121 



T. solitaria affixa, anfr. depressis, suturis expansis, 

 anfr. ultimo longo porrecto albescente. 



Tubulus testaceus solitarius aiiguinus Mart. 1. f. 15. 



Serpula conica Wood Index, t. 38. f. 22. p. 186. 

 (copi.) 



Hab. Westindies in Cytherea maculata (Martini) St. 

 Thomas (Riise.) 



t retifer (Aletes) Mörcli 1. c. 



T. agglomerata, vertice affixa, spiraliter torta, cas- 

 tanea vel ferruginea, lineis transversis saturatioribus ; 

 anfr. fere ubiqvie contigui, ampli (nee graciles), lirulis 

 longitudinalibus latiusculis nodulosis, interstitiis subae- 

 qualibus punctato- foveatis : rugae incrementi reguläres, 

 in intersectionibus subnodosae; anfr. ultimus longus, 

 porrectus, cylindricus, pallidus; columella sape badia, 

 lira elevata mediana. 



Diam. apert. circ. 5 mm.; anfr. penult. circ. 8 mm. 



Operculum teuue, flavum, superne concaviusculum. 

 Diam. 3 mm. 



T. foetalis (noudum nata) bulimoidea, subcylindrica, 

 apice bullato; anfr. 2Y2, convexis, sutura profunda; 

 apertura obliqua rliomboidea, inferne subefFusa ; columella 

 recta, inferne producta; labro superne leviter retuso. 



Long. lYg mm. 



Serpula Born Test. p. 435 fig. min. 



Humphr. Conch. t. 10. f. 14. 



Vermetus conicus Dill. Mörch J. C. VII. p. p. 

 346 (fc 347. VIII. p. 38. 



Hab. St. Thomas massa aggregata in Strombo accipit- 

 rino. (Riise.) 



Thylacodes Guettard. 



Tulaxodes Guett. 1774. Thylacodes Ag. Serpulus 

 Mtf. Mörch. Serpulorbis Sassi. 



490. Thylacodes Riisei Mörch. 



T. solitaria, repens, tenuiuscula, albescens, carneo vel 

 pallidissime lilacino variegata; anfr. ampli, ])raesertim 



