io8 DISCOVERY REPORTS 



Distribution. Strait of Magellan in 300-0 m. A. kempt is known only from the west of Ireland 

 in depths of 1200- 1600 m. With no intermediate records it would be an astonishing geographical 

 range for one species to have, if it also occurred as far south as the Strait of Magellan. 



Fig. 23. Amblyops sp. near kempi. A, anterior end of immature male in dorsal view, x 28; B, telson and left uropod 



in dorsal view, x 28. 



Genus Amblyopsoides gen.n. 



Definition. Form of body robust. Carapace deeply produced laterally with ventral margins sin- 

 uous; anterior margin feebly convex or produced into a very short obtusely angled rostral plate; 

 posterior margin emarginate leaving the last two or three thoracic somites exposed in dorsal view. 

 Antenmrfar peduncle short and robust; outer lateral margin of first segment only slightly produced. 

 Antennal scale oval with the apex produced beyond the spine marking the distal end of the unarmed 

 outer margin to a distance equal to nearly half the total length of the scale ; no secondary tooth on the 

 inner face of the terminal tooth of the outer margin ; small distal suture may be present. Antennal 

 peduncle three-segmented with the segments all in the same plane. Eyes rudimentary, in the form of 

 two large, quadrangular, separate, immovable plates without visual elements; anterior and lateral 

 regions smooth or adorned with minute spinules; well-marked ocular papilla present near anterior 

 margin in the median region. Pleopods in the male as in Amblyops; in the female, reduced to unseg- 

 mented plates which are larger than those usually found in Amblyops. Uropods with exopod con- 

 siderably longer than endopod ; single spine present on inner margin of endopod in the region of the 

 statocyst. Telson trapeziform with posterior margin slightly emarginate in median line ; lateral margins 

 and apex armed with a close row of spines, which are evenly graduated and not arranged in series ; 

 apex armed with two or three pairs of spines and a pair of median plumose setae. 



Remarks. Three species are at present included in this genus, A. crozetii ((W.-Suhm) G. O. Sars) 

 which has been recorded from near the Crozet Islands in the southern Indian Ocean, A. ohlinii 

 (W. M. Tattersall) from near the mouth of the Delaware River and A. obtusa sp.n. from the waters 

 of Patagonia. 



Amblyopsoides obtusa gen.n., sp.n. 



Occurrence: (Fig- 24A-J) I 



St. WS 748. 16. ix. 31 (night). Strait of Magellan, 30o(-o) m., 1 $, 20-8 mm. 



St. WS 839. 5. ii. 31 (night). Patagonian Shelf, south-west of Falkland Is., 503-534 m., 4 £<$, largest 20 mm.; 

 8 $$, largest 22-2 mm., many fragments. Types. 



Description. General form long with a firm robust abdomen. Carapace deeply emarginate 

 posteriorly, leaving the whole of the last two thoracic somites exposed in dorsal view ; cervical sulcus 



