349 Mr. Jerrreys on the Testaceous Pneumonobranchous 
Under stones in moist sheltered situations, but not very 
common. The shell varies much in size. Dead ones are 
of an opaque white colour. 
First noticed as British by Mr. J. S. Miller in the Annals 
of Philosophy for 1822. 
25. ROTUNDATA. 
Animal pallidé griseum, superné punctatum. Sustentaculum 
perbreve, hyalinum. 
Testa depressior, subcarinata, striis argutis divaricatis ex- 
arata, rufo-maculata. Anfractus 6—T. Apertura com- 
pressa, suborbiculata, emarginata. Umbilicus valde 
patens, sinu profundo. 
Long. 0.125.— Diam. 0.375. 
Helix rotundata. Müll. Verm. 2. p. 29. Drap. Hist. des 
Moll. p. 114. t. 8. f. 4—1. 
—-— radiata. Da Costa Brit. Conch. p. 57. t. 4. f. 15, 
16. Mont. Test. Brit. p. 432. (. 24. f.3. Maton 
§ Rackett in Linn. Trans. 8. p. 199. 
a. viridescenti-albida, immaculata. 
Common in shady places, under decayed wood, &c. A 
single specimen of the variety has occurred to me from the 
. neighbourhood of Swansea. 
26. UMBILICATA. 
Animal nigro-griseum, politum. Tentacula superiora cylin- 
drica. 
`- Testa subdepressa, subcarinata (presertim juniores), diva- 
= ncate striata, brunnea. Anfractus vix 5, suturá exca- 
- vata. | Apertura compressa, suborbiculata. Umbilicus 
En patens. at | 
— — Long. 0.05.— Diam. Qd. 
Helix 
