SCIIIZOI'ODA. '-".I 



Museum, informs me that only five spines are present on the lateral margins, so that 

 the armature of the telson of P. fmrni approximates closelv to that of P. belgicce. 



The only other species of Pseudomma having smooth ocular lamina- is 

 P. australe, G. 0. Sar* (1885), from Bass Straits, Australia. The vastly different 

 form of the antennal scale in the latter, however, abundantly distinguishes it from 

 /'. fi't'/icce. 



Besides the single ' Discovery ' specimen, this species is also known from the 

 ' Belgica' collections, and has been described by Hansen in ^\IS. under the name which 

 is here used. It is possible that the mutilated specimen noted by Bars (1885, p. I'.n ) 

 from 1675 fathoms in the Antarctic Ocean may have belonged to this species rather 

 than to P. air*!. Sars notes that it was much larger than the latter. 



( !f)ius I).M i vi.AMDLVors. Holt and Tattersall. 



/ti/r/i/litmd/i/iijix. Holt and TattiTsall, I'.iml (1). 

 />,i,-li///r//t/ii-<i/>x, Illiir, I'.HK;, linn Holt and Tattursall, l'.M5. 

 ? Amlli/ops (///), Ohliu, i:i"l. 

 Dactylamblyops, Tattersall, I'.lnT. 



This genus was established for the reception of the single rather mutilated specimen 

 of D. /iiiili/xi'/i! in the present collection. Since the publication of the preliminary 

 notice of the 'Discovery 1 Schizopoda, however, two closelv allied species have Keen 

 discovered off the west coast of Ireland (Tattersall, 1907). A clearer idea of the 

 exact relationships of the genus has thus been gained, and while the species referred 

 thereto appear, in the present state of our knowledge, to form a natural group, it is 

 undeniably very nearly allied to Dactylerytkrops, Holt and Tattersall (1905), to 

 which genus, indeed, the present species was referred by Illig (1906). 



The definition of the genus given by Holt and Tattersall, 1900 (1), may therefore 

 be amended as follows : 



DACTYLAMBLYOPS, Holt and Tattt-rsall. 



Characters generally as in Airiblyops, G. 0. Sars, except : 



/v/.'.v placed close together, but not contiguous, more or less pyriform in shape, 

 furnished with distinct and definite peduncles ; visual elements imperfectly developed. 

 numerous, reaching to the surface of the eye, and probably directly functional as 

 organs of sight; outer distal corner rounded, and not produced into a digitifonn 

 process ; a short blunt process always present on the inner and upper surface. 



Second thoracic limb* with the eiidopods not noticeably short, but well developed, 

 and considerably longer than the endopods of the first thoracic limbs. 



Telson not very long, triangular in shape, the distal parts of its margins armed 

 with more or fewer spines ; median set?e absent. 



Type species, D. hodgsoni, Holt and Tattersall. 



VOL. IV. II 



