68 THE BEACHYUEA. 



Matuta banksii Leach. 



Matuta banksii Alcock, 189G, 65, 158, description, not M. picta Hess. 



Nukuhiva, Marquesas Ids.; shore and seine; Sept. 15, 17, 1899; 2 <?, 

 5 ?, 2juv. 



LEUCOSIIDAE. 



Nucia gelida, sp. nov. 

 PI. 5, Fig, 4; PI. 9, Figs. 2-2 c. 



Entire surface frosted with granules. 



Carapace broader than long, roughly hexagonal with the pterygostomian 

 regions protuberant ; covered with tubercles, which toward the front and 

 sides become gradually elongated, forming blunt conical spines. Longest 

 spines atjateral angle, and at pterygostomian angle. 



Front formed by two teeth separated by a furrow, and bearing each a 

 tubercle on the margin. 



Orbit not concealing the eye, armed with a supraorbital and a sharp post- 

 orbital spine. A spine at the angle of the buccal cavity, and four below 

 the orbit. Two tubercles on the exognath of the outer maxilliped. 



Chelipeds of 9 equal, merus having a few conical spines disposed in a 

 row along the outer margin and in a transverse series on the distal half of 

 the upper surface. Wrist and hand with a few tubercles above; fingers 

 with longitudinal lines of granulations. 



The merus and carpus joints of the legs have each two protuberances on 

 the upper margin ; dactyli elongate, regularly tapering, horny tips trans- 

 parent. 



9, Length 2.5 mm., width 3.5 mm. 



Type bcality: — Fakarava Id., Paumotus ; outer reef; Oct. 12, 1899; I 9 

 ovigerous. (Cat. No. 32,858, U. S. N. M.) 



Leucosides whitmeei (Miers). 



Leucosia whitmeei Alcock, 1896, 65, 224. 

 Mela, Carolines; shore, seine; Feb. 16, 1900; 1 3. 



