344 MISCELLANEOUS PAPERS. 



Plate I. 



(Fig. A.) 



Halioiis rufescens Swainson (Museum No. 74877), the red-backed ear-shell or abaloue 

 of California aud elsewhere, on the west coast of America (somewhat reduced). 



The figures 1, 2, aud 3 indicate nodules caused by the burrowing of a 2>holad, Peni- 

 teUa parva, and 4, 5, and 6 show other nodules, the nacreous coating removed by ac- 

 cident or otherwise, exposing the edges of the pholad shells, etc. 



From nature, by W. H. Chandlee. 



(Plate II.) 

 Fig. B. 



Right valve of the pearl-oyster, mother-of-pearl shell Meleagrina fimlriaia Dun- 

 ker, two-thirds natural size (a West Mexican species) showing rounded and elongated 

 tubercles or nodulaj caused by perpendicular and inter lamellar perforations of litho- 

 (lomi. 



From nature, by W. H. Chandlee. 



Specimen belongs to U. S. Nat. Museum, No. 73934&. 



(Fig. C.) 



Eight valve (two-thirds natural size) of Meleagrina finibriaia Dkr., mother-of-pearl 

 shell from west coast of Mexico with parasitic fish Fierasfer inclosed in same. 

 From nature, by A. Z. Shindler. 

 Specimen belongs to the Mexican Geograi)hical Commission. 



Plate III. 



(Fig. D.) 



Eight valve (two-thirds natural size) of Meleagrina fimhriaia Dkr., mother-of-pearl 

 shell from west coast of Mexico with parasitic fish Oligocoitus sp. inclosed in same. 

 From nature, by A. Z. Shindler. 

 Specimen belongs to the Mexican Geographical Commissior 



(Fig. E.) 



Left valve (two-thirds natural size) of Meleagrina fimlmata Dkr., from west coast of 

 ^[exico, with parasitic fish OUgocottus sp. inclosed in same. 

 From nature, by W. Jl. Chandlee. 

 Specimen belongs to the U. S. Nat. Museum, No. 73934a. 



