Revision «1er Rhyogodeen. i 05 



Sipunculus Gouldii Pourtales: in Proceed. Amer. Assoc. Adv. Sc. V. Meet. 

 1831. 40. 

 Habitaculum. In arenosis in profunditate unius pedis, ad 

 littora Novae Angliae (Pourtales). 



Species inquirendae. 



23. (11.) Phascolosomum tigriuum DIESING. — Syst. Helm. II. GG. 



24. (12.) Phascolosomum flavum DIESING. — Syst. Helm. II. GG. 



25. (13.) Phascolosomum fasciolatum DIESING. — Syst. Helm. 

 II. 66. 



26. (14.) Phascolosomum Nordfolcense DIESING. — Syst. Helm. 

 II. 67. 



27. (15.) Phascolosomum ambiguum DIESING. — Syst. Helm. II. G7. 



28. (16.) Phascolosomum Leachi DIESING. — Syst. Helm. II. 67. 



29. (16*.) Phascolosomum Pourtalesi DIESING. 



Corpus dense granulosum, griseum, maculis irregularibus nigris 

 dorsalibus. Proboscis et tentacula .... Longit. 2 — 3" et ultra. 



Sipunculus granulatus Pourtales: in Proceed. Amer. Assoc. Adv. Sc. V. 



Meet. 1881. 41. 

 Habitaculum. Florida (Pourtales). 



111. DENDROSTOMUM GRUBE et OERSTED. 



Corpus utriculare, verrucosum. Proboscis protractilis, verrucosa 

 et aculeata. Os in proboscidis apice. Tentacula oris trifoliata, retra- 

 ctilia, trunco brevi, foliolis pinnatis. Anus dorsalis antrorsum situs. 

 Maricola. 



Genus, structura interna licet ignota, tarnen tentaculorum oris forma 

 a praecedente satis differre videtur. 



I. Dendrostomum alutaceum GRUBE et OERSTED. 



Co?yusbveve, retrorsum increscens s. subelavatum, extrcmitate 

 postica longe acuminata mucronatum, annulato -verrucosum verrucis 

 granularibus, laete roseum. Proboscis verrucis minutissimis obtusis 

 aculeisque paulo majoribus flavis multo rarioribus obsita, alutacea. 

 Tentacula oris 5, os Corona simplici cingentia, trifoliata, pinnulis 

 foliolorum utrinque ad 12, angustissimis. Longit. total, fere 2"; coro. 

 circa 1", probosc. 3 / 4 ", tentaculorum i/ 4 ". 



Dendrostomum alutaceum Grube: Annul. Oerstediana: in Natürhist. 

 Foren. Vidensk. Meddolelser 18Ö8. 14. 



Habitaculum. St. Croix (Oersted). 



50* 



