M A L L E U S. 



Species 7. (Mus. Cuming.) 

 JLvLLEUS TiGRiNus. Mall, testd ovatd, suhpeciinatd, 

 valide concentrice plicato-laminald, deinde tenui, obli- | 

 que prolongatd ; albidd, parte tenui maculis purpureis 1 

 asperad. I 



The tiger-spotted Malleus. Shell ovate, somewhat ; 

 pectinate, strongly concentrically plicately laminated, 

 then thin, obliquely prolonged; whitish, the thin por- 

 tion sprinkled with purple spots. 

 Eab. Moluccas. 



It is a curious typical peculiarity of the smaller species 

 of Malleus assembled in this Plate that the sculptured shell 

 is formed as a nucleus about the umboes, from which pro- 

 ceeds a more or less elongated, semitranspareut, irregular 

 lamina. ^_^_ 



Species 8. (Mus. Cuming.) 

 Malleus rufipunctatus. Mall, testd subtnyono-nvald, 

 concentrice plicato-laminatd, deinde irregulariter tenue 

 prolomjatd ; albidd, parte tenni livido-corned, maculis 

 purpnrascente-rvjis obscure pictd. 

 The ked-dotted Malleus. Shell somewhat trian- 

 gularly ovate, concentrically plicately laminated, then 

 irregular, thinly prolonged; whitish, thin portion livid- 

 horny, obscurely painted with light purple-red spots. 

 Hab. West Columbia ; Cuming. 



As in the preceding species, the most characteristic fea- 

 ture lies in the colouring of the thin, irregular, protruding 



The shortened Malleus. Shell ovate or oblong, 

 neatly laminated near the umboes, then very rough ; 

 whitish, stained and spotted with purple. 



Lamarck, Anim. sans vert. vol. vii. p. 93. 



Hab. New Holland. 



Of a less delicate texture than cither of the preceding 



species, purple-spotted, with a rougher exterior. 



Species 11. (Mus. Cuming.) 

 Malleus aquatilis. Mall, testd trapezoided, concentrice 



undato-plicatd, deinde tenue prolongatd, parte tenui 



pellucido-corned, obscure fasciatd. 

 The rippled Malleus. Shell trapezoid, coucentrically 



wave-plaited, then thinly prolonged, the thiu portion 



transparent-horny, obscurely banded. 

 Hab. Isle of Plata, West Columbia ; Cuming. 



The nucleated portion of this shell is arranged in con- 

 spicuous trapezoid plaits, whilst the thin portion is ob- 

 scurely banded. 



Species 9. (Mus. Cuming.) 

 Malleus maculosus. Mall, testd trigono-qnadratd, 

 parvd, .lubobscure laminatd, deinde tenui, aniplifer pro- 

 longatd, tumidinscnld, pellucido-corned, purpureo ma- 

 culosa. 

 The freckled Malleus. Shell triangularly square, 

 small, somewhat obscurely laminated, then thin, 

 largely prolonged, rather swollen, trausparent-horny, 

 spotted with purple. 

 Hab. Lord Hood's Island, Pacific Oceau ; Cuming. 



The thin, prolonged lamina of tliis shell is almost blad- 

 der-like, the sculptured nucleus having the appearance of 

 a parasite upon it. 



Species 13. (Mus. Cumiug.) 

 Malleus vesiculatus. Mull, testd subtrapezoided, con- 

 centrice dense plicato-laminatd, deinde tenue prolon- 

 gatd, parte tenui oblongo-quadratd, longitudinaliter 

 lirato-slriatd, tumidd, irregulariter vesirulatd ; in- 

 ten.te rufo-purpured. 

 The blisteued Malleus. Shell somewhat trapezoid, 

 1 concentrically densely plicately laminated, then 



thinly prolonged, the thiu portion oblong-square, 

 longitudinally ridge-striated, swollen, irregularly blis- 

 tered ; deep reddish-purple. 

 Ilab. Isle of Plata, West Columbia ; Cuming. 



The prolonged laminar growth of this species is singu- 

 larly swollen and much blistered. 



bpecies 10. (Mus. Ciuuing.) 

 Malleus decu status. Mull, testd ovatd vel oblongd, 

 prupe umbones nitide laminatd, deinde valde rugosd ; 

 albidd, purpureo tincld et maculatd. 



Species 13. (Mus. Cuming.) 



^Malleus solitauius. Mall, tesld oblique elongatd, tenuis- 

 sinid, pellucidd, pallide aneo-rufescenle, radiatim un- 

 dato-liratd. 



The solitary Malleus. Shell obliquely elongated, very 

 thin, transparent ; light coppery-red, radiately wave- 

 ridged. 



Hab. Grimvvood's Island, Pacific Ocean; Cuming. 



A delicate, transparent, coppery-tinged shell, not be- 

 longing to the nucleated type, which is cliaracteristic of 

 the other species in this Plate. 



November, 1858. 



