BHACHYURA FROM TORRES STRAITS. 27 



on the intestinal region. It agrees closely with the type specimens of M. dahia, Miers 

 (Proc. Zool. Soc. 1S79, p. 12), from Japan, whicli Miers suhsecpiently (Rep. ' Challenger ' 

 Erachyura, p. 314) identitied with the A[. coaUta of Ililgeudort' (Monatsljer. Akad. Berlin, 

 1S78, p. 812, pi. i. figs. 6, 7), ranking it as a variety of 31. fugax. The 31. pentacautha 

 ol' Alcock, of which I have examined specimens, differs chiefly in the puhescence of the 

 frontal region. Tliis provisional species is regarded hy its anthoi- as heing prohablv 

 the young form of M. fugax. 



Locality. " Channels between reefs, ^Murray Island." 



Myra -\ustkalis, lias well (?). 



Myra australis, Haswell, Proc. Limi. Soc. N. S. Wales, iv. p. 50, pi. v. tig-. ;i (1879) ; Haswell, Cat. 

 .^ustr. Crust, j). 122 ; Miers, Rep. ' Challeuger ' Bracliyura, p. 315. 



A female specimen, 20 mm. in length, is provisionally referred to this species on 

 account of its general resemhlance to specimens so named in the collections of the 

 British IMuseum. Prom these and from Haswell's account, however, it differs in the 

 shorter neck-region, in the finer and closer granulation of the surface, and in the absence 

 of any distinct group of granu.les on the intestinal region. 



Loralihi. " Channel between reefs, Mer." 



Leucosia longifrons, var. pulchekrima, Miers. 



Lenco.y'ni jnilclierrima, Miers, Tr. Linn. Soc. (2) Zool. i. p. 236, pi. xx.wiii. figs. 4-6 (1877); Haswell, 



Proc. Linn. Soc. N. S. Wales, iv. p. 46 (1879). 

 L. spkndida, Haswell, 1. c. p. 47, pi. v. fig. 1. 

 L. loiiyifroHs, \ay. piikherrima, Alcock, Journ. Asiatic Soc. Bengal, hv. (2) p. 219 (1896). 



A male specimen, agreeing minutely with Miers's type specimen, save that the 

 " tlioracic sinus " is rather more contracted. \\ydxi from the colour-markings, Alcock 

 states that this variety is distinguished from the typical L. longifrons by having the 

 surface of the cai apace slightly punctate instead of perfectly smooth, and by the stronger 

 dorsal and ventral keels on the jjropodites of the ambulatory legs. Neither of these 

 characters is so Avell marked in the Torres Straits specimen as in some specimens from 

 Yokoliama which I refer to L. longifroiis. The carapace of the present specimen is mucli 

 distorted, being swollen on one side, probably by the presence of an epicarid parasite in 

 the branchial chamber. 



Locali///. " Channel between reefs, Murray Island, 15-20 fath." 



Leucosia Haswelli, Miers. 



Leucosia HasireUi, ]\Hers, Rep. 'Challenger' Bracliyura, p. 821, pi. .\xvii. tig. 2 ; Alcock, Journ. 

 Asiatic Soc. Bengal, Ixv. (2) p. 222 (1896). 



Our specimen shows an almost precise agreement with the descriptions of Miers and 

 Alcock and with the type s))ecimens in the British Museum. The inner (or lower) 

 margin of the hand is defined hy two distinct rows of fine granules, the lower replacing 

 the row of punctations of Alcock's description. 



Locality. "Pringing reef and shore, Thursday Island." 



4* 



