BY WILLIAM A. HASWELL, M.A., B.SC. 1005 



dilated. The head is armed, a little in front of and internal to 

 each eye, with a much shorter process, about a fifth of the length 

 of the mesial one, directed forwards. The head is about the same 

 length as the first segment of the pereion,biit considerably narrower : 

 the first segment has the pleural regions expanded and produced 

 behind into a short acute process. The following five segments are 

 nearly equal, slightly produced laterally : the seventh is rather 

 larger, with two obscure teeth on each side of its distal border. 

 The terminal segment is large, about a third of the length of the 

 body, nearly triangular in outline, the apex produced into a bluntly 

 pointed process with a slight notch on either side near the extremity : 

 on the dorsal surface are two oval elevations covered with minute 

 granulations. The anterior antennae are slender, but as long as 

 the head and first two segments. The posterior antennae are much 

 longer and stouter, more than half the length of the body, the 

 peduncle and flagellum nearly equal in length, the latter with 

 about thirty segments. The uropoda are narrow, about half the 

 length of the terminal segment, not extending to near the apex, 

 with a notch about the middle of the outer border in which is 

 articulated the rudiment of a mobile ramus, and with two obscure 

 teeth in the distal half. The length is j^'oths of an inch. The 

 colour of the dried specimen is mottled red and brown, the hoi'ns 

 red at the extremities : in the middle of the first body segment is 

 an oval white spot with a light red mark in the middle of it. 

 Dredged at the " Heads " of Port Jackson. [Macleay Museum.] 



Fam. Oniscoidea. 



LiGIA AUSTRALIEXSIS. 



Miers (I.e., p. 299) describes fully the species common on the 

 Queensland coast, doubtfully referring it to Ligia Gaudichaudii, 

 var. Australiensis, Dana. 



Fam. ANCEiDyE, 

 Anceus ferox. N. Sp. 

 [Plate LII. Figs. 1—5.] 

 The body is very broad, the greatest breadth being nearly ogth 

 of an inch, and the total length, exclusive of the mandibles, being 



