AMPHIPODA — STEBBING. 581 



tuberculation of the palm in accord with Haswell's description. 

 The postero-lateral angle of the tliird pleon segment is without 

 sinus. Yet a specimen sent me some years ago under this name 

 from the Australian Museum had this sinus, and so had the 

 "Thetis" specimen from off Manning River. 



Length of specimen from off Wollongong 17 mm. 



Localities. — Oflf Manning iliverj off Coogee; and off Wollongon<y, 

 55-56 fathoms. 



Genus PARALEUCOTHOE, Stebbing. 



Paraleucothoe, Stebbing, Ann. Mag. Nat. Hist., (7), iv , 1899 p 

 208. ' ^' 



Paraleucothoe, Stebbing, Das Tierreich, xxi., 1906, p. 169. 



PARALEUCOTHOE NOV^-HOLLANDl^, Hastvell. 



Station 48. 



Leucothoe novce-hollandice, Haswell, Proc. Linn. Soc. N. S. Wales 

 iv., 1880, p. 329, pi. xx., fig. 2, e, f, g, gi. 



Locality. — Off Wollongong, 55-56 fathoms. One specimen. 



Family OCHLESID^. 



This family, being founded for a single specimen, offers at 

 present no combination of characters tliat can properly be 

 separated from those of the single genus. The unique feature of 

 palpless maxillipeds separates it from all hitherto known families 

 of the tribe Gammaridea, but the possibility is still open tliat the 

 same characteristic may be discovered in some future genus other- 

 wise on no terms of alliance with the present. 



Genus OCHLESIS, gen. nov. 



Upper and lower lips apically acute. Mandible without molar, 

 the three-jointed palp slender, set far back. First maxilla3 with- 

 out palp, outer plate slender. 8econd maxillse with both plates 

 slender, outer much the longer. Maxilbpeds slender, entirely- 

 devoid of palp, the inner plates long and very narrow, the outer 

 plates closely adjacent, very sliiihtly arnif-d. First gnathopods 

 simple, from the ratlier elongate third joint on waids very slender. 

 Uropods rather elongate, outer ramus shorter than the inner. 



The name Ochlexis, from ox>^r]a-is, disturbance, refeis to the 

 unique character of the maxillipeds, which, so far as an exception 

 can do it, overthrows the leading distinction by which the 



K K 



