386 Miscellaneous. 



5. Echinaster scrobiculatus. — 5-rayed ; proportion of radii 1:3; 

 diameter of disk 4*5 millim. ; length of arms 5-5 millim. Back 

 rather flat, strongly reticulate, covered with short isolated spines 

 irregularly arranged. In each mesh a tentacle-pore. Anal aper- 

 ture subcentral, surrounded by an oblong ring of fine spines ; madre- 

 poric plate oblong, near the anal aperture. Dorsal marginal spines 

 obtuse and short ; ventrals long and more acute. Ambulacra! 

 grooves narrow, with three rows of toothed spines, the inner row 

 longest. Colour yellowish red. From Station 195 ; H". lafc. 70° 55', 

 E. long. 18° 38', at 107 fathoms, gravel and clay. Temp. 5°-l C. 

 (=41°-2F.). 



6. Bathyhiaster (g. n.) pallidus. — For their Astropecten pallidiis 

 (Nyt Mag. Bel. xxiii. p. 62) the authors establish the new genus 

 Bathyhiaster, characterized as follows : — " Body depressed, 5-armed, 

 with remarkably broad ambulacral grooves, upon the margins of 

 which there are long pedunculate pedicellariae. Interbrachial 

 space broad, closely set with sessile pedicellarise. Dorsal surface 

 clothed with paxillae ; its disk, as well as the middle part of the 

 arms, without tentacle-pores. Dorsal dermal skeleton formed, on the 

 disk and middle part of the arms, by round closely imbricated calca- 

 reous plates, in the lateral parts of the arms by stelliform imbricated 

 plates. ISo anus. Ambulacral pillars," 



7. Ihjaster mirabilis, g. et sp. n. — The character of the genus is 

 given as follows : — " Body 5-armed. Dorsal surface clothed with 

 paxillae. From the centre of the back rises a long cylindrical ap- 

 pendage clothed with spines. No anus. Two rows of conically 

 pointed ambulacral feet." The species upon which this new genus 

 is founded is a small starfish measuring 30 millim. across, with a 

 disk 7 millim. in diameter. The proportion of the radii is 1 : 2\. 

 The paxilke covering the back are of a round or oblong form, with 

 from 3 to 6 granules and sometimes a central granule. The madre- 

 poric plate is oblong, and placed close to the margin of an inter- 

 brachial angle. The arms have at their extremities three long 

 conically pointed spines, one attached dorsally and two laterally ; 

 they have at the base a small, round, hollow articular surface. The 

 arms have rather broad marginal plates on both surfaces. Colour 

 pale yellowish red with yellowish-white ambulacral feet. A single 

 specimen was obtained from Station 87; N. lat. 64° 2', E. long. 

 5° 35', on a clay bottom, at 498 fathoms. Temp. 1°-1 C. 

 (=30° F.). 



From the centre of the dorsal surface of the disk there rises a 

 conical process, 8 millim. long and about 2 millim. in thickness at 

 the base, tapering to a thickness of about 05 millim. at the free 

 extremity, which is rounded off This peculiar process feels solid 

 throughout the greater part of its length, and only the wide basal 

 part seems to be hollow. It is entirely clothed with paxilke, which 

 are distant from each other, and are placed in transverse row r s, 

 passing in a sort of spiral from the base to the apex, where there 

 is a very small naked point. 



With regard to this remarkable starfish, the authors remark that 



