154 Bulletin Vanderhilt Marine Museum, Vol. V 



but not in abundance towards the lower margin ; the inner surface of 

 the palm is granulose, moderately dilated, with approximately a half 

 dozen spines on the median region ; the fingers are black, down-curved, 

 pointed, the tips meeting; there are several spines on the proximal 

 upper surface of the upper finger and some on the surface of the lower 

 finger. 



The ambulatories are slender, with the meral joint flattened, its 

 upper lateral margin armed with a line of sharp procurved spines, set 

 among long setae, as is also that of the carpus and propodus ; the lower 

 lateral margin of the merus is also rough, granulose j the dactyl is stout 

 with a horny tip. 



The eye is large, the stalk short, the cornea subspherical. 



The antennulae fold transversely within the f ossett. 



The antennae are greatly reduced, the basal article placed ob- 

 liquely, partly within the orbital hiatus. 



The external maxillipeds have the distal meral margin slightly 

 sinuate, with the inner angle truncate for the palp attachment. 



Eeferences: Pilumnus glohosus Dana, Proc. Acad. Nat. Sci. Phila. 

 vol. VI, p. 236, 1852 ; U. S. Explor. Exped. vol. XIII, Crust, pt. 

 I, p. 236, 1852.— DE Man, Notes Leyden Mus. vol. 12, p. 59, pi. 3, 

 1890. — Rathbun, M. J., Mem. Mus. Comp. Zool. vol. 35, p. 56, 

 1907. 



Subfamily: Actumninae Dana. 



Genus: ACTUMNUS Dana. 



Actuninus obesus (Dana). 



Plate 79. 



Type: Dredged at Lahaina, Island of Maui, Hawaiian Islands, by 

 the United States Exploring Expedition ; depository Smithsonian In- 

 stitution ; the type is believed to be no longer extant. 



Distribution: Lahaina, Maui, Hawaiian Islands, (Dana); south 

 coast of Molokai, Hawaiian Islands, 43 to 73 fms. (Rathbun). Te- 

 mukus Roads, Bali, Dutch East Indies, Tahiti, Society Islands, 

 (Boone). Amirante, (Rathbun) ; Red Sea, (Nobili). 



Material examined: One specimen, from coral, Temukus Roads, 

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

 One taken at Venus Point Reef, Tahiti, Society Islands, August 15, 

 1931, also by the "J.Zi;a.'' 



