2<il 



The carapace is elliptical, convex, and traversed fore-and-aft by a median 

 mnltispinate ridge, — some of the spines being bifid and trifid : the frontal margin 

 is convex and bears two spines, one above the base of either antenna, while just 

 below the frontal margin, between the antenna and the eye, is a spine nearly as 

 long as the eye : the lateral margins in front of the cervical groove are sharply 

 quadridentate — the anterior of the four spines having a second spine to its inner 



s id e w hile behind the cervical groove they are spinate : the posterior margin, 



like the front edge of the second and third abdominal terga, is spinate : in 

 addition to the spines already noticed there is a pair of large spines on the 

 o-astric region, and there are some small spinules on the after margin of the 

 cervical groove. 



The eyestalks are not prolonged beyond the cornea, and are movable. The 

 meropodite of the external maxillipeds has, on its inner edge near the proximal 

 end, two large unciform spines, and, at the distal end of its outer edge, another 

 large spine. The chelipeds slightly exceed the fully extended body in length, 

 and are slender : the ischiopodite has two distal spinelets, one above, the other 

 below : the meropodite has three series of thornlike spines along its upper and 

 inner surface : the carpopodite has a distal ring of spines, and a row of spinules 

 alono- its inner edge : the hand is smooth, the fingers being about three-fourths 

 the length of the palm. The second to the fourth thoracic legs have the 

 meropodite and carpopodite spiny along the front edge, and the dactyli, which 

 are about half the length of the propodites, of the usual form. There are no 

 epipodites on any of the thoracic legs. 



Leno-th of fully extended body 53'5 millim., of chelipeds 58 millim. 



Bay of Bengal, off Madras coast, 210 fathoms. 



Reo-d. No. ~ (Type of the species). 



U. Munldopsis {Galathodes)? tridentata, Esmark. 



Galathea tridentata, Esmark, Forhdl. Skandin. Naturf. 7 Mode. (1856), p. 157. 



Galathodes rosacea, A. Milne Edwards, Rec. de Fig. de Crust, pi. xiii. tig. 1. 1883. 



Galathodes tridentata, A. M. Edw. and Bouvier, Crust. Hirondelle et Princesse Alice, Monaco, 1899, p. S3 



(and ref.). 



Unnidopsis rosacea, Alcock and Anderson, Ann. Mag. Nat. Hist, Jan. 1899, p. 19. 



No epipodites are present on any of the thoracic legs. 



Carapace and legs transversely rugulose. Rostrum hardly half the length 

 of the carapace proper, broad, vertically compressed, carinated, ending in a 

 trifid tip of which the middle spine is the longest. 



Frontal border of carapace with an acute tooth post-antennal in position : 

 lateral border Avith 4 small teeth; posterior border smooth. 



No spines on dorsum of carapace or oil the abdomen. 



