04 " ENDEAVOUR SCIENTIFIC RESULTS. 



succeeding plates wider than long, more or less tetragonal, 

 broadly in contact. Beyond the eighth or ninth joints the 

 under arm plates are nearly or quite separated from each 

 other, pentagonal with proximal angle, much wider than 

 long ; they keep this form to the end of the arm. Side arm 

 plates rather large, but not conspicuous, well separated at 

 base of arm, but broadly in contact distally ; each carries 3 

 small arm spines, a minute, bluntly pointed, peg-like one on 

 upper distal corner of plate (often wanting distally) and a pair 

 of somewhat larger, more flattened spines, close to the lower 

 distal corner of plate ; except on one or two basal joints, 

 none of the arm spines are as long as one-third the length of 

 the side arm plates. Tentacle-pores rather larger ; the basal 

 ones have 3 or 4 scales on each side, but the number soon 

 dwindles to one on the under arm plate and one on the side 

 arm plate and near the middle of the arm, the former dis- 

 appears. Colour (dry), yellowish-white. 



This rather handsome species is well characterised by the 

 peculiar oral papillae, the arrangement of the arm spines, the 

 shape of the papillae in the arm-comb and the arrangement of 

 the disk plates. In all these particulars, as well as in the 

 shape of the under arm -plates it differs from A. ornata, which 

 is one of its near alhes, but except in the arrangement of the 

 disk scales it is no nearer to A. undata, which is one of its 

 nearest allies geographically. Its longer arms and very 

 different arm-comb will distinguish it at once from A. cteno- 

 phora (H. L. Clark) taken by the " Thetis " off the coast of 

 New South Wales. 



Loc. — East of Babel Island, Bass Strait, 60-80 fathoms. 



Family OPHIODERMATrDiE. 



Grenus Pectinuba, Forbes. 

 Pectestura dyscrita, H. L. Clark. 



Pectinura dyscrita, H. L. Clark, Mem. Austr. Mus., iv., 11, 

 1909, p. 534. 



This series of specimens has led me to question very much 

 whether P. dyscrita can properly be distinguished from 

 P. anchista, the Japanese species. But after comparing 

 specimens of the same size, I have decided not to unite them 

 at present. The arm spines in P. anchista are thinner, flatter 

 and more pointed than in P. dyscrita. If similar specimens 

 of Pectinura should hereafter be found in the Phihppines or 

 in the East Indies, it would probably result in including the 



