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Show 1900.] FROM SINGAPORE AND MALACCA. 729 Hab. Singapore; dredged from 10-15 fms. Two males. One of these shows the typical markings on the carapace and chelipedes ; iu the other, the red stripes on the carapace are fainter and less broad, aud the crimson colour of the chelipedes is absent. Dim. S 5-5 x 5. J 5-5 x 5. 23 a. HARROVIA ALBOLINEATA LONGIPES, var. nov. (Plate XLIV. fig. 3.) Hab. Singapore. From a shoal of scattered stones and coral, with sand in places, partially exposed at low-water. One male. In this specimen, the most striking feature is the length of the chelipedes, which are three times as long as the carapace, and not only twice as in H. albolineata. Further, tbe tubercles on the arm and wrist are very minute ; and the two antero-lateral teeth are as low and as broad as the post-ocular tooth ; the fourth is narrow and pointed. Carapace raised but not tuberculate ; minutely punctate, when seen through a lens, and of a diffuse dark red colour. Chelipedes rough, or even slightly granular, and generally as in H. albolineata. N o tubercles on the ambulatory legs. Dim. 7*5x7. 24. HARROVIA TUBERCULATA Haswell. Harrovia tuberculata, Hasw. Proc Linn. Soc N . S. W . vol. iv. p. 455, pi. xxvii. f. 1 (1880). Hab. Singapore. One female, taken from off the arms of a Crinoid (Actinometra multiradiala) dredged from 6 fms. This species is very near H. albolineata, of which it is possibly only a variety. I can discern the same arrangement of tubercles on the carapace in one of m y examples of H. albolineata, in which tbe colouring is altogether fainter than usual. In the other, strongly coloured, individual the arrangement is not so obvious ; but in no instance is it very distinct. The tubercles on the meri of the ambulatory legs seem to be the only distinctive feature ; for, as regards the absence of colour-markings, the two examples of H. albolineata show that a certain variation occurs in this respect. Variation is also evident in the tubercles of the arm : thus in the above examples of H. albolineata I find :- A. A spine at the base of the posterior margin just where it appears from beneath the carapace. In both arms of the one male this is relatively strong aud spiniform, and in the right arm of the other male ; in the left arm of the other male it is small, tubercular. B. A spine in a corresponding position on the anterior margin. In the right arm of the one male this is single tuberculate, in the left arm bifid tuberculate. In the right arm of the other male this is bifid and spinous, in the left it is only represented by a roughening of a granulous nature. |