254 L. A. BORRADAILE. 



of the third maxilliped ahiiost straight ; the chelipeds stout; the arm short and broad, with a large 

 tooth near the end of the vipper edge and the lower edge roughened; the outside of the wrist 

 roughened in parts; the outside of the hand covered with small, shai-jj thorns, and some of the 

 same thorns on the base of the moveable finger; the fingers compressed, toothed on their opposite 

 edges, and furrowed outside; and the walking legs having the upper edge of the meropodites 

 much compressed and finely toothed, but not crested; the lower edge of the last meropodite 

 with long thorns, those of the other meropodites with much smaller thorns, and the caqjopodites 

 and propodites of all the legs rather sparsely hairy, with broad upper sides covered with prickles." 



Length : 5 mm. Breadth : 8 mm. Colour in spirit : white. 



Dredged in 30 fathoms in Mulaku Atoll. 



Genus Actaea de Haan, 1833. 



32. Actaea tomentosa (H. M.-Edw.), 1834. Alcock, iii. p. 140. 

 Taken on the reef in Male, Goifurfehendu, Addu, and Minikoi Atolls. 



33. Actaea affinis (Dana), 1852. 



Actaea affinis, Borradaile, Proc. Zool. Soc, 1900, p. 583. 



Taken on the reef in Male, Goifurfehendu, Fadifolu, and Minikoi Atolls. 



34. Actaea rufopunctata (H. M.-Edw.), 1834. Alcock, in. p. 142. 



One very small female dredged in N. Male was vnthout the fine felt between the lobules 

 of the back. 



Taken on the shore in Goifurfehendu Atoll, and dredged in Minikoi, North Male, and Miladu- 

 madulu Atolls. 



35. Actaea upeciosa (Dana), 1852. Alcock, in. p. 143. (Fig. 42 C.) 



The first walking leg of this crab bears an organ which seems not to have been noticed 

 hitherto. A brush of stiff yellow bristles surrounds and hides the end-claw on the last joint of 

 the limb. What can be the use of this structure it is hard to see, but so definite and constant 

 an organ must correspond to some feature in the habits of the crab. 



Taken on the reef in Male, Goifurfehendu, and Fadifolu Atolls. 



36. Actaea ruppelli (Krauss), 1843. Alcock, in. p. 144. 



The specimens are not so hairy as Alcock's definition indicates. A. Milne-Edwards says 

 that the species is " legerement j)oilue." Probably the amount of hair depends greatly on the 

 state of preservation of the specimens, in this as in other Xanthids. 



Taken on the reef in Goifurfehendu Atoll. 



37. Actaea lata, n. sp. (Fig. 53). 



Diagnosis: "An Actaea with the carapace broad (length : breadth = about 7 : 10) and 

 strongly lobulated all over, though the lobules are not very convex, the grooves between the 

 lobules smooth and lined with fine dark pile, the lobules covered with pearly granules, which 

 are smaller on the hinder lobules than on those before them, long golden-brown hairs and 



