256 SIPUNCULUS, SOLEfiT. 



10 2. SIPUXCULUS. Spec. 2. 



nudus, (tube- worm,) body covered with a 

 skin, and globular at the lower end. In the 

 sea and under stones. 8 inches long. 



saccatus, body covered with a loose skin and 

 rounded at the lower end. Appears as if en- 

 closed in a bag. 



See MS. P. 



& 4. Si KEN. Spec. 1 



mcertina, (siren,) body eel-form ; branchise rami- 

 fied. From 8 to 18 inches long. It is said that 

 Capt. La Conte has discovered another species 

 in Louisiana, and that another was discovered 

 in Maj. Long r s Expedition. 

 See MS. P. 



89. Si REX. Spec. 26. 



gigas, (tailed wasp,) abdomen yellow at the baser 

 and tip ; body black-blue. 



See MS. P. 



22. SITTA. Spec. 12. 

 europoza, (nuthatch,) cinereous, beneath reddish : 



tail-feathers black, the four lateral ones beneath 



tipped with white. 6 inches long. 

 canndensis, (american nuthatch,) cinereous, pale* 



rufous beneath ; eyelids white. 5 inches long. 



See Mb. P. 



93. SOLKX. Spec. 23. 



vagina, (razor-sheath,) shell linear, straight* 

 roundish, one end margined : hinge with a sin- 

 gle opposite tooth in each valve. 6 qr7 inches 

 long. 

 fifce MS. P.. 



