septem latissimis lavi- 

 bus, costis duabus ndnoribus ad ntrumqiie latus, inter- 

 stitiis angustis, profuude excavaiis, concentrice striata- 

 scabrosis; albd, maculis perpaucis rufis prope umbonem ; 

 auriadis aqnali/ms. 



The guttered Pecten. Shell semiglobose, equilateral, 

 very inequivalve, left valve depressly concave, im- 



mersed in the right valve, concentrically densely 

 striated, rayed with eight rounded distant ribs, ful- 

 vous-red, ribs darker red, interrupted towards the 

 umbo ; right valve very convex, ventricose, with seven 

 very broad smooth ribs, with two smaller ribs on 

 each side, interstices narrow, deeply excavated, con- 

 centrically striately scabrous ; white, with a very few 

 red spots near the umbo ; ears equal. 



Sowebby, Thesaurus Couch, vol. i. p. 46. pi. 15. f. 101. 



Ilab. California. 



Described by Mr. Sowerby, ft-om a single valve, the 

 right one. In the accompanying figure, the left valve, 

 which was not known to him, is the most conspicuous. 



Species 136. (Mus. Cuming.) 



Pecten tegula. Feet, testa trigono-orbiculari, altiore 

 quani longd, compressd, subirregidari, vix aquilaterali, 

 inequivalvi, valvd sinistra costis novem ad tredecim plus 

 minus conspicue foUaceo-sqwamati,s irregulariter radi- 

 atd, dextrd mnltiliratd, liris oblusis, dense brevisqua- 

 maiis ; purp?treo-casta>ied, sqiiamis palUdioribns, umbo- 

 nibus violascentibus ; auriculis valde inaqualibus. 



The tile-eoof Pecten. Shell triangularly orbicular, 

 higher than long, compressed, rather irregular, 

 scarcely equilateral, inequivalve, left valve irregularly 

 rayed with nine to thirteen more or less conspicu- 

 ously foliaceous-scaled ribs, right valve manv-ridged, 

 ridges obtuse, densely short-scaled ; purple-chestnut, 

 with the scales paler, umboes violet ; ears very un- 

 equal. 



Wood, Index Testaceologicus, Supp. p. 7. pi. 2. Ostrea, 

 f 3. 



Hab. Sydney ; Strange. 



Distinguished from all other Pectens by its irregular 

 foliaceous-scaled Spondyhts-Mkc growth. 



June, 1853. 



