104 DR. W. BAIRD ON THE GEPHYREA. [Feb. 13, 



{Anus terminalis.) 

 Genus 1. Loxosiphon. 



Loxosiphon, Diesing, 1851 ; Quatrefages, 1865. 

 Sternaspis, sp., Chamisso & Eysenhardt, 

 Sipunculus, sp., Blainville. 



1. Loxosiphon elegans. 



Sternaspis elegans, Chamisso & Eysenhardt, Nov. Act. Nat. Cur. 

 torn. X. p. 351, t. 24. f. 5 a-e, 1820. 



Sipunculus elegans, Blainv. Diet. Sc. Nat. art. Siponcle, Atlas, 

 t. 26. f. 2 (copied from Cham. & Eysenh.), 1828. 



Loxosiphon elegans, Diesing, Syst. Helm. ii. p. 70, 1851 ; Revis. 

 Rhyng. I.e. p. 769, 1859 ; Quatrefages, Hist. Ann. ii. p. 605, 1865. 



Hub. Island of Radack, Pacific Ocean (Chamisso). 



2. Loxosiphon aspergilltjm. 



Loxosipho7i aspergillum, Quatrefages, Hist. Nat. Annel. ii. p. 605, 

 t. 20. f. 20, 1865. 



Hab. Isle of France {Quatrefages). 



Genus 2. Diesingia. 

 Diesingia, Quatrefages, ii. p. 606, 1865. 



1. Diesingia chamissoi. 



Diesingia chamissoi, Quatrefages, Hist. Nat. Annel. ii. p. 606, 

 t. 20. f. 22, 1865. 

 Hab. ? 



2. Diesingia ctjptjlifera. 



Diesingia cupuHfera, Quatrefages, I. c. p. 607, t. 20. f. 21, 1865. 

 Hab. 1 1ndian seas {Quay ^- Gaimard fide Quatrefages). 



Family IV. Priapulid^. 



Priapulidea, Diesing, 1851 & 1859. 

 Priapulea, Quatrefages, I.e. p. 600, 1865. 



Priapulacea, Keferstein, Nach. Gesellsch. Wissensch. Gcittine. 

 1865. 



Genus 1. Priapulus. 



Priapulus, Lamarck, 1816; Blainville, 1828; Cuvier, 1830; Ed- 

 wards; Forbes, 1841 ; Diesing, 1851 & 1859 ; Ehlers, 1862; Quatre- 

 fages, 1865, &c. 



Priapus, Linnaeus. 



Holothuria, sp., Miiller, Linnaeus. 



1. Priapulus CAUDATus. 



Holothuria priapus, Linneeus, Syst. Nat. 12th ed. p. 1091 (syno- 

 nym, et habitat partim exclusis), 1/66; Gmelin, Linn. Syst. Nat. 



