. Bulletin of the Natural History Museum Geology. 82 JUDSON 1991 Electrobisium acutum Cockerell; Harvey: 334. 1992 Electrobisium acutum Cockerell; Poinar: 220. 1997 Electrobisium acutum Cockerell; Judson: 7. Material examined. Holotype: NHM Pal. Dept. In. 19118, adult, Burmese amber, Hukawng Valley, Myanmar (Burma) (presented by R. C. J. Swinhoe, Feb. 1919). Non-types: 1 nymph (protonymph?), in same slab as holotype; 1 adult, off-cut from block containing holotype, NHM Pal. Dept. In. 19123(3). The following description is based on the non-type specimen in the off-cut (BMNH In. 19123(3))
. Bulletin of the Natural History Museum Geology. 82 JUDSON 1991 Electrobisium acutum Cockerell; Harvey: 334. 1992 Electrobisium acutum Cockerell; Poinar: 220. 1997 Electrobisium acutum Cockerell; Judson: 7. Material examined. Holotype: NHM Pal. Dept. In. 19118, adult, Burmese amber, Hukawng Valley, Myanmar (Burma) (presented by R. C. J. Swinhoe, Feb. 1919). Non-types: 1 nymph (protonymph?), in same slab as holotype; 1 adult, off-cut from block containing holotype, NHM Pal. Dept. In. 19123(3). The following description is based on the non-type specimen in the off-cut (BMNH In. 19123(3)). Because there is a complete frac- ture just below the pseudoscorpion (previously repaired, probably with Canada balsam), no further preparation was attempted. The study was therefore limited to the dorsal view of the fossil, some parts of which (particularly the carapace) were obscured by debris. A small, poorly preserved mite larva (Parasitengona) is also present in the amber fragment, next to the right chela of the pseudoscorpion. Description. General appearance of fossil as shown in Figures 2- 4. However, this is a caricature of the shape of the living animal: the specimen is distorted, with many parts being unnaturally folded or collapsed. The strong folding of the trochanters and femora of the palps makes them appear thinner than normal. The posterior region of the carapace and the anterior tergites have been constricted laterally, such that the carapace has lost its usual subtriangular shape. Some parts, particularly the carapace, are obscured by a layer of debris lying in the same plane as the specimen. The presence of this layer suggests that the specimen was probably exposed on the surface of the resin for some time, before being covered by a second layer. Part of the posterior end of the body has been lost at the fractured edge of the amber. Colour chestnut brown. Setae small (only a few visible on palps and leg tarsi). Carapace with a deep anterior furrow; presence
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