SOMETHING ABOUT SUB-GENERA 129 
the left side, of the crab. The parasite referred to would 
no doubt now stand under some other generic name. 
Myra, Leach, 1817, is another genus of common occur- 
rence throughout the Indo-Pacific region, of which the 
species Myra fugax (Fabricius) has been frequently re- 
named. It is remarkable for the great length which the 
slender chelipeds sometimes attain, and which have caused 
the Japanese to call it the long-handed crab. 
Ebalia, Leach, 1817, has an extremely extended range, 
and includes numerous species, among which several occur 
in European seas, and four of them in the waters of Great 
Britain. These four are Hhalia tuberosa (Pennant), Hhalia 
tumefacta (Montagu), Kbalia Cranchii, Leach, and Hbalia 
nux, Norman. It is curious that Bell, in his ‘ History of 
British Stalk-eyed Crustacea,’ should have thought it right 
to follow Leach in calling the first two of these respectively 
Ebalia Pennantii and Hbalia Bryer, while he relegated 
the earlier names to the synonymy. ‘The resemblance 
which these little creatures, with their legs all tucked up, 
assume to a rugged little fragment of stone has been 
already mentioned. Comparing Ebalia with a genus 
Phlyxia instituted by Bell in 1855, Mr. Miers says :—‘ The 
genera Hbalia and Phlyxia are now connected by so many 
intermediate species, that not one of the distinctive cha- 
racters mentioned by Bell can be regarded as constant. 
I propose, therefore, to unite these genera, but to separate 
the species under two primary sections or sub-genera (for 
which the names Hbalia and Phlyxia may conveniently be 
retained) as follows :— 
‘J. Front slightly concave or truncated, not quadri- 
dentated (Hbalia).’ This is followed by a list of twenty- 
SIX species. 
‘JI. Front with four distinct (usually tuberculiform) 
lobes or teeth, including the tooth at the interior angle of 
the orbit (Phlyzia). This is followed by a list of seven 
species, in regard to which it is pointed out that all are 
restricted to Australia. The convenience of having a 
generic name to indicate so small a mark of separation 
may well be questioned, but the inconvenience of the sub- 
