(AuxxwiT ey) 
the genus (Gen. Crust. et Insect., IV, p. 379), the antennz 
are described as ‘ Capite vix longiores, articulis sex ultimis 
clavam perfoliatam abruptam, breviter oratam, efficientibus ; 
basilari elongato, tertio duobusque sequentibus minimis, 
transversis.’ Neither Lacordaire, nor Leconte and Horn, 
say anything as to the number of antennal joints. 
“TI present a drawing of the antenna of my species which 
shows (1) that there are eleven clearly articulated joints, (2) 
that the club consists of five well-defined and widened joints. 
“Mr. G, C. Champion, who has examined the antennz of 
the following species, sends me the enclosed report on the 
subject. From this it appears that of eight species examined 
two only have ten-jointed antenna, viz. 7. aphodioides, Latr., 
and 7’. ciliaris, Champ., the remaining six species having eleven- 
jointed antenne. The missing joint in the former is one of 
the small joints, between the basal two and the apical five. 
This very extraordinary difference shows the difficulty of 
relying on such important structural character as number of 
antennal joints for generic distinction.” 
Mr. Champion’s report is as follows :— 
‘“T now send a slide of 7. aphodioides and of 7. ciliaris 
(hardly dry yet) for your inspection. My report on the 
various species known to me is as follows (all have two stout 
basal joints and a five-jointed club) :— 
T. aphodioides, Latr., Europe and N. Afr., 10-jointed. 
T. tenuestriatus, Fairm., Obock and Perim, 11-jointed. 
T. chinensis, Ch., Namoa I., 11-jointed. 
7’. sabuleti, Lewis, Japan, 11-jointed. 
7’. pallens, Ch., Ceylon, 11-jointed. 
7’. niger, Cart., Australia, 11-jointed. 
T. levis, Ch., Australia, 11-jointed. 
T. ciliaris, Ch., Australia, 10-jointed. 
It is very extraordinary, and shows that no reliance can be 
placed on this character for generic differentiation. The 
additional joint is always another very small one (4 instead 
of 3). No variation in basal joint, as you supposed.” 
