's RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 189 



M. latifrons Haswell. 



1882. M. latifrons Haswell. Proc. Linn. Soc. N.S.W., v. 6 p. 549 (Port 



Philip). 

 1882. „ latifrons Haswell. Cat. Austral. Crust., p. 90 (no new record). 



„Carapace about once and a half as broad as long; surface very finely 

 granulate. Front broad, abouth one-fourth of the total breadth. Orbits 

 nearly transverse. Lateral borders arched, with three teeth separated by 

 deep fissures, the first two broad, the third small. Anterior limbs in the 

 male very large, finely granular like the carapace; hands unarmed, with 

 a granular raised line on the outer surface near the lower border. Immobile 

 finger much bent downwards, regularly denticulated on its inner edge ; 

 inner edge of mobile finger with a denticulated elevation near the base. 

 Inner surface of the arm, edge of carapace, and basal joints of legs, with 

 scattered slender hairs; a thicker coating on the fourth and fifth joints 

 of the ambulatory legs. Length of carapace 3 / 4 ths inch ; greatest breadth 

 l'/ath inch" (Haswell, Cat. Austr. Crust.). 



Haswell's species seems to be nearly related to M. erato, especially 

 by the breadth of the front and the hairy coating of the legs, which, 

 as in my specimens of M. erato, show a thick coating of hair on the 

 carpo- and propodite. The chelipeds of the male appear however to be 

 larger in M. latifrons, there is a granular line near the lower border of 

 the palm, the inner surface of the latter is unarmed, and the „musical crest" 

 on the arm of M. erato seems to be absent. The index is much bent down- 

 ward in M. latifrons, but is in the same line with the lower border of 

 the palm in M. erato. The species of Haswell also seems to attain a larger 

 size (about 28 mm. broad and 18.75 mm. long). 



This species, like the preceding, is not represented in the Leiden 

 Museum, and I am unable to give further information. 



M. setosus H. Milne-Edwards. 



1852. M. setosus H. Milne-Edwards. Ann. Sc. nat., sér. 3, Zool., t. 18 



p. 159 (Australia). 

 1882. „ setosus Haswell. Cat. Austral. Crust., p. 89 (Port Jackson, Australia). 

 1888. „ setosus de Man. Arch. Naturgesch., Jahrg. 53. 1, p. 356, pi. 9 



f. 2 — 2 a (no new record). 

 1897. „ setosus Ortmann, Zool. Jahrb. Abt. Syst., Bnd. 10 p. 343 (Mo- 



reton Bay). 



De Man, who has had occasion to examine an original specimen of 

 this species from the Paris Museum, revealed its main characters. In 



