32 Bulletin Vanderbilt Marine Museum, Vol. VI 



Distribution : Admiralty Islands, "Investigator" Station 175, 

 28 fathoms (Henderson, Alcock) ; Fiji Islands, Bali (Boone) ; 

 Ceylon and the Maldives (Alcock) ; Maldives, Haddumati Island, 

 Mahlos Island (Borradaile) ; Saya de Mahla (Laurie). 



Material examined: Two specimens, taken at Vitu Levu, 

 Suva, Fiji Islands, September 9, 1931. One specimen, from coral, 

 Temukus Roads, Bali, Dutch East Indies, October, 1931. 



Technical description : This species, thus far recorded from 

 only five localities in over half a century of exploration, two of 

 which are to be credited to the "Alva," belongs in the same group 

 as Paguru^ deformis, P. varipes and P. asper, which it closely re- 

 sembles in many features. It is readily distinguished from all three 

 of these species by the following: (a) P. dearmatus has the ex- 

 posed upper and outer surface of the left cheliped evenly granu- 

 lose, these granules along the upper or inner margin are only 

 moderately enlarged towards the proximal end, where some of 

 them become spinules, as they also do along the inner carpal 

 margin; (b) the propodus of the third left leg has the outer sur- 

 face granulose and pitted with the upper lateral margin serrulate 

 beneath the tufts of setae. P. dearmatu^ agrees with P. deformis 

 and differs from P. varipes and P. asper in having the outer sur- 

 face of the dactyl of the third left leg canaliculate, this channel 

 extending the entire length of the dactyl ; on the related propodus 

 a similar but less deep channel occurs on the upper side. 



P. deannatus agrees with P. varipes and P. asper and differs 

 from P. deformis in having the dactyl of the larger cheliped granu- 

 lose and non-carinate. It agrees with P. asper but differs from 

 P. deformis and P. varipes in having a non-carinate outer border 

 of the upper surface of the propodus of the third left leg. 



The carapace has the precervical portion well calcified; the 

 rostrum absent, the antennal points distinct ; the dorsal surface is 

 well calcified and marked with numerous lines. The postcervical 

 portion has the anterior lateral and median regions moderately 

 calcified, the other encasing integument tough; the branchial 

 region is not greatly expanded. The abdomen is coiled, the terga 

 well separated ; the second to fifth segments, inclusive, each bear 

 an appendage on the left side ; in the female, these segments are 

 triramous on the second, third and fourth segments, but on the 

 fifth segment the appendage is rudimentary, uniramous. The pre- 

 telsonic and telsonic segments are well calcified; there is a T- 



