592 Mr. W. L. Distant on 
Walker could give no locality for his type which 
was founded on a unique unlocalised specimen. Mr. 
Wollaston took two specimens which appear to be only 
a very slight variety of Walker's species, which probably 
also came from New Guinea. 
In this variety the coxae and bases of femora are 
practically concolorous with the legs, and the marginal 
luteous fascia to the abdomen beneath 1is_ broader. 
Wataikwa River. 
Mimikana, gen. nov. 
Moderately short and broad ; head longer than broad, the lateral 
lobes longer than the central and distinctly spinously, porrectly 
produced in front of it, Jateral margins sinuate, eyes large, moder- 
ately porrect, a little upwardly and forwardly produced, well 
separated from the anterior angles of the pronotum, ccelli wide 
apart, near base of head ; antemiferous tubercles obtusely spinous ; 
antennae five jointed, first joint passing apex of head and subequal 
in length to fourth joint, second, third and fifth a little longer and 
subequal in length; pronotum broader than long, the anterior 
angles broadly, longly, subspinously, anteriorly produced con- 
siderably beyond eyes, lateral margins conecavely sinuate, the 
lateral angles moderately produced and very slightly recurved, 
posterior margin truncate in front of scutellum, anterior margin 
slightly concave ; scutellum longer than broad, the apex subacutely 
rounded, narrowed at about two-thirds from base; corium longer 
than seutellum, apically widened, the apical margin rounded ; 
membrane about reaching the abdominal apex, with about six 
longitudinal veins, the fourth and fifth furcate ; connexivum exposed 
with the apical angles to the segments distinctly tuberculous; 
rostrum reaching the apex of the second abdominal segment, third 
joint much longer than fourth, first joint reaching apex of head, 
bueculae prominent ; mesosternum distinctly centrally carinate ; 
abdomen centrally broadly sulcate for about half its length, spiracles 
prominent. 
This genus is allied to Alathetus, Dall., from Jamaica, 
which Stal placed with doubt in the Discocephalinae, and 
which Dallas, its describer, placed in his Halydinae. I 
am inclined to think that the latter is the more natural 
position for both Alathetus and Mimikana, though they 
may eventually form a division to be placed at the 
commencement of the Halydinae. 
