BRACHTDRA. RATHBDN. 153 



chelate. The penultimate legs always have two large spines 

 facing the dactyli, and sometimes several other smaller 

 spines. The last pair usually have only one large spine, 

 that facing the dactylus ; on the outer side of the dactylus 

 a little way from the base there is a small spine, the tip of 

 which may be broken off. 



The abdomen of both sexes consists of seven free seg- 

 ments, and has a broad raised ridge along the middle line. 

 The last segment in the male is triangular, and the pen- 

 ultimate one is deeply excavated on either side. Those of 

 the female decrease regularly in breadth from the third 

 to the seventh. The sternal sulci of the female end wide 

 apart just behind and close to the articulation of the 

 chelipeds. The eggs are very large and numerous, being 

 2 mm. in breadth. 



PETALOMERA LATERALIS (Gray]. 

 Dromia lateralis, Gray, Zool. Misc., 1831, p. 40. 



Cryptodromia lateralis, Stimpson, Proc, Acad. Nat. Sci. 

 Philadelphia x., 1858, p. 226 [64] ; Smithson. Misc. 

 Coll., xlix., 1907, p. 174, pi. xx., fig. 3. Thomson, 

 Trans. New Zealand Inst., xxi., 1898, p. 170, pi. xx.. 

 figs. 1 and 2. Alcock, Cat. Ind. Dec. Crust., 

 Brachyura, 1901, p. 77, and synonymy. 



Pftalomera lateralis, Borradaile, Ann. Mag. Nat. Hist., 

 (7), xi., 1903, p. 301. 



Sixty to eighty miles west from Eucla, Great Australian 

 Bight, 80-120 fathoms; E.3163; one ovigerous female. 



South and south-west of Mt. Cann, Victoria, 70-100 

 fathoms; E.6110; one male. 



Twenty miles off Babel Islands, Bass Strait, 50-70 

 fathoms: E.6140; one female. 



Length of carapace of female (E.6140) 17.2, width of 

 same 19.7 mm. 



The sternal segments of the female end far apart, 

 opposite the first pair of ambulatory legs. 



