Boone, Crustacea, Cruises of "Eagle" and " Ara," 1921-28 25 



Arehiv. fur Naturg., vol. 8, p. 120, 1872. — Henderson, Rept. Sci. 

 Results Explor. Voyage "Challenger" Zool., Crust. Anomura, vol. 

 27, p. 56, 1888. 

 Petrochirus granulatus Stimpson, Proc. Phila. Acad. Nat. Sci., 1858 

 (1859), p. 233. — Heller Novara Crust., p. 85, 1853. — Ortmann, 

 Zool. Jahrb. Syst., vol. 6, p. 289, 1892.— Dolpein, S. B. Bayer. 

 Ak. Munchen, 1899, p. 78. — Alcock, Catal. Indian Decapod 

 Crust., part 2, Anomura, fasc. I, Pagurides, 1905, p. 170, Calcutta. 



Genus : pagueistes Dana. 



Paguristes fecundus Faxon. 



Plate 2. 



Diagnostic characters : As pointed out by Dr. Faxon, the nearest 

 relatives of this species are the West Indian P. lymani and the New 

 Zealand species, P. subpilosus Henderson. . The telson of P. fecundus 

 has the margin ornamented with obscure teeth, while in P. lymani it 

 is set with numerous spines which have dark-colored horny tips. 

 P. fecundus also has a more prominent and acute rostrum which 

 overhangs the ocular segment and fewer spines on the antennular 

 acicule than does lymani. 



Type: Two ovigerous females taken at "Albatross" station 3368, 

 off Mariato Point, in 66 fathoms, in shells of Mitra and Phos. 



Distribution: Known from the type material only and "Ara" ex- 

 pedition. 



Material examined: Five specimens, both sexes, dredged in 100 

 fathoms, Pacific Ocean, off Punta Arenas, Costa Rica, February, 1928, 

 by the "Ara." 



Technical description : Carapace flattish, precervical region small, 

 heart-shaped frontal margin, with an acute, triangulate, rostral point 

 which projects between the ocular scales ; on either side of the rostral 

 point the frontal margin is concave at the base of the eyestalk and 

 carinate, then produced to a weak, lateral point and thence sloping 

 obliquely back to the lateral margin ; the lateral margin is rounded 

 anteriorly and armed with a row of five or six spines, some of which 

 are double, along the edge; posteriorly the lateral margins converge 

 to a rounded point; the postcervical margin is widest posteriorly, 

 being twice as wide as the frontal margin, the lateral lobes with their 

 lateral margins broadly rounded, the upper surface flattish; the 

 posterior margin is but very little excavate above the abdomen; the 

 latter is asymmetrical, dorso-ventrally flattish, loosely coiled, the pre- 



