THE ANNALS AND MAGAZINE OF NATURAL HISTORY. [SEVENTH SERIES.] No. G5. MAY 1903. LX. — Fifteen neio Species and Two new Genera of Tropical and Southern Opiliones. By R. I. POCOCK. [Plates XL & XIL] Family Phalangiidas. Genus Prionostemma, nov. nom. (For Prionomma, Loman, 1902, preocc. by White in 1835 for a Longicoru beetle.) Prionostemma I'nsculptum, sp. n. ^. — Colour. Dorsal surface yellowish or blackish brown, sometimes the black, sometimes the yellow predominating, no median band ; ventral surface marbled black and brown ; femora of legs mostly blackish ; palpi blackish, paler distally. Dorsal surface densely sculptured with close-set pits, separated by a close reticulation of ridges. Ocular tubercle high and vertical in front, higher here than it is wide; mesially grooved above and on each side of the groove beset with numerous irregularly arranged small tubercles. The dorsal scute without trace of segmentation. Falpi studded with small tubercles and short hairs ; patella a little shorter than tibia, its process short, conical, about one Ann. & Mag. N. Hist. Ser. 7. Vol. xi. 31