236 PERCY SLADEN TRUST EXPEDITION 



180. Lybia tesselata (Latreille). 



Melia tessellata Borradaile, in Gardiner, Fauna and Geogr. Maldive and Laccadive 

 Arch., i. 1902, p. 250, text-fig. 49. 



Salomon ; 2 $, 5 ? (4 ovig.). Saya de Malha, 29 fms., Sta. C 19 ; 1 $. Amirante, 

 25—30 fms., Sta. Ell; 5 $, 5 ? : 30 fms., Sta. E 21 ; 1 <j>. Coetivy ; 6 $, 7 ? (3 ovig.), 

 2 juv. ; one of the females, 10 mm. in width, is grasping anemones which measure 5 mm. 

 in diameter across the expanded tentacles. 



181. Lybia pugil (Alcock). 



Melia pugil Alcock (3), p. 231. Illus. Zool. Investigator, Crust., pt. VII, 1899, 

 pi. 38, fig. 5. 



Saya de Malha, 47 fms., Sta. C 12 ; 1 ? ovig. Amirante, 34 fms., Sta. E 9 ; 1 ?. 



These specimens have the indentation on the postero-lateral border of the carapace, 

 the dorsal surface is distinctly tuberculous. Both hands of the specimen from Saya de 

 Malha carry an anemone, only the right hand of that from Amirante. 



Gardineria, gen. nov. 



Carapace transverse ; antero-lateral margin directed obliquely downward to the angle 

 of the buccal cavity and furnished with a stridulating mechanism. Orbit subentire, 

 pear-shaped. 



Antennules large, nearly transverse. Peduncular segments of antennae narrow ; 

 basal segment falling far short of the front, the following segment just touching the 

 front ; flagellum standing in the orbital hiatus. Efferent ridge well developed posteriorly 

 but not reaching the anterior edge of the buccal cavity. Merus of maxillipeds expanded 

 at outer angle. 



Chelipeds stout, smooth. Legs slender, flattened. Abdomen of $ with all the 

 segments free. 



Type, Gardineria canora, sp. nov. 



This genus is an anomaly among the Xanthidse ; it belongs to the section Hyperolissa, 

 the efferent ridges being strong but not continued to the epistome. The character of the 

 lateral margins, the formation of the orbits, the development of the wrists, are peculiar to 

 the genus. 



182. Gardineria canora, sp. nov. (Plate 19, flgs. 7, 8). 

 Providence, 29 fms., Sta. D 3 ; 1 $. 



C. 1. 77 mm., C. b. 11 -2 mm. 



Carapace oval, convex ; regions, except the cardiac, not defined ; surface punctate ; 

 antero-lateral margin a thin, granulated rim, ending posteriorly in two tuberculiform 

 denticles at the widest part of the carapace ; a ridge on the hindmost tooth is continued 

 inward for a short distance ; anteriorly the marginal rim passes a little outside the angle 

 of the orbit and is prolonged to the angle of the buccal cavity ; a weaker ridge connects it 

 with the orbital angle ; the under side of the marginal rim forms a stridulating ridge 



