with light brown and ochreous, light brown at their junction; tibiae and tarsi ochreous at their junction; tarsi ochreous; antennae ochreous, ovipositor light reddish-brown. Body. Length up to 24.5 mm. Dorsal surface of body sparsely clothed with setae; ventral surface sparsely clothed with setae. Ovipositor 0.8 as long as body. Antennae broken. Maxillary palps with third and fourth segments subequal in length. Pronotum margined anteriorly and laterally; mesonotum margined laterally. Bodies of male and female sub-equal. Antennae. As in generic description. Third segment narrower than pedicel, on dorsal aspect 1.4 as long as pedicel in male and 1.6 as long as pedicel in female; on ventral aspect 1.1 as long as pedicel in male and 1.3 as long as pedicel in female. Sexual dimorphism well developed, male possessing longer, stouter antennae than female; no spines present on flagellum of male or female. Legs. Long and slender. Fore and middle legs subequal in length, with hind leg twice length of fore and middle legs. Sexual dimorphism poorly developed, fore and middle legs of female being subequal in length with those of male; hind legs of female 0.85 as long as those of male. Femora, tibiae and two proximal segments of hind tarsi armed with variable number of linear spines (Table I). No spines occur on fore or middle tarsi. Apical spines constant in number, as in generic description. First segment of hind tarsus 0.8 length of other three together. Ratio of length of legs to length of body—Fore leg: male, 1.36:1; female, 1.26:1. Middle leg: male, 1.30:1; female, 1.28:1. Hind leg: male, 2.72·1; female, 2.49:1. Table I.—Variability in Number of Linear Spines on the Legs of Six Specimens of Pachyrhamma Longicauda N. Sp. Arith. Mean Std. Dev. Range L. R. L. R. L. R. Fore Femur Pro. 2.8 2.6 1.0 0.5 2–4 2–3 Inf. Retro. 0 0 0 0 0 0 Fore Tibia Pro. 2.8 3 0.4 0 2–3 3 Inf. Retro. 3 3 0 0 3 3 Fore Tarsus Pro. 0 0 0 0 0 0 Retro. 0 0 0 0 0 0 Mid. Femur Pro. 0.3 0.4 0.8 0.5 0–2 0–1 Inf. Retro. 1.5 1.4 0.8 0.5 0–2 1–2 Mid. Tibia Pro. 2.8 2.8 0.8 0.4 2–4 2–3 Sup. Retro. 3.0 2.8 0.6 0.4 2–4 2–3 Mid Tibia Pro. 3 3 0 0 0 0 Inf. Retro. 3 3 0 0 0 0 Mid Tarsus Pro. 0 0 0 0 0 0 Retro. 0 0 0 0 0 0 Hind Femur Pro. 7.5 7.5 0.6 0.8 7–8 6–8 Inf. Retro. 3.8 3.7 3.1 1.8 2–10 2–7 Hind Tibia Pro. 16.7 18.4 3.6 4.3 12–20 11–22 Sup. Retro. 21.0 22.6 4.3 3.6 15–26 17–26 Hind Tarsus Pro. 2.2 2.2 0.4 0.4 2–3 2–3 1 Sup. Retro. 2.3 2.4 0.8 0.9 2–4 2–4 Hind Tarsus Pro. 0.7 0.8 0.5 0.4 0–1 0–1 2 Sup. Retro 0.7 0.8 0.5 0.4 0–1 0–1 Genitalia. Female: Suranal plate, Fig. 1 (SAP), concave laterally, distal margin truncate; distolaterally the plate bears two groups of setae. Subgenital plate, Fig. 2 (SGP), straight laterally, tapering to a point distally; or Fig. 3, emarginate distally; plate sparsely clothed with setae. Male: Suranal plate, Fig. 4 (SPL), concave laterally, truncate distally; whole plate thickly coated with short setae. Subgenital plate (hypandrium), Fig. 5 (H), triangulate, 1.1 longer than wide, sides spreading slightly proximally, changing to concave medianly, attenuated distally with rounded apex. Apical protuberance on ventral surface