1862.] M.0.A.L. MORCH’S REVIEW OF THE VERMETIDE. 77 
17. THYLACODES MICHAUDII, Rousseau. 
Vermetus michaudii, Rouss., Chenu, Ill. pl. 2. f. 5. 
Hab. ? (Mus. Cuming). 
Diam. cire. 6 m. 
In Mr. Cuming’s collection is a specimen labelled ‘ Philippines,” 
which seems to correspond pretty well with the figure quoted ; it has 
the same annular ribs and longitudinal striz, but is nearly covered 
over with a chestnut-brown colour, showing some darker longitu- 
dinal bands. The specimen is singular from possessing a long varix 
maniciformis, with about 12-13 false septa (analogous to those of 
the water-clam), proving that the animal has changed the direction 
of its tube at least as often as indicated by the septa. 
18. TuyLAcopEs Porites, Rousseau. 
T. tenuis, repens, teres, longitudinaliter subtilissime striata ; strie 
incrementi obsoletissime, confertissime ; sulci incrementi regu- 
lariter remoti, interstitiis convexiusculis; faucibus sepe fla- 
vescentibus. 
Diam. 34—4 m. 
Vermetus porites, Rouss., Chenu, Ill. pl. 2. f. 3. 
Hab. ? Ona Porites, according to the specific name; but 
I believe the coral represented is a Palmipora, Blainv., as in my 
specimen. 
This species is exceedingly like 7. decussatus, var. intermedia, if 
it really be different. It is chiefly distinguished by the annular, 
equidistant, rather remote annular sulci, the interstices of which are 
very slightly convex and decussate. This shell is the only one I 
know which seems to approach to Gualtieri’s tab. 10. f. L, L. 
19. TuHyLacoDEs PROTENSUS, Gm. 
T.nitida, leviuscula, annulatim plicata, finem versus parum atte- 
nuata, lactea, exalbida aut cerulescens, calami anserini crassitie 
aut tenuiore, tota porrecta, aut partim flexuosa (Gm.). 
; Tubulus cylindricus, subflecuosus, anguinus, Matt. i. pp. 24, 46, 
712A. 
Serpula protensa, Gm. S. N. p. 3744. no. 20. 
Hab. In mari Indico et Americam alluente (Gm.). 
Gmelin has taken his description from Martius, but the locality 
from Rumphius and Davila. This shell is perhaps identical with 
the preceding and following species. It is chiefly from the ex- 
pressions “'T. nitida’”’ et “caerulescens,” that I refer this species 
to the Vermetide. 
20. THyLACODES RUMPHII, Blainy., 1828. 
* Coq. tubulaire, irrégulitrement contournée, si ce n’est & sa base 
qui s’avance presque 4 droite ligne, élégamment treillisce dans tout 
son étendu sans caréne; de couleur roussdtre. Je distingue cette 
espéce d’aprés un individu de ma collection, dont j’ignore la patrie, 
et qui certainement ne peut étre réuniau S. protensa, Lam.” —Blainv. 
