600 Lembos, Lemboides 



L. fuegiensis (Dana) 1853 & 55 Gammarus f., J. D. Dana in: U. S. expl. Exp.^ 

 f. 13 II p. 954; t. 65 f. 8a — h | 1862 Moera f., M. fuegeensis, Bäte, Cat. Amphip. Brit. 

 Mus., p. 194 t.35 f. 4 11893 Microdeutojms Opart.)?, A. DellaValle in: F. El. Neapel,. 

 V. 20 p. 425. 



L. 7 mm. 



South-Pacific? (Feejee Islands). 



L. tenuis (Dana) 1852 Gammarus t., J. D. Dana in: P. Amer. Ac, v.2 p. 211 { 

 1853 & 55 G.t, J.D.Dana in: U. S. expl. Exp., u 13ii p. 950; t. 65 f. 5 a— c | 1862 

 Microdentopus t., Bäte, Cat. Amphip. Brit. Mus., p. 165 t. 30 f. 4 | 1893 Microdeutojms t.,. 

 A. Della Valle in: F. Fl. Neapel, v. 20 p. 420 [ 1894 Autonoe? t, G. O. Sars, Crust. Norway, 

 V. 1 p. 547 j 1895 Lembos? t., T. Stebbing in: Ann. nat. Hist., ser. 6 v. 16 p. 207. 



L. 6 mm. 



Sooloo Sea. Depth 12 m. 



5. Gen. Lemboides Stebb. 



1895 Lemboides (Sp. un. : L. afer), T. Stebbing in : Ann. nat. Hist., ser. 6 v. 16 p. 209. 



Like Lembos (p. 594), but accessoiy flagellum of antenaa 1 shorter thaa 

 3^ Joint of peduncle, and iu gnathopod 1 of the d the 5*^ Joint is much 

 broader and longer than the 6*^, though not dentate or opposable to the finger.. 



2 species. 



Synopsis of species: 



Antenna 1, 2<i Joint not longer than Ist 1. L. afer . . . p. 600 



Antenna 1, 2d Joint much longer than Ist 2. L. australis . p. 601 



1. L. afer Stebb. 1895 L. a., T. Stebbing in: Ann. nat. Hist., ser. 6 v.lQ p.209 

 t. 9 a, 10. 



Side-plate 1 iu d broader but rather less deep than the foUowing, not 

 acuminate; no side-plate very large. Pleon segment 3 large, postero-lateral 

 Corners rounded. Eyes small, dark. Antenna 1 about Ys ^s long as body, 

 1^* Joint slightly longer than 2^; 3*^ about Vs as long as 2*^; flagellum 

 rather longer than peduncle, about 15-jointed; accessory flagellum not as; 

 long as 1^* Joint of primary, with 2 joints, 2'^ minute. Antenna 2 shorter, 

 antepenultimate Joint of peduncle as long as broad, with expausion of lower 

 edge, ultimate Joint of peduncle shorter and much narrower than penultimate, 

 longer than the 3- or 4-jointed flagellum. Gnathopod 1 in d, 4*ii Joint 

 acute, 5*^ much broader than 2*^ and as long, distal margin straight, not 

 covered by base of 6*^ Joint, of which the palm is rather oblique, having a 

 broad denticulate cavity between a strong tooth near the finger-hinge and, 

 a smaller one near to a still smaller defining tooth, against which the serrate 

 finger impinges. Gnathopod 2 in d more slender, otherwise rather like- 

 gnathopod 1, but 5*^ Joint not broader than 2^; %^^ shorter and rather 

 narrower than 5*^; both plumose; the palm forming a small cavity between- 

 a tooth near the fiuger-hinge and the defining point, which the rather short 

 finger just reaches. Gnathopod 1 in 9 , b^^ Joint densely setose on bind 

 margin, only a little longer and broader than the 6*^, which is setose on 

 both margins and has a short palm, overlapped by the serrate finger. Gnatho- 

 pod 2 in 2 with long plumose setae along the front, 5*^ Joint distally widened,. 

 6th longer, narrow, the small finger fitting the short convex palm. Peraeo- 

 pod 1, 4*^ Joint plumose on front margin, more so than in peraeopod 2. 

 Uropods 1 — 3, outer ramus shorter than inner; inner ramus of uropod 2' 



