438 L. A. BORRADAILE. 



Length : 4-5 mm. Breadth : 5 mm. Colour in spirit, white, tinged in places with yellow. 

 Dredged in Suvadiva and Fadifolu Atolls in 43 and 23 fathoms. 



Genus Leucosilia Bell, 1855. 



11. Leucosilia maldivensis n. sp. (Fig. 117). 



Diagnosis: "A Leucosilia with the carapace subcircular, covered with flattened granules 

 which in the branchial regions pass into 

 minute, flat-topped spines ; the front short, 

 barely hiding the epistome ; a large 

 hollow in the carapace on each side just 

 behind the front and a ridge separating 

 these hollows and running back to the 

 gastric region, where it bears 5 knobs, 

 2 knobs one behind another on the cardiac 

 region, and a blunt knob at each end 

 of the hind margin; the chelipeds about 

 \ as long again as the carapace, granular, 

 the granules being smallest on the hands, 

 the fingers longer than the palms, fur- 

 rowed, slender, and set with slender teeth 

 of various sizes ; the walking-legs short 

 and slender, with long end-joints." 



Length: 12 mm. Breadth: 11mm. 

 Colour in spirit, white. 



Dredged in Suvadiva Atoll, in 43 

 fathoms. 



Genus Myra Leach, 1817. 



12. Myra brevimana Ale, 1896. Al- 

 cock, II. p. 206. 



Dredged in Kolumadulu and South Nilandu Atolls, in 35 and 36 fathoms. 



13. Myra darnleyensis Hasw., 1879. Alcock, ii. p. 207. 



Dredged in Suvadiva, South Nilandu and Mulaku Atolls in 28 — 43 fathoms. 



14. Myra intermedia n. sp. 



A sjjecimen of a new form of Myra in the collection shows a combination of characters 

 which tend to unite the species M. fugax (Fabr.), M. affinis Bell, and M. brevimanus Ale. 



The following are the diagnostic features of the new form : (1) Carapace rather sparsely 

 covered with granules, which are smaller than in M. brevimana except on the intestinal region 

 and the base of the large hinder spine, where they are coarse and close set. (2) A keel 

 is present in the middle of the back and is more closely granular than the field on either 

 side of it. (3) The tooth on the hinder part of the upper of the two lines which define 

 the hepatic facet is almost lost. (4) The front hardly projects to the same level as the 



Fig. 117. Leucosilia maldivensis; a. whole animal, 

 b. outside of hand. 



