1865. ] MR. 0. A. L. MORCH ON THE VERMETID. 99 
Tirrebourres, Davila, Cat. Rais. 1767, t. iv. f. e?; Buonanni, Re- 
creatio, t. 20. f. C (quoad formam). 
Hab. ? ad Manillam? (Mus. Hamburg.). 
The lid of the true genus Tenagodus was unknown to me. I have 
now had an opportunity of examining a specimen of 7. squamatus, 
Bly., from St. Thomas’s, in Mr. A. H. Riise’s collection. 
Operculum irregulare, ineurvo-conicum ; anfr. eciliis sat longis ; 
area centralis pallide flava, sulco profunde circumscripta, seg- 
mentis radiantibus circiter 7, centro obscuro latiusculo, puncto 
centrali albo ; limbus angustus, nitidus, reflexus, marginatus. 
SERPULA cosTALis, Lam. Guérin (Iconographie du R. A. t. 1. 
f. 2), represents probably the typical specimen of Lamarck, and is 
thus the same species as Vermiculus contortus, Soldr. 
VERMETUS CONTORTUS, /3. FAVOSA, probably owes its remarkable 
sculpture to a Flustra, which it has copied, in the same manner as 
I have mentioned that a specimen of Vermetus cereus, Carp., has 
copied an Astrea. 
VERMETUS ANELLUM, Morch. As this species is always sinistral, 
it cannot be the young of Vermetus squamigerus, but is more likely 
to be a Spirorbis. The genus Strebloceras is quite unknown to me; 
the Haliotis on which it is found is perhaps only.a variety of H. cor- 
rugata (Gray), from which it differs in being rounder, more convex, 
and in the pearly interior being whitish. 
Bivonta susTRiQueTRA (Moreh) is, according to original speci- 
mens in the collection of Mr. O. Semper, Vermetus articulatus, 
Bonelli (Sismondi, Synopsis, ed. 2. p. 27). 
THYLACoDES ImsBricatus, Dkr. This name is preoccupied by. 
Sandberger ; the species must therefore be named 
THyYLAcopEs Apamsi1, Mérch, Journ. de Conch. 1859, p- 359; 
Adams, Ann. & Mag. of N. H. 1864, Feb., ps t4l. 
Siphonium, sp., Mrs. Gray, Figures of Moll. t. 2. f. 2-4, p. 82. 
From Japan, according to Mr. A. Adams; bvt not from Borneo. 
VERMETUS PERONII, Rouss. (Chenu, IIl. t. 4. f. 6), is perhaps 
different from V. peronii (Val., Voy. de la Venus). 
THYLACODES MELANOSTOMUS, Morch, n. sp. 
T. solitaria, spiralis, perforata, brunnea, crusta tenui (aliena) 
virescente, spiraliter lirulata, lire plerumque alternatim mi- 
nores ; lire 4—5 validiores, subequidistantes, nodulis oblongis 
remotis; lire inerementi minute, appresse, regulariter ap- 
proximate, hive illue acutiuscule, in intersectionibus lirarum 
nodulo obsoleta. Apertura circularis, Saucibus nigrescenti- 
badiis, columella candida. 
Diam. apertureze cire. 15 m. 
Hab. ad Zanzibar, in Murice angulifero Linn. affixum (Coll. O. 
Semper.) specimen unicum. 
