414 Annals of the South African Museum. 



DYNAMENELLA AUSTRALIS, Eichardson. 

 (Plate XXXV. E.) 



1906. Dynamenella australis, Eichardson. Proc. U.S. Nat. Mus. 

 vol. 31 (1907), p. 15, fig. 19. 



To Miss Eichardson's excellent description the following details 

 may be added : Epistome intermediate between that of D. scabricula 

 and D. kraussi, main and secondary cutting-edges of the mandibles 

 tridentate, ca. 8 spines in the spine-row, the smaller unguis on 

 peraeopods distinctly and deeply bifid, the fur on inner margins 

 of 3rd-6th joints thick but short, inner apex of peduncle of lst-3rd 

 pleopods with 6 hooked setae, outer ramus of pleopod 1 with an 

 outstanding spine on outer margin, male stylet on pleopod 2 a little 

 longer than ramus, slightly enlarged subapically as in D. scabricula, 

 the whole body minutely granular and setose. 



Length: 9 mm. ; breadth: 4'5 mm. 



Colour : " The body ... is marked with patches of black over 

 a light surface. The abdomen is dark, as well as the head, and 

 there is a broad stripe of the darker colour on the inner uropod " 

 (Eichardson). In living specimens the colouration is as follows : 

 Whitish with the lateral margins of the peraeon, the anterior margin 

 of the head, and the antennae reddish, on peraeon segments 4 and 5 

 two dark red oblique stripes diverging posteriorly, and on segments 

 6 and 7 two similar stripes or patches converging posteriorly, thus 

 forming a diamond-shaped mark on segments 4-7, the tubercles and 

 the apices of telson and uropods pinky red. 



Locality : Sea Point, near Cape Town. 28/12/13. (K.H.B.) 

 2 $ 3 . Hout Bay. 11/2/14. (K.H.B.) 1 J . (S.A.M. Nos. 

 A2666 and A2G70.) 



Types in the U.S. National Museum. 



DYNAMENELLA BICOLOR, n. sp. 

 (Plate XXXVI. A.) 



Body very finely shagreened, glabrous. Peraeon with a transverse 

 row of eight low tubercles on each segment, becoming obsolete 

 anteriorly, but quite distinct on segments 5-7. Pleon with two low 

 tubercles on 4th segment, telson with a transverse row of 4 tubercles 

 near base, the two inner ones being smaller than the outer, beyond 

 these 2 large submedian tubercles, a large tubercle just anterior to, 

 and partly concealing in dorsal view the terminal notch, which is 

 narrow and deep, slightly wider anteriorly than posteriorly. 



First antenna reaching to posterior angle of 1st peraeon segment, 

 flagellum 11-jointed. 



