28 Mr. T. Vernon Wollaston on the 
described below, have much the prima facie appearance 
of small Cossoni, is Avell characterized by its extremely 
robust legs and abnormally short and incrassated feet, the 
apical joint of which is unusually abbreviated and (instead 
of being clavate) conical.* Its claws are excessively 
minute ; and its antenna, which are a good deal thickened, 
are implanted immediately behind the middle of the ros- 
trum. In other respects it is remarkable for its broad 
fimiculus-joints, which are closely com])acted together (the 
second, moreover, not being at all longer than those which 
follow it), and for its rather small and but very slightly 
widened capitulum, as well as for its greatly developed 
prothorax, distinct scutellum, elongate, parallel outline, 
and the comparative robustness of the hook and spine at 
apex of its tibia3, — the front pair of which, moreover, are 
densely fulvo-pubescent towards their inner extremity. 
a. Rostrum elongatum, antennis longiusculis : tihiarum 
spina apicalis interna valde distincta. 
10. Pseudocosso7ius hrevitarsis, n. sp. 
P. linearis, nitidus, niger, depressiusculus ; capite pro- 
thoraceque parce et minute punctulatis ^punctiilis in medio 
rostri elongati evanescentibus), hoc magno, rotundato- 
ovato, ad latera in medio valde rotundato-ampliato; elytris 
elongatis, parallelis, subdepressis, parum profunde punc- 
tato-striatis, interstitiis latis convexis et parcissime minu- 
tissimeque (sub lente) punctulatis ; antennis tarsisque eras- 
sis, robustis, piceis, illis (scapo excepto) tibiisque anticis 
versus apicem internum griseo-pubescentibus, capitulo 
parvo pallidiore. Subtus fere baud sculpturatus (tantum 
punctulis minutis obsoletis, taraen versus utrumque latus 
distinctioribus, adspersus). 
Long. corp. lin. ^^LX 3. 
Captus prope Yokohama, adhuc unicus. 
Both of the Pseiidocossoni here described agree in their 
parallel outline and dark, shining surface, as weU as in 
the fact of their head and prothorax being more finely and 
sparingly punctulated than in any of the other members of 
the family with which we are concerned ; but the present 
* Judging from the analogy of the genus Heterarthrus, it is not im- 
possible that the conical structure of the last joint of the feet may prove to 
be a sexual character ; but until further material, of the two species now 
under consideration, has been obtained, this point cannot be settled. 
