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Show 1 9 0 2 . ] SPIDERS FROM BORNEO AND SINGAPORE. 2 3 7 pubescence is denser at the apices of the segments, forming here narrow yellow bands ; the wings are flavo-hyaline, sometimes with a brown stigma. The mimic is of a reddish hue, the abdomen is a little paler, corresponding to the red-brown seen through the golden pubescence of the wasp's abdomen; the apex of each segment is narrowly banded with yellow. The wings are broadly hyaline along the costal margins and there is a brown stigma. A closely allied species from Celebes is unnamed in the British Museum. Bath this and the preceding Mantispa were referred to Mr. II. McLachlan, who pronounced them to be undescribed species. iv. Mimic. Mantispa ? cor a (Newm.). Model. Mesostenus sp. A small black-and-yellow banded Mantispa was caught on the hill, Bukit Timah, at Singapore amongst short undergrowth, and at the same time I took also several specimens of a common Ichneumon-fly very similarly coloured. The Mantispa was extremely active on the wing and at first sight almost indistinguishable from its model. I append some colour notes on the two insects Mantispa.-Ground-colour of head, thorax, and abdomen black, the following bands bright yellow-two vertical on the face, one transverse on the vertex, an anterior transverse and three longitudinal on the prothorax, one transverse on both meso- and metathorax, which are ventrally blotched with yellow ; abdomen alternately banded black and yellow. Anterior legs yellow blotched with black, mid- and posterior femora broadly banded black and yellow. Bases of wings yellow and a distinct black stigma on the fore wings. Mesostenus sp.-Head yellow; prothorax black bordered with yellow and with two central yellow stripes; mesothorax yellow with a central black spot; metathorax posteriorly yellow; abdomen banded alternately black and yellow. Legs yellow blotched with black. Anterior wings with a conspicuous stigma. I subsequently found the same species of Mantispa or a close ally in Borneo, frequenting the blossoms of a Hibiscus ; the plant was also visited in considerable numbers by a small yellow-and-black Icaria and by a similarly coloured ichneumon-fly; a somewhat careful scrutiny was needed to distinguish these insects one from the other. III. C0LE0PTERA AS MIMICS. I wish especially to acknowledge the kind assistance received from Mr. C. J. Gahan in working out this section of my paper. Most of my examples are taken from the Longicornia, and I have drawn up tables of the mimetic species of the group occurring in Borneo. I have made these as complete as possible, but there are a few described species which 1 have not seen and which have |