MONOGRAPH OF THE GENERA 



TEREDO AND KUPHUS. 



Genus TEREDO, Lamarck. 

 Plate 469. 



Molluscum acephalum, vermiforme, perforans, tubam 

 testaceam formans. Valvse tequales, arcuatse, utrinque 

 hiantes, per canalem in areis duabus medio divisee ; area 

 antica angulatim emarginata ; area postica plus minusve 

 alata ; processu subumbonali arcuatim producta. 



The well-known bivalved mollusc which bores tubular 

 boles in wood and lines them with shell, has its body pro- 

 tected by a globular bivalve shell. The valves gape on both 

 sides, the hiatus in front being angular. A curved projection 

 starts from under the umboes in each valve. A horny stylet 

 or shelly pallet is fixed in the upper part of the fleshy tube 

 on each side. 



Species with shelly pallets. 



1. NAVALis, f. 1, Linnceus. — Valvse oblique rotundse, hiatu 

 antico obtuse angulato, ala dorsali rotunda. Tuba solida, 

 ad terminum divisse, baud concamerata. Palmulse ligoni- 

 formes, ad terminum concavse. — The globose valves are more 

 oblique than most of the species, the angle of the front hiatus 

 wide, and the dorsal wing expanded and rounded. Tube 

 solid, divided at the end, not chambered. Pallets spade- 

 shaped, concave at the end. 



2. NORVEGICA, f. 2, Spengler. — Vulvae recte globosae, hiatu 

 rectangulari, ala dorsali angusta, areuata. Tuba ad terminum 

 concamerata. Palmulae ligoniformes, ad terminum convexoe. 



a G 



