Phyllopoda of Australia. 235 



to the tail. Branchial feet each with covering plate very large, 

 distal lobe of endopodite (6th endite) rather short, broadly 

 rounded in average sized sexually matured specimens, but in 

 larger ones much longer, and narrower distally, often produced 

 considerably beyond the end of the exopodite. Distal margin 

 emarginate. 



In each of above characters the two sexes agree. Male of 

 smaller size than female, and antennules longer. Claspers large 

 and powerful, basal joint with inner surface clothed with minute 

 teeth, second joint longer than the first, inner surface possessing 

 transverse ridges. Frontal appendages minute, simple, curled 

 inwards and downwards, their inner margin minutely spinulose, 

 united proximally, and attached to frontal base of antennae. 

 Caudal rami at least as long as the last four segments of tail 

 combined, (in female somewhat shorter). Sheath of penes not 

 notched, penes, when everted, stout, bent outsvards and hind- 

 wards in the shape of a sickle, distal half thickly clothed with 

 short recurved spines, proximal half possessing large, stout, 

 acute spines pointing proximally. 



Fetnale. — Second antennae very long, flattened, flexuose, 

 gradually narrowing to a somewhat drawn-out, pointed end ; 

 sometimes they extend as far back as the end of the trunk, but 

 in younger although sexually mature forms often very much 

 shorter. The ovisac large, pear shaped, with apex elongated, 

 and furnished on the ventral surface, in a line with the extremity 

 of the first segment of the tail, with a small protruding trans- 

 verse ridge or lip. In forms bearing eggs the ovisac varies in 

 size, extending in some to the end of the fourth, and in others to 

 the sixth segment of the tail. Eggs sculptured with irregular 

 hexagonal facets bounded by conspicuous ridges. 



Length of largest $ exclusive of caudal rami, 30 mm. Length 

 of largest $ exclusive of CRudal rami, 40 m.m. 



Colour. — Translucent, caudal rami vivid reddish-orange, ovisac 

 flecked with patches of sky blue. 



Distribution. — Queensland, inland area (Dr. Richters) ; El wood 

 and Rosstown, Southern Victoria (collected by Mr. R. Cummins, 

 B.Sc.) ; Goornong, near Bendigo (collected by Mr. Alex. Purdie), 

 St. Arnaud (collected by Mr. C. J. Gabriel), both Northern 

 Victoria ; coastal area of South Australia and Central Australia 

 (S.A. Museum). 



