BY WILLIAM A. HASWELL, M.A., B.SC. 1007 



This species, of which only a shcrt diagnosis has been 

 published, presents two well-marked varieties — specimens from 

 Port Western, Victoria, all presenting certain constant though 

 unimportant peculiarities by which they differ from specimens 

 from Port Jackson and Port Stephens. The following is a 

 description of the Victorian form : — 



The body is moderately stout. It is ornamented with a few- 

 scattered hairs on the dorsal surface, chiefly at the junctions of the 

 segments. The head is nearly as long as the following four 

 segments ; between the upper antenna? it forms a low triangular 

 lobe. The first three free thoracic segments are shorter than the 

 rest — the first being the shortest of all. The abdomen is about 

 equal in length to the two last segments of the thorax. The 

 superior antennae are stout, the first joint half the length of the 

 the head, the second about a third of the length of the first and a 

 little narrower, the third about two-thirds of the length of the 

 second, narrower, with a minute lobe at its apex which may be a 

 rudimentary fourth joint : the extremities of all three joints are 

 ornamented with a few long hairs. The inferior antennae are 

 equal in length to the superior pair and slightly more slender, and 

 consist of six joints ; the first joint is short and stout ; the second 

 more than twice the length of the first ; the third about a half to 

 a third of the length of the second ; the fourth as long or very 

 nearly as long as the second ; the fifth about two-thirds of the 

 length of the fourth ; the sixth very small, not much more than a 

 quarter of the length of the penultimate joint; the terminal joints are 

 ornamented with long delicate hairs. The fingers of the first pair 

 of thoracic appendages have brown corneous tips ; they are not 

 denticulated ; but there is a row of short fine hairs near the inner 

 edge of the immobile finger. The second pair of thoracic append- 

 ages are more slender than the following, are not ornamented with 

 spines, and terminate in a long, slender, two-jointed finger. The 

 third and fourth pairs are shorter than the second and a little 

 stouter; their dactyli are also slender and straight, but their 

 meros and carpus are armed with short, stout spines, which are 

 most numerous round the distal end of the latter segment. The 



