181 
basilar segment very short, wider than the frontal; antenne monili- 
form, approximated at their base, joints very short, with the terminal 
one slightly elongated; eyes absent; mandibles very slender, long, 
pointed, arcuate, toothless, compressed and twisted near their base ; 
labium very short, transverse, with the anterior border slightly pro- 
duced and emarginated ; Jabium internum projecting, thick, folded, and 
formed for sucking ; palpi with the terminal joints slender and acute ; 
sub-basilar segment short, but larger than the basilar; body elon- 
gated, segments more than 160; legs inserted into little foveole in 
the lateral ventral plates ; the two or three posterior segments of the 
body enlarged and tuberose ; anal styles small, not used in walking. 
1. Gonibregmatus Cumingii, Newport. 
Greyish ash-colour ; frontal segment very convex, rounded poste- 
riorly ; mandibles blackish; labium smooth; all the segments of the 
body very short, convex ; dorsal surface with numerous irregular lon- 
gitudinal sulci ; antepenultimate segment with the dorsal and ventral 
plates atrophied ; anal styles slender, with their basilar internal mar- 
gin carinated; anal scale convex, subcordate, posteriorly rounded 
with two thin marginal plates ; legs 161 pairs, naked, claws black. 
Length 43 to 5 inches. 
From the Philippine Islands. Mr. Cuming. 
In the collection at the British Museum. 
I have never seen the Geophilus Walckeneri of Gervais, but from 
the description given of that species I strongly suspect that it ought 
to be included in this genus. 
Mr. Gould then, at the request of the Chairman, exhibited some 
new species of the genus Ortyx, which he thus characterizes :— 
Ortyx nicrocutaris. Ort. vertice et corpore superiore splendide 
Suscis ; strigd nigrd superciliari, a rostro usque ad occiput ; et 
super hance strigd albd; sub oculos lined albd a rostro ad plumas 
auriculares, et per latera colli excurrente, gulamque nigram circum- 
dante plumis pectoris et abdominis albis nigro marginatis anguste 
apud pectus, late et distincte apud abdomen, et sese squamatim 
ostendentibus ; femoribus crissoque arenaceo-castaneis ; plumis la- 
teralibus in medio albis. 
Crown and all the upper surface rich brown; margins of the 
tertiaries and wing-coverts fawn-colour; these feathers are also 
crossed with indistinct zigzag lines, freckles, and blotches of black 
and blackish brown; primaries greyish brown; tail deep bluish grey, 
the centre feathers and the external margins of the remainder freckled 
with reddish brown and buff; a black stripe, commencing at the base 
of the bill, passes over the eye to the occiput; above this a stripe of 
white; below the eye a white line from the base of the bill to the 
ear-coverts, down the sides of the neck, and encircling the throat, 
which is jet black ; feathers of the chest and abdomen white, mar- 
gined with a zone of black; narrow on the chest, broad and distinct 
on the abdomen ; giving the under surface a scaly appearance ; flanks, 
thighs and under tail-coverts sandy chestnut, the centre of each o 
the flank-feathers white ; bill black; feet flesh-white. 
