Boone, Crustacea, Cruise of "Alva," 1931 49 



Subtribe: Dromiacea. 



Family: DROMIIDAE. 



Genus : DBOMIDIA Stimpson. 

 Dromidia unidentata (Kuppell). 



Plate 15. 



Type : Ruppell 's type was collected in Mozambique and deposited 

 in the Museum of Frankfort-on-Main, Germany. 



Distribution: Mozambique (Ruppell) ; Red Sea, (Kossman) ; Gulf 

 of Suez, (Caiman) ; Red Sea, several records, Nobili; King Island Bay, 

 Mergui Archipelago, where a local variety of the species is recorded, 

 (de Man). Bali, (Boone) ; pearl banks, Gulf of Manaar, (Laurie) ; 

 Koh Chuen, Koh Kram, Koh Kahdat, Gulf of Siam, (Rathbun). 



Material examined : One young female, taken in coral, at Temukus 

 Roads, Bali, Dutch East Indies, October 25, 1931, by the *'Alva." 



Technical description: Carapace subcircular, 5.5 mm. long, 5.5 

 mm. wide, very convex with frontal margin produced to a deflexed 

 triangulate point on either side of which there is a small tooth, placed 

 about at the junction of the deflexed portion with the upper portion 

 of the margin. The anterolateral margin is devoid of teeth and is con- 

 fluent with the posterior margin, these together forming a wide arc. 

 There is a minute single tooth on each side of the anterolateral margin 

 above the orbit and on each side there is a fringe, composed of long 

 fleshy multiplumose setae, the tips of which are bristly. The entire 

 carapace has the upper surface and visible portions of the sidewalls 

 covered with fine, close set, multiplumose setae, which occur also on the 

 external maxillipeds, chelipeds and ambulatories. The specimen is a 

 female with the proximal abdominal articles showing dorsally. 



The chelipeds are equal, of moderate size, the lower fingers termi- 

 nate in a split or double tooth, between which the downcurved tip of 

 the upper fingers fit. 



The second and third pairs of ambulatories are succesively longer 

 and terminate in a long very curved dactyl. 



The fourth and fifth pairs of legs are reflexed upon the back and 

 are successively smaller, each terminating in a long, very curved 

 dactyl, that interfits between two opposed short spines. 



The antennulae are large with the basal article swollen, vase-like, 

 with the outer distal angle produced ; the second or third articles are 

 short, bulbous, the flagellum biflagellate, the smaller whip of several 



