632 " THETIS " SCIENTIFIC RESULTS. 



mentary pleopods. The coalescence of the sixth and seventh 

 segments of the peraeon is as advanced as in Protella. 



ORTHOPROTELLA AUSTEALIS (Hastvell). 

 Station 28. 



Frotella australis, Haswell, Proc. Linn. Soc. N. S.Wales, iv., 1880^ 



p. 276, pi. xii., fig. 4, a, b. 

 Protella australis, Haswell, Proc. Linn. Soc. N. S.Wales, ix., 1885^ 



p. 997, pi. xlix., figs. 2-4. 

 Orthoprotella australis, Mayer, Siboga-Expeditie, xxxiv., 1903, 



p. 35, pi. i., figs. 23-26, pi. vi., figs. 43-49, pi. ix., tigs. 14, 



37, 57, 58. 



Under the last reference will be found a clue to earlier discus- 

 sions concerning this species and all the available information 

 about it. In the "Thetis" specimen, a male, the flagella of the 

 upper antennae are broken, and the last three pairs of peraeopods 

 are missing. A second specimen, only 3*5 mm. long, dorsally 

 smooth, has six joints on the somewhat imperfect flagellum of an 

 upper antenna, three and two respectively on the flagella of the 

 lower pair ; one hind peraeopod (fourth or fifth, being now 

 detached) has two spines on proximal prominence of sixth joint,, 

 with a succession of six spinules along concave margin. 



Locality. — Ofi" Manning River. 



