Testacella. MOLLUSCA. PULMONIFERA. 257 



obviously the " Limax succini colore, albidis maculis insignitus," of Lister, 

 Conch, t. 101. 6., but as the letter A is not placed at the figure, which is the 

 usual mark of an English species, there is no evidence of its being native. 



Gen. XV. TESTACELLA. — Vent and pulmonary cavity 

 nearly terminal. Foot extending on each side beyond the 

 body. 



50. T. Maugii. — Reddish, with scattered brown spots, and 

 a stripe of brown on each side. 



Fer. Hist. Moll, i. 94. t. viii. f. 10-12. Miller, Annals of Phil. xix. 380. 

 — In nursery grounds, Bristol. 

 Tentacula filiform ; mouth orange. Shell ovate, lengthened, convex, co- 

 vered with a dusky cuticle, striated by the layers of growth ; rounded and 

 effuse anteally, ending retrally in a short spine, with a slightly prominent 

 knob ; margin of the opening entire, subquadrangular. — This species was ob- 

 served by Mr T. Drummond (at present engaged in exploring the Arctic 

 Botany of North America) in 1812, in the nursery grounds of Messrs Sweet 

 and MiUer. Specimens were transmitted by Dr Leach to Baron Ferussac. 

 It feeds on the earth worm, into the holes of which it effects its entrance. 

 Eggs few, ovate. It inhabits Teneriffe, and was probably introduced along 

 with exotic plants. 



51. T. haliotoidea. — Greyish clouded, or reddish, without 



spots. 



Draparnaud, Hist. Nat. des MoUusques, p. 121. t. ix. f 12, 13. Fer. 

 Moll. i. 94. t. viii. f 5-9 — T. scutata, Sower. Gen. Ric. Shells, 1, 3, 6. 

 — In a garden at Lambeth. 



Tentacula cylindrical ; a groove on each side, from the head to the shell. 

 Shell ovate, depressed, rounded anteally, thick, brown, striated by the layers 

 of growth : acuminated retrally, with an imperfect spire, in the form of a 

 minute light coloured knob. — This species was found in Mr Sowerby's gar- 

 den at Lambeth. The specimens obligingly presented to me by Mr J. C. 

 Sowerby, incline me to consider them as identical with the species long ago de- 

 scribed by Draparnaud. In the description Mr G. B. Sowerby adds, " the 

 animal of this species bears a near resemblance to that of T. haliotoidea, not 

 having the double row of tubercles running from the head to the anterior 

 part of the shell so conspicuous in T. Maugii." 



COCHLEAD^. 



Gen. XVI. CYCLOSTOMA.— Peristome of the shell thick- 

 ened, entire. Tentacula hnear, subretractile, the second 

 pair minute, bearing the eyes. 



52. C. elegans. — Whorls 5, ventricose, spirally and longitu- 

 dinally striated. 



VOL. I. R 



