732 MB. W. B. LANCHESTER ON CRUSTACEANS [June 19, 



Anterolateral margins curved, about as long as the postero- 

 lateral, divided into four lobe-like teeth, and tending anteriorly to 

 be continued below the orbits. 



Cbelipedes short ; arm trigonous, externally punctated like the 

 carapace, upper margin sharp, lower rounded ; wrist punctate, 

 armed internally with two approximate blunt teeth, externally with 

 a line of three flat tubercles ; hand compressed, grooved externally 

 and above, just below the blunt crest formed by the upper margin ; 

 this groove is very wide and shallow, and not so conspicuous in 

 small examples. Fingers brown, with white, strongly excavate 

 tips; inner margins dentate; longitudinally bisulcate externally, 

 uni-sulcate internally. 



Ambulatory legs with meri smooth, or slightly punctate ; com- 

 pressed, and lightly keeled above. Upper borders of next two joints 

 each with two tubercular prominences, one near the proximal, 

 the other near the distal joint. Sixth joint rounded; dactyl 

 very small and pointed. Abdomen of male five-, of female seven- 

 jointed. 



The two males are of a very deep crimson colour ; the female is 

 of a much lighter shade, more like terra-cotta. 



This species comes between C. rugipes and C. rugatvs. The 

 carapace is broader than that of C. rugipes, but less broad than that 

 of C. rvgatus ; there is a transverse groove behind the epigastric 

 lobes as in the latter, but the protogastric groove, as in the former, 

 is not prolonged backwards to meet the branchio-hepatic. 



Dim. 6 18-oxll. 6 12-75x8. $24-5x15. 



XVII. Genus Lophact^ia A. M.-Edw. 



30. LOPHACTJEA GRANULOSA Eiippell. 



Xantho granulosus, Eiipp. Beschreib. 24 Krabben, p. 24, pi. v. 

 f. 3 (1830). 



JEgle granulosus, de Haan, Crust. Japon. p. 17 (1839). 



Cancer limbatus, M.-Edw. Hist. Nat. Crust, t. i. p. 377, pi. xvi. 

 f. 1 (1834). 



Lopliactata granulosa, A. M.-Edw. Nouv. Arch. Mus. t. i. p. 247 

 (1865) ; Henderson, Trans. Linn. Soc, Zool. vol. v. p. 354 (1893). 



Hab. Singapore ; from dead coral exposed at low water. Two 

 females, one bearing ova. 



The upper margins of the hands are slightly cristate. 



Dim. $37x25. $31-5x21. 



XVIII. Genus Act^a de Haan. 



31. ActjEA granulata Audouin. 



Cancer granulatus, Aud. Explic. d. Planches d'Egypte, Crust, 

 pi. vi. f. 2 (1819). 



Cancer savignyi, M.-Edw. Hist. Nat. Crust, t. i. p. 378 (1834). 

 Cancer (Actcea) granulatus, de Haan, Crust. Japon. p. 47 (1839). 

 Aetata granulata, A. M.-Edw. Nouv. Arch. Mus. t. i. p. 275 



