1862.] M.0.A.L. MORCH’S REVIEW OF THE VERMETID. 69 
detached specimen shows a transition state. Fig. 5 of Chenu looks 
entirely different, and more allied to V. annulatus, Rouss. 
5, THYLACODES TURONIUS, Rouss. 
Vermetus turonius, Rouss., Chenu, Il. pl. 4. f, 44. 
Hab. 2 
According to the specific name, it would be from Touraine; but, 
from the colours in the aperture, it would seem to be a living shell, 
6. THYLACODES ANNULUS, Rouss. 
T. repens, laquearis, longitudinaliter subtiliter striata ; anfr., am- 
pliati : postice carina brevi crenulata (ex icone). 
Vermetus annulus, Rouss., Chenu, Ill. t. 1. f. 8. 
Hab. 2 
I do not know of any shell like the figure; but it seems to be a 
good species. 
7. THYLACODES RIISEI, Morch. 
T. solitaria, repens, laqueatim torta, tenuiuscula, albescens, carneo 
vel pallidissime lilacino variegata; anf. ampli, presertim aper- 
turam versus, liris longitudinalibus parvis planis approximatis 
alternatim minoribus, superne liris tribus remotis, tuberculis 
compresstusculis elongatis, sepe acutis, interdum muticis, con- 
Jluentibus, punctis ferrugineis interpositis ; strie incrementi mi- 
nute in intersectionibus lirarum minutissime imbricate ; latere 
affixo irregular, sepe fascia castanea lata longitudinali, 
Diam. aperture circ. 15 m. 
Desh. Traité de Conch. t. 79. f. 16, non absimilis. 
Hab. Ins. 8. Thome, Antillarum, Riise, Hornbeck (Mus. reg. et 
Univ.). 
Var. a, LIMACELLA. 
T. repens, solidula, candida, hic illie pallide earnea; anfr. sub- 
equales, lirulis longitudinalibus latiusculis planis confertis, liris 
latis 7-8 remotis undulatis vel obsoletissime nodulosis ; ruge 
inerementi juxta margines valide, inde lateribus fluctuatis ; 
strie incrementi obsoletissime ; apertura subovalis, affixa. 
Diam. aperture 64 lat., 8 m. alt. 
Hab. Ins. Antill., in Ostrea limacella, Lam., affixa (Mus. Cuming). 
This variety corresponds very well with the first whorls of the type. 
It differs chiefly by greater solidity and more regular liree, but other- 
wise looks very different. 
Var. @. MUHLENPFORDTII, 
T. albescens, solidula, agglomerata, primum repens vel irregulariter 
spiralis ; anfr. ultimus porrectus, teres, longus, leviter tortus, 
leviusculus, rugis et strits incrementi inequalibus ; lire longi- 
tudinales expresse, approximate ; superne seriebus tribus nodu- 
lorum compressorum ; lire incrementi undulata, approximate ; 
interstitiis lirarum irregulariter scrobiculatis, 
Diam. aperture circ. 6 m. 
