146 CONCHODERMA VIRGATA. 



2. CONCHODERMA VIRGATA. PL III, fig. 2. PI. IX, fig. 4. 



Lepas vikgata. Spengler. Skrifter Naturhist. Selbskabet., B. i, 

 1790, Tab. vi, fig. 9. 



— coriacea. Poll. Test, utriusque Sicil., PI. vi, fig. 20, 1795. 



— membranacea. Montagu. Test. Brit. Supp., p. 164, 1808, 



et Linn. Trans., vol. xi, Tab. xii, fig. 2. 

 Conchoderma virgattjm. Olfers. Magaz. Gesells. Naturfor. 



Freunde, Berlin, 1814, p. 177, (3d Quartel).* 

 Branta virgata. Oken. Lehrbuch derGesell, Th. ii, p. 362, 1815. 

 Senoclita fasciata. Schumacher. Essai d'un Nouveau Syst., 



1817. 

 Cineras vittata. Leach. Encyclop. Brit. Supp., Tom. iii, Plate. 



1824. 



— cranchii (!) chelonophilus (!) Olpersii (!). Leach. 



Tuckey's Congo Expedition, p. 412, 1818. 



— megalepis (!) Montagui (!) Rissoanus. Leach. Zool. 



Journal, vol. ii, p. 208, 1825. 



— membranacea. Macgillivray . Edin. New Phil. Journal, 



vol. xxxix, p. 171, 1845. 



— bicolor. Risso. Hist. Nat. des Productions, &c., 1826, 



Tom. iv, p. 383. 



— vittatus. Brown. Illust. of Conch., 1844, PL li, figs. 



16—18. 



Gymnolepas Cranchii. Be Blainville. Diet, des Sci. Nat. Hist., 



1824. 

 Pamina trilineata (!) (Var. Monstr.). J". E. Gray. Annals of 



Phil., vol. x, 1825. 



C. scutis trilobatis : tergis intils concavis, apicibus in- 

 trorsum leviter curvatis : carina modicd, leviter curvatd : 

 pedunculo in capitulmn coalescente. 



Scuta three-lobed : terga concave internally, with their 

 apices slightly curved inwards : carina moderately de- 

 veloped, slightly curved : peduncle blending into the 

 capitulum. 



No filament attached to the pedicel of the second cirrus. 



Var. chelonophilus (PI. Ill, fig. 2 c). Terga, minute, 

 nearly straight, solid, acuminated at both ends, placed 

 far distant from the other valves: carina, either minute 



* See page 136 respecting this date. 



