366 MR. J. R. HENDERSON— A CONTRIBUTION 



This specimen, though probably young (carapace 4 mm. long and 5 mm. broad), shows 

 the very characteristic markings or lines on its dorsal surface, which bear some resem- 

 blance to a face. 



Distribution. N. Australia, Singapore. 



Genus Trapezia, Latr. 



83. Trapezia Cymodoce (Herbst). 



T. Cymodoce (Herbst), Miers, Ann. Mag. Nat. Hist. ser. 5, vol. ii. p. 409 (1878), ubi synon. 

 {=T. dentifrons, Latr., T. hirtipes, .Tacq. & Lucas, T. coerulea, Heller, T. dentata, A. Milne-Edw.). 



Rameswaram, Tuticorin, and Muttuwartu Par; many specimens (Thurston). Very 

 common on the reef at Rameswaram (J. B. H.). 



Distribution. Red Sea, Mascarenes, Malay Archipelago, N. Australia, Pacific. 



84. Trapezia rufopunctata (Herbst). 



T. rufopunctata (Herbst), De Man, Brock's Crust, p. 318, Taf. xiii. fig. 1 (1888). 

 Tuticorin, a female with ova (Thurston); Ceylon (BZaly). 

 Distribution. Malay Archipelago, Pacific. 



85. Trapezia maculata (MacLeay). 



T. maculata (MacLeay), Dana, Crust. U.S. Explor. Exped. vol. i. p. 256, pi. xv. fig. 4 (1852) ; 

 De Man, Brock's Crust, p. 319, Taf. xiii. fig. 2 (1888). 



(=? T. guttata, lliippell). 



Ceylon (Haly). 



This species is closely allied to the last, hut their distinctive features have been 

 recently pointed out by Dr. De Man, in his Report on the Crustacea collected by 

 Dr. Brock in the Malay Archipelago. Both species are probably widely distributed, 

 but it is impossible, owing to the confusion that formerly existed, to determine which 

 form is referred to in connexion with many of the recorded localities. 



Distribution. Red Sea, E. Africa, Amirantes, Mauritius, Rodriguez. 



86. Trapezia areolata, Dana. 



T. areolata, Dana, Crust. U.S. Explor. Exped. vol. i. p. 259, pi. xv. fig. 8 (1852); De Man, Brock's 

 Crust, p. 317 (1888). 



Ceylon (BZaly). 



Distribution. Malay Archipelago, New Caledonia, Tahiti. 



Genus Tetralia, Dana. 



87. Tetralia glaberrima (Herbst). 



T. ylaberrima (Herbst), De Man, Brock's Crust, p. 321 (1888). 



(=7". armata, Dana, T. cavimana, Heller, ? T. heterodactyla, Heller, T. nigrifrons, Oaua) . 



