278 THE VOYAGE OF H.M.S. CHALLENGER. 



beyond two, whereof the inner and larger is cylindrical, with a somewhat swollen, rough 

 end, and attains, about two-thu-ds out on arm, a length of I'S mm. At the tip the 

 lower scale takes on the form of a flattened compound hook, with four teeth curved on its 

 edge. Colour in alcohol, very pale brown. 



Station 170.— July 14, 1874 ; lat. 29° 55' S. and lat. 29° 45' S., long. 178° 14' W. 

 and long. 178° 11' W. ; 520 fathoms. 



Species of Astroschema not herein described. 

 Astroschema oligactes, Ltk. (PL XLIV. figs. 1-5). 



Astroschema oligactes, Vid. Meddel., p. 16, 1856; Addit. ad Hist, part 2, p. 1.55, pi. v. fig. 3; 

 Duj. & Hupe, Hist. Nat. ZoopL Echin., 1862, p. 297 ; Lym., 111. Cat. Mus. Comp. 

 Zool., No. viii., part 2, p. 26. 

 Aderias oligactes, Pallas, Acad. Cses. Leop. Nova Acta, vol. ii. p. 239, pi. vi. fig. 23. 

 West Indies ; 69 to 288 fathoms. 



Astroschema arenosxim, Lym., Bull. Mus. Comp. Zool., vol. v., part 9, p. 235, pi. iii. 



. 62-64, 1878. 



West Indies ; 805 fathoms. 



Astroschema tenue, Lym., 111. Cat. Mus. Comp. Zool., No. viii., part 2, p. 26, 1875. 

 Barbadoes; 100 fathoms. 



Astroschema Iwve, Lym., 111. Cat. Mus. Comp. Zool., No. viii., part 2, p. 26, 1875 ; 

 Bull. Mus. Comp. Zool., vol. v., part 9, p. 236. 



Asteromorpha Icevis, Lym., Ann. Sci. Nat., i>. 3, 1872. 

 Guadeloupe, West Indies. 



Astroschema steenstmpii, ljyja.,\\\. Cat. Mus. Comp. Zool., No. viii., pt. 2, p. 26, 1875. 



Aster oschema Rousseaui, Michelin, Notes sur I'He de la Ri^union, Annex A, p. 6, 1863. (No 



proper description.) 

 Asteromorplia Steenstrujyii , Ltk., Addit. ad Hist., part 3, p. 62, 1869 ; Lym., Ann. des Sci. 



Nat., p. 4, 1872. 



He de la Eeunion. 



Astroschema sidcatum, Ljn., Dr. Goes, Oph. Of. Kong. Akad., p. 637, 1871 ; Lym., 

 111. Cat. Mus. Comp. Zool., No. viii., part 2, p. 26. 

 AnguiUa, West Indies ; 200 to 320 fathoms. 



Astroschema intectiim, Lym., Bull. Mus. Comp. Zool., vol. v., part 9, p. 235, pi. iii. 

 figs. 59-61, 1878. 



Ofi" Havana ; 175 fathoms. 



