1868.] DR. Vi. BAIRD ON THE GEPHYREA. 79 



3. SiPUNCULUS GIGAS. 



Sipunculus gigas, Quatrefagcs, Hist. Nat. Ann. ii. p. 514, 1865. 



Hab. Coast of Brittany (Quaf refuges). 



I suspect this is only a variety of Sipunculus nudus. The chief 

 difference seems to consist in the oral cirri, which, according to 

 Quatrefages, are " quasi conglobati," or, as he elsewhere describes 

 them, something like cauUflowers. This, however, he says may be 

 the action of the spirits in which the specimen has been preserved. 



4. Sipunculus edulis. 



Lumbricus edulis, Pallas, Spic. Zool. torn. i. fasc. x. p. II, t. 1. 

 f. 7, 1774. 



Sipunculus edulis, Lamarck, An. s. Vert. 1st edit. iii. p. 79, 1816 ; 

 2nd edit. iii. p. 469, 1840; Blainville, Diet. Sc. Nat. art. Sipunculus, 

 1827, Atlas, t. 31. f. 4 ; Cuvier, Regn.Anim.iii. p. 243, 1830; Gue'rin 

 Icon. Regn. An. Zooph. p. 8, pi. 5. f. 3 (copied from Pallas ?) ; 

 Griffith, An. Kingd. xii. Zooph. t. 12. f. 3 (copied from Guerin), 

 1834 ; Diesing, Syst. Helminth, ii. p. 61, 1851, Re vis. der Rhyngod. 

 /. c. 757, 1851) ; Quatrefages, Hist. Nat. Annel. ii. p. 615, 1865. 



Hab. Java (Pallas); Siam (Moukot). B.M. 



5. Sipunculus indicus. 



Sipunculus indicus, Peters, Miiller's Archiv fiir Anat. &c. 1850, 

 p. 385, t. 4. f. A-H* ; Diesing, Syst. Helminth, ii. p. 55.5, 1851, 

 Revis. der Rhyngod. in I. c. p. 757, 1859 ; Keferstein, Beitr. z. Anat. 

 der Sipunc. wj /. c. p. 196, 1865; Quatrefages, Hist. Nat. Annel. 

 ii. p. 615, 1865. 



Hab. Coast of Mozambique (Peters). 



6. Sipunculus rufofimbriatus. 



Sipunculus rufofimbriatus, Blanchard, Ann. Sc. Nat. 3rd ser. torn. 

 xii. p. 56, 1849 ; Cuv. Regn. An. edit. Crochard, Zoophytes, t. 22. 

 f. 1, la; Diesing, Syst. Helminth. ii. p. 62, 1851 ; Revis. der Rhyngod. 

 I. c. p. 757, 1859 ; Quatrefages, Hist. Nat. Annel. ii. p. 616, 1865. 



Hab. Nice (Blanchard) . 



7. Sipunculus echinorhynchus. 



Siphunculus echinorhynchus, Delle Chiaje, Memor. sulla Storia e 

 Notom. degli Animal, s. Vertebre, tom. i. i)p. 124 & 133, 134, t. 10. 

 f.8-11, 1823. 



Sipunculus echinorhynchus, Diesing, Syst. Helminth, ii. p. 60, 1851 ; 

 Dujardin, in Lamk. An. s. Vert. 2nd edit. tom. iii. p. 469 ; Quatre- 

 fages, Hist. Nat. Annel. ii. p. 616, 1865t. 



* Peters's figure of this species represents the tentacular membrane as being 

 divided into a considerable number (eight according to Diesing) of lacinire or 

 oral cirri, which appear again to be divided into others, amounting, according 

 to Diesing, to from 40 to 60. This structiu-e would appear to be almost sufficient 

 to refer this species to another genus, allied to the Dendrostomwn of Grube. 



t Quatrefages says it is likely that this species may turn out to be only the 

 young of S. nndiiK. The oral cirri, liowevcr, are very different from tliose of 

 that species. 



