PORTUNIDA K. 63 



Thalamita coeruleipes Jacquinot. 



Thalamita coeruleipes Jacquinot, in Jacquinot & Lucas, Voyage au Pole Slid, Zool., 3, 

 Crust., 1853, 53; atlas, 1852 (?), pi. 5, fig. 6. 



Fakarava Id., Paumotus; reef; Oct. 12, 1899; 1 <? ; also Society Ids., 

 A. Garrett coll. (U. S. N. M.). 



This species is very near T. prymna (Herbst), but the fourth lateral tooth 

 is not much smaller than the other teeth. 



Thalamita admete Herbst. 



Cancer admete Herbst, Natur. d. Krabben u. Krebse, 1803, 3, part 3, 40, pi. 57, fig. 1. 

 Thalamita admeta Alcock, 1899, 68, 82 (part). Borradaile, Fauna, Maldive Arch., 1902, 



1, 202 (var. A.). 

 Thalamita admete Rathbun, Bull. U. S. Pish Coram, for 1903 (1906), part 3, 874. 



Fakarava Island, Paumotus; outer reef; Oct. 12, 1899 ; 106*, 13 ?, 8 of 

 which are ovigerous. 



Makemo, Paumotus ; reef; Oct. 21, 1899 ; 1 $, 1 9, 2 juv. 



Tongatabu ; reef and shore ; Nov. 30, 1899 ; 1 6*, 1 9. 



Funafuti, Ellice Ids. ; reef ; Dec. 24, 1899 ; 19 ovig., 1 juv. 



Mela, Carolines ; shore, in seine ; Feb. 16, 1900 ; 1 9 shedding its shell. 



The fourth side tooth is smaller, more rudimentary, than in specimens 

 recorded in 1906 (loc. cit.), but otherwise there are no differences, so that 

 there is perhaps no dividing line between the form with the 4th tooth almost 

 undiscernible and the typical form with a well-developed tooth. 



Thalamita gardineri Borradaile, variety. 

 Thalamita gardineri Borradaile, Pauna Maldive Arch., 1902, 1, 205, text fig. 36. 



Fakarava Id., Paumotus ; outer reef; Oct. 12, 1899; 1 <?, 1 9 (ovig.). 



Length of S 12.1, width 19.5, fronto-orbital width 14.2 mm. 



Differs from typical gardineri as follows : — 



Carapace wider; length .62 of width instead of .76 of width. This 

 additional width of carapace, although without an increase in fronto-orbital 

 distance, gives the crab less of a Char//!>dis-\ike aspect. 



The inner surface of the palm is almost smooth ; very fine squamiform 

 markings are visible with a lens ; the longitudinal ridge through the middle 

 is smooth in the larger cheliped, obscurely granulate in the smaller. (Cheli- 

 peds of <? wanting.) 



