Table. I — Variability in Number of Linear Spines on the Legs of 21 Specimens of Pachyrhamma Fusca n. sp. Arith. Mean Std. Dev Range L. R. L. R. L. R. Fore Femur Pro. 0 0 — — — — Inf. Retro. 0 0 — — — — Fore Tibia Pro. 3 3 — — — — Inf. Retro. 3 3 — — — — Fore Tarsus Pro. 0 0 — — — — Retro. 0 0 — — — — Mid Femur Pro. 0 0 — — — — Inf. Retro. 0 0 — — — — Mid Tibia Pro. 2.9 3.1 0.8 0.9 1–4 1–5 Sup Retro. 1.3 1.3 0.7 0.6 0–3 0–3 Mid Tibia Pro. 3 3 — — — — Inf. Retro. 3 3 — — — — Mid Tarsus Pro. 0 0 — — — — Retro. 0 0 — — — — Hind Femur Pro. 8.4 8.4 1.3 0.8 7–12 7–10 Inf. Retro. 2.7 2.7 0.7 0.8 2–4 2–4 Hind Tibia Pro. 31.8 31.9 3.3 3.7 26–38 25–37 Sup Retro. 34.6 34.4 2.4 2.9 30–38 30–39 Hind Tarsus Pro. 1.9 1.8 0.6 0.4 1(4), 2(16), 4 1(5), 2(15) 1 Sup Pro. 1.7 1.8 0.9 0.7 0–4 0–3 Hind Tarsus Retro. 0.1 0 — — 0(20), 1 0(19), 1 2 Sup Retro. 0.1 0 — — 0(20), 1 0(20) Figures in brackets are number of specimens. Pachyrhamma fusca is most closely related to P. waitomoensis, but differs from it in. 1 The presence of spines on antennae of mature male. 2 A greater number of linear spines on hind femora. From the same tunnels from which P. fusca was collected, twenty-five specimens of another species, also belonging to the genus Pachyrhamma, were collected. They are considered to be new and are described as follows: Pachyrhamma uncata n. sp. Plate 5, Figs. 1, 2 Text-fig. 2, Figs. 1–5. Colour. Basic colour deep ochreous, with pronotum, mesonotum, metanotum and abdominal terga irregularly mottled with dark brown and medium brown. Anterior margin of pronotum and lateral margins of pronotum, mesonotum and metanotum ochreous; femora and tibiae of all legs transversely banded with broad bands of light brown interspersed with narrow bands of ochreous; tarsi pale ochreous, antennae light brown; ovipositor deep reddish-brown. Body. Length up to 28 mm in male and 25 mm in female; average length 24 mm in male and 23 mm in female. Body sparsely clothed with setae. Ovipositor subequal in length with body. Antennae approximately 5.7 times as long as body. Fastigium rising abruptly, as high as long Maxillary palps with third and fourth joints subequal in length. Antennae. Scape about four times as large as pedicel, which is narrower than scape, but broader than other segments; third segment on dorsal and vential aspects narrower than pedicel and twice as long. From fourth segment onwards segments unequal in length, although steadily decreasing in size, all segments thickly clothed with short setae. Sexual dimorphism poorly developed, antennae of male slightly stouter and longer than those of female; no spines present on flagellum of male or female. Legs. Fore and middle legs subequal in length, with hind leg approximately twice length of fore and middle legs. Sexual dimorphism is shown by fore and middle legs of female