32 
INSECTA SAUNDERSIA'NA. 
thighs sublineav: tibia also sublinear, or scarcely dilated towards the tip, 
nearly as long as the thighs: tarsi a little shorter, rather wide; 1st joint 
subcylindric, nearly twice as long as the second, which is more conically 
dilated towards the apex, where it is nearly as wide as long; 3rd scarcely 
wider, emarginate, shorter. Posterior rather ample, finely punctulate- 
subalutaceous, having, moreover, on the thighs and tibiae, large distant 
punctures, less marked than the body: thighs wide, subdepressed, with 
their sides straight (consequently not clavate), edentate; they reach to the 
middle of the 4th abdominal segment: tibia one-third shorter, thick, some¬ 
what thickened towards the tip, which is subobliquely truncate, having on 
the inside two long divergent moveable rufous spines, nearly a third of the 
tibia in length : tarsi longer than the tibiae, their 1st joint more than half the 
total length, slightly curved, sublinear; 2nd cylindrico-subconic, twice as 
long as its apical width, half the length of the first; 3rd very short (more 
so than the preceding); terminal subclavate, subcylindric, as well as those 
of the anterior legs. All the claws divergent, curved and thin at the apex, 
unidentate beneath near the base. 
Obs .—A single specimen, from Columbia, differs in having the tho¬ 
rax more abruptly narrowed from the middle of the sides to the apex; the 
scutellum shorter and subconic, although longer than wide; the ground 
colour of the body is also darker, the alternate interstices are less convex, 
as well as the suture, but it has exactly the same size, form and sculpture. 
At present I dare not separate this single individual from the Insular spe¬ 
cimens, which, having been collected in considerable numbers by M. Salle, 
are uniform ; but if these characters were further confirmed by other spe¬ 
cimens, they might be distinguished as a different species, for which I 
would propose the name of Sperm. Prater. 
Named after M. Salle, whose investigations in different parts of 
America have considerably enriched Entomology and other branches of 
Natural History. 
