284 Annul* of the. South African Museum. 



80 fathoms. 2 $ , 3 ? ? ; Kobben Island, Table Bay. 1 juv. ; 

 Urakoniaas Eiver mouth NW. by W. i W., distant 5 miles (Natal). 

 40 fathoms. 4 ; Walker Point NE. by N. i K, distant 7 miles 

 (off Knysna). 47 fathoms. 1 ? ; s.s. " Pieter Faure." 17/3/02, 

 28/10/97, 31/12/00, and 11/10/00 respectively. Sea Point, Cape Town. 

 26/2/14. 2 (J <J (K.H.B.) (S.A.M. Nos. A87-A89, A3860, and 

 A2951.) 



GEN. OKTHOPROTELLA Mayer. 

 1903. Ortlioprotella Mayer, Siboga Exp. vol. 34, p. 35. 



ORTHOPROTELLA MAYERI u. sp. 



1903. OrtJw2>rotelIa spec. Mayer, I.e. p. 36, pi. 1, figs. 25, 26, pi. 6, 



figs. 43, 44, 46, pi. 9, fig. 15. 



These specimens agree with the form described and figured by 

 Mayer, but the largest is more than twice as large as any this author 

 saw. Mayer regarded it as a variety of 0. anstralis (Haswell), but 

 with a certain hesitation. Seeing that a very good and apparently 

 constant distinguishing feature is to be found in the 2nd gnathopod 

 of the cf , and that it inhabits regions as widely separated as Sydney, 

 Singapore and South Africa, it seems to merit specific rank. 



One of the specimens (that from G-lendower Beacon) has a single 

 median spine on the 2nd peraeou segment above the 2nd gnathopods, 

 but the rest of the specimens are devoid of dorsal spines or tubercles. 

 All have a lateral spine on the 2nd and 3rd segments. Segments 6 and 

 7 not fused. 



First antenna with flagelluni of 20-30 joints ; basal joint of 2nd 

 antenna distinctly, and rather slenderly, produced. 



Second gnathopod as figured by Mayer, but the tubercle on the 

 anterior margin of hand more prominent and the apical angle more 

 produced and acute ; in the largest specimen the shape of the hand is 

 more oblong, the inferior margin is distinctly concave and subparallel 

 with the anterior margin ; the venom-tooth is quite proximal, and there 

 is a little notch between it and the inferior margin ; inferior margin 

 sparingly setose ; the two teeth near the hinge would be better described 

 as follows : a single triangular tooth with a narrow parallel-sided slit 

 cut in the apex and extending nearly to the basal line ; finger moderately 

 slender and curved, reaching to the venom-tooth, its inner margin finely 

 and regularly crenulate. 



Peraeopods 1 and 2 half the length of the branchial lamellae. 

 1- jointed, narrow, apically setose. 



