A N M I A . 



Plate IV. 



Species 16. (Fig. a, b, Mus. Cuming.) 



Anomia lampb. Anom. lestd suboblique qitadratd,ri(di, 

 radiatim costatd, costis inlerrupiU, irregularibiis,flex- 

 uosis, versus marginem muricuto-squamatis ; tenia, 

 kyalino-albd, valvd superiore virescente-luteo vel au- 

 rantio-rvfo, inferiore arugmoso-camleo tinctd. 

 The scum Anomia. Shell somewhat obliquely square, 

 rude, radiately ribbed, ribs interrupted, irregular, 

 flexuous, prickly-scaled towards the margin; thin, 

 hyaline-white, upper valve stained with greenish-yel- 

 low or orange-red, lower valve with verdigris-blue. 

 Gray, Pro. Zool. Soc. 1849, p. 115. 

 Hab. California ; Lady Wigrani. 



The ribs of the upper valve of this hyaline bright-co- 

 loured species are irregularly wrinkled, and sometimes 

 priokly-scaled. 



Species 17. (Mus. Cuming.) 



Anomia strigilis. Anom. testd obliqui ovatd, rudi fim- 

 briato-laminatd et pecuUariter pectutato-cosiatd ; luteo- 

 corned, medio purpurascente. 



The currycomb Anomia. Shell obliquely ovate, rudely 

 firabriately laminated and pectinately ribbed ; yellow- 

 ish-horny, purplish in the middle. 



Of this shell, formerly in the collection of George Hum- 

 phreys, nothing is known as to its habitat. The peculiar 

 pectinate festooned ribs, protruding from the laminte, ap- 

 pressed into the hyaline texture of the upper valve, leave 

 little doubt as to its specific distinctness. Such a regularity 

 of sculpture could not be accidental, nor could it be de- 

 rived from any pattern connected with its place of attach- 

 ment. 



Species IS. (Fig. a, 4, Mus. Cuming.) 

 Anomia laqueata. Anom. testa stiboblique uvatd, valvd 

 superiore tumido-incurvd, radiatim costatd, costis an- 

 gustis, regularibus, subdistantibus, versus nmrginem 

 obsoletis ; hyalino-albd, plus minus aurantio-ceneata, 

 valvd inferiore planulatd, concentrice Inminafo-striaid. 

 atruginoso-cceruha. 

 The fluted Anomia. Shell somewhat obliquely ovate, 

 upper valve tumidly incurved, radiately ribbed, ribs 

 rather narrow, regular, somewhat distant, obsolete 

 towards the margin ; hyaline-white, more or less 

 orange-bronzed, lower valve flat, concentrically lami- 

 nately striated, verdigris-blue. 

 Uab. ? 



The distinguishing specific character of this shell con- 

 sists in the regularly radiating fluted sculpture of narrow 

 distant ribs, and delicate orange-bronze colouring in the 

 upper valve, which is almost as tumidly incm-ved as in J. 



Achans. 



Species 19. (Mus. Cuming.) 



Anomia pacilus. Amm. testa suborbiculari, 



plana, radiatim flexuoso-costatd, costis subdistantibus, 

 plus minus obsolete nodidatis ; fitscu-aneatd. 



The swarthy Anomia. Shell somewhat orbicular, con- 

 vexly flattened, radiately flexuously ribbed, ribs rathi.r 

 distant, more or less obsoletely uoduled ; fuscous- 

 bronze. 



Gray, Pro. Zool. Soc. 1849, p. 117. 



Sab. Tumbez, Peru ; Cuming. 



A very characteristic fuscous-bronze shell, rather flat, 

 with faintly nodided ribs radiating in a flexuous manner 

 at unequal distances from a rather sharply defined umbo. 



