522 REPORT ON ZOOLOGY, MDCCCXLIV. 



points, each of which represents a pointed cone directed 

 backwards. The neck and body of the animal appear rough, 

 from small verrucose elevations, and at the extremity of the 



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cylindrical, thick body, several small clavate appendages 

 project. Rathke, who found this Sipunculus on the coast of 

 Norway, regards it as allied to Leuckart's Phascolosoma 

 lonyicolle, in which he is undoubtedly right ; at all events, 

 the animal, whose figure is besides extraordinarily mutable, 

 belongs to the genus Phascolosoma ; if not, perhaps, to 

 Phascol. granulatum, Leuck. Another animal also allied to 

 Phas. granulatum has been described by J. Miiller under 

 the name of Phascolosoma scutatum. It is distinguished by 

 two sharply-defined, hard, coriaceous discs, one of which is 

 placed at the point where the body is continuous with the 

 proboscis, but the other at the posterior extremity of the 

 body. The Reporter here adds, that the Zoological Collection 

 in Erlangen possesses a Phascolomosa scutatum, found by 

 Will near Trieste, which is inserted in a very firm cal- 

 careous tube of uniform width, and open above and below, 

 into which the animal has the power of entirely retracting 

 itself, when it certainly closes the orifices of the tube with its 

 two discs. Miiller moreover remarks, perfectly correctly, 

 that Phascolosoma granulatum varies in many ways in form 

 and the condition of the rough surface of its integument, 

 and that Ascosoma Blumenbachii Leuck., Sipunculus verru- 

 cosus Grub., Sip. tuberculatus Blainv., S. tigrinus and flavus 

 Riss. ; as also Sip. Bernhardus and Johnstoni, Forbes, proba- 

 bly belong to Phascolosoma granulatum. The Reporter must, 

 in addition, remark, that Phascolosoma longicolle, Leuck., is 

 also probably to be referred to the same species. According 

 to Rathke's researches (Nov. Acta Nat. Curios. 1. c. p. 136), 

 Holothuria inhcerens, Miiller has no sucker (fusschen), but 

 anchor-shaped and retiform calcareous corpuscles in its 

 verrucose integument, and is, consequently, a Synapta. A 

 small, pisiform Holothuria flava, found by Rathke near 

 Christiaussund, is furnished at the mouth with ten teutacula, 

 and presents on the verrucose surface of the body five shallow 



