MOLLUSCA. 637 



' Pinopea Aldrovatidi.—Wdrovunda^'a Panopea. Plate Ixxx. fig. 8 and !). 

 Trjtjisversely elongated, undulated; concentrically wrinkled; of a yellow 

 tewn-colour. Inhabits tlie Mediterranean. 



Sofen e?WM.— The Sabre Solen. Platelxxx.fig.il. Linear, sabre-shaped, 

 somewhat reflected at the end next the hinge; in each valve a single com. 

 pressed tooth without laminae ; olive-brown towards the base of the shell, 

 and next the apex brownish-purple. From five to seven inches broad. In- 

 habits the seas of Europe. 



Gastiochwna modiulma.— The Modiolaform Gastrochoena. Plate Ixxx. 

 fig. IR. Oval, thin, brittle, gaping at the side ; of a light reddish-brown ; in. 

 side bluish-white. Three-fourths of an inch long. Inlmbits the Britisli 

 coasts. 



Pholux crispatus.— The Curled Pholaa. Plate Ixxx. fig. 17. Somewhat 

 oval ; reticulated on the anterior half, and separated from the plain wrinkled 

 half by a broad furrow doivn the middle. Two inches long and three broad. 

 Inhabits the British coasts. 



Teredo navalis.— The Ship Teredo, or Ship Worm. Plate Ixxx. figs. 13 

 to 22. Cylindrical, taper, smooth, white, somewhat flexnous, finely striated 

 longitudinally. Inhabits the European seas, in timber. 



Teredina personata.— The Masqued Terediua. Plate Ixxx. fig. 22. Shell 

 consisting of a straight tube, like the stump of a tree, with a club-shaped 

 termination, the club consisting of several similar shaped lobes. Fossil from 

 Courtagnon. 



Septaria a retiaria.— The Sand Septaria. Plate Ixxx. fig. 23. Tubular, 

 tapering, terminating in a slender undivided tube. Found iu sand on the 

 shores of the Indian sea. 



Fistulana gregata.— The Gregarious Fistnlana. Plate Ixxx. figs. 24 to 

 26. Sheath doubly club-shaped, congregating; the shells angularly arcuat. 

 ed, with double, angulated, serrated wings. Minute. 



Clavagella aperta.— l he Open Clavagella. Plate Ixxx. fig. 27 and 28. An 

 erect tube, adhering to another body ; with a funnel-shaped, expanding, en- 

 tire, and waved aperture ; provided with an ovate face.valve. 



Aspergillum Javanum.— The Java Aspergillum. Plate Ixxx. fig. 29. 

 Smooth, club-shaped, the apex surrounded by fimbriated rays. Five inchea 

 long^. inhabits the sea at Java. 



CLASS III.— CIRRIPEDA. 



The animals are soft, destitute of head or eyes, covered with a shell, 

 which is fixed to other substances, and incapable of locomotion. The body 

 is inarticuiated, provided with a mantle, having tantacular, cirrous, or many- 

 pointed arms or feelers above. 



The class Cirripeda is divided by Lamarck into two orders.— I. Peduncu- 

 LATA. The body supported by a tubular moveable peduncle, the base of 

 which is attached to extraneous substances in the ocean, such as stones, 

 wood, &c. ; the mouth is usually placed below.— II. Sessilia. The body 

 xvithout a peduncle, and attached upon extraneous substances; the mouth 

 usually at the top. 



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