662 aEPOK?r OF COMMTSSIONEE OP FISH AND FISHERIES. [160] 



Plate XXX. 



Fig. 127. Teredo megotara. Side view of the animal in expansion, one-half natnra 



size. 



Fig. 128. Poromya suMevisY. Inner surface of right valve, enlarged three diametei-s 

 Fig. 129. Newra viuUicostata V. & S., enlarged three diameters. 

 Fig. 130. Thracia nitida V. Type specimen, enlarged one and oue-half diameters. ^ 

 Fig. 131. Veriicordia cwlata V. Type specimen, enlarged ten diameters ; a, interio 



of the right valve ; i, exterior of the same valve. 

 Fig. 132. MytiUmeria flexuosa V. & S. Type specimen, enlarged one and one-hal 



diameters. 

 Fig. 133. Pholadomya araia V. & S. Portion of right valve of two specimens t 



show variations in the hinge, enlarged two diameters ; a, form with mp 



thickened hinge margin ; 6, shorter and more triangular form wit 



thinner hinge margin. 

 Fig. 134. The same. Type specimen. Exterior of the right valve, enlarged ob 



and one-half diameters. 

 Fig. 135. Diplodonta tiirgida V. & S. Interior view of right valve, enlarged on« an 



one-half diameters. 



I 



