Discovery reports (1957) Discovery reports discoveryreports28inst Year: 1957 SYSTEMATIC REPORT 51 with its small setiferous distal lobe, (iii) by the straighter outer margin of the antennal scale, and (iv) by the armature of the telson. In addition, the apex of the antennal scale is, as a rule, more rounded than in grimaldii and is almost symmetrical (cf. Figs. 4A and 5 A). The form of the telson is one of the easiest methods of recognizing this species. The spines arming the distal portion of the lateral margins are arranged in a series of a few very long spines with a varying number of sma

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Discovery reports (1957) Discovery reports discoveryreports28inst Year: 1957 SYSTEMATIC REPORT 51 with its small setiferous distal lobe, (iii) by the straighter outer margin of the antennal scale, and (iv) by the armature of the telson. In addition, the apex of the antennal scale is, as a rule, more rounded than in grimaldii and is almost symmetrical (cf. Figs. 4A and 5 A). The form of the telson is one of the easiest methods of recognizing this species. The spines arming the distal portion of the lateral margins are arranged in a series of a few very long spines with a varying number of small spines in the spaces between them. These small spines are sub-equal in size and the number in the distal space varies between 8 and 24. In grimaldii, the smaller spines are not very much shorter than the long spines and there are rarely more than three or four of them in the distal space (Figs. 4B and 5B).

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