RECENT OPHTORANS. 325 



1240. O. DODERLEINI (Koehler), 1900. Bull. Acad. Belgique, p. 819. Belgica Ech. et Oph., 



p. 19, pi. 5, f. 34-36 (Ophioglypha). West Antarctica, 264-278 fms. 



1241. O. FIGURATA (Koehler), 1907. Zool. anz., 32, p. 145. 1908. Trans. Roy. Soc. Edinburgh, 



46, p. 587, pi. 9, f. 83, 84 (Ophioglypha). Near South Orkney Islands, 1775 fms. 



1242. O. INNOXIA (Koehler), 1906. Exp. Ant. Franc. Ech., p. 27, pi. 1, f. 7, 8 {Ophioglypha). 



.Antarctic Ocean. 



1243. 0. INTEGRA (Koehler), 1907. Zool. anz., 32, p. 145. 1908. Trans. Roy. soc. Edinburgh, 



46, p. 584, pi. 8, f. 79, 80 (Ophioglypha). Near South Orkney Islands, 1775 fms. 



1244. 0. JEJUNA (Ltman), 1878. BuU. M. C. Z., B, p. 78, pi. 2, f. 55, 56 (Ophioglypha). Off Tristan 



d'Acunha, 500 fms. 



1245. O. KOEHLERI Bell, 1908. Nat. Ant. exp. nat. hist., 4, Ech., p. 11. East Antarctica, 245 fms. 



1246. O. KOFOIDI McClendon, 1909. Univ. Cal. Publ. zool., 6, p. 38, pi. 2, f. 8, 9. California: 



off La Jolla, SO fms. 



1247. 0. LENTICULARIS (Koehler), 1907. Zool. anz., 32, p. 145. 1908. Trans. Roy. soc. 



Edinburgh, 46, p. 585, pi. 10, f. 90, 91 (Ophioglypha). Antarctic Ocean, 2103 fms. 



1248. O. MERIDIONALIS (Lyman), 1879. BuU. M. C. Z., 6, p. 56, pi. 16, f. 447-^49 (Ophioglypha). 



Off Rio de la Plata, 600 fms. 



1249. 0. OSSICULATA (Koehler), 1907. Zool. anz., 32, p. 146. 1908. Trans. Roy. soc. Edinburgh, 



46, p. 588, pi. 9, f. 85-87 (Ophioglypha). Antarctic Ocean, 1410 fms. 



1250. O. PALLIATA (Lyman), 1878. BuU. M. C. Z., 5, p. 69, pi. 4, f. 98-100 (Ophioglypha). Off 



New South Wales, 400-1200 fms. 



1251. O. PODICA (Koehler), 1910. Rec. Indian mus., 5, p. 83, pi. 5, f. 1, 2 (Ophioglypha). Arabian 



Peninsula: off Oman, 492 fms. 



HoMALOPHiuEA ^ gen. nov. 



Type-species: Ophioglypha irwrnala Lyman, 1878. BuU. M. C. Z., 5, p. 97. 



Disk flat or slightly elevated, covered with scales, of which at least a few 

 (often the six primaries) tend to be circular; the larger scales are not surrounded 

 by belts of smaller ones, though they are mingled with them. Arm-comb reduced 

 to series or a group of granules on the upper end of the genital plate and on the 

 basal arm-joint; it is often feebly developed and may be wanting. Tentacle- 

 pores small and confined to two or three basal arm-joints. Second oral tentacles 

 opening entirely outside of mouth slit, guarded by several scales on each side. 

 Arm-spines few and minute. 



This is a well-characterized and homogeneous group, resembling Ophio- 

 musium in the reduction of the tentacle-pores and their restriction to the basal 

 arm-joints but easily distinguished from that genus by the second pair of oral 

 tentacles which are entirely outside the mouth slit, and guarded by a number 

 of tentacle-scales as in Ophiura. It is probable that when a critical revision 

 of the latter genus is made a number of additional species will be placed in the 

 present group. 



' 6/imX6s, level, flat + 6<t>iiiJCL. 



