449 Mr. R. J. Pocock on new 
Sterna granular, furnished with blunt  tuberculiform 
processes at the bases of the legs. 
Copulatory feet of male strongly curved inwards at the 
apex and ending in three processes. 
Type #. victoria. 
Eutrachyrhachis margaritatus, sp.n. (Figg. 16, 16 a.) 
Colour black, the teeth on the keels and the tubercle on 
the dorsum clear and shining. 
Antenne not exceeding in length the width of the first 
tergite. 
First tergite convex, depressed in the middle, swollen on 
each side, covered with granules, and bearing in addition 
four rows of large tubercles. 
Keels of anterior segments depressed, these of the second 
larger than of the succeeding segments ; upperside of all the 
keels coarsely granular, with two or three tubercles inter- 
mixed; anterior and posterior borders serrate or bluntly 
denticulate ; lateral borders strongly and bluntly, but very 
variably toothed, bearing two, three, or sometimes four 
rounded teeth in addition to those at the ‘angle ; but sometimes 
there are but two, one close to each of the angular teeth, with 
a rather deeply emarginate space between ; anterior angle of 
keels strongly shouldered. 
Caudal process with border convex, the superior and 
marginal tubercles prominent. 
Copulatory organ with its inferior (anterior) process 
forming a quadrate lamina; adjacent to this is a median, 
strongly recurved prong, while above and situated more 
proximally is another prong which curves beneath or above 
the last-named towards the lamina. 
Measurements in millimetres.—Total length 43; width of 
second segment 6, of fifth 7. 
Loc. Victoria Mountain, New Guinea. 
Eutrachyrhachis victoria, Sp. 
@.—Colour black, apices of keels yellowish red; the 
tubercles clearer yellowish. 
Dorsal tubercles clearer than in margaritatus ; margins of 
keels strongly bidentate, with usually one or more small 
tubercles between them ; the anterior tooth much the largest 
on the second, third, and fourth segments, the posterior much 
the largest on the sixteenth, seventeeth, eighteenth, and 
nineteenth. Caudal process more ovate than in margarttatus, 
