300 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



circle; four spines on the cardiac area form a square; there are six 

 paired spines on the branchial areas and one on the hepatic. 



The first and second segments of the abdomen are each armed with 

 a row of large spines; the third, fourth, and fifth segments have a 

 large paired spine on the side with a smaller spine close behind it; 

 the sixth segment has a group of about twelve spines. The spines of 

 the legs are long, slender, and curved, numerous but not crowded. 



This species is distinguished from 1\ -^Investtijatoris Alcock and 

 Anderson by the larger size and lesser numbers of the spines on the 

 chelipeds and ambulatory feet, and by the armature of the abdomen. 

 The spines of the carapace seem to be a little longer in P. defenm, but 

 in general the species are closely related. 



Length of body from the margin behind the eyes to the end of the 

 telson, 33 mm.; of the cheliped, 104 mm.; of the first ambulatory leg, 



60 mm. 



Locality.— Alhatross station 2818, in 392 fathoms, Galapagos Islands. 

 Type.--Q>2X. No. 20563, U.S.N.M. 



LIST OF KNOWN MARINE SPECIES OF GALATHEID^. 

 GALATHEA ACANTHOMERA Stimpson. 

 Galatliea acanthomera Stimpson, Proc. Acad. Nat. Sci. Phila., X, 1858, p. 252. 

 Bonin Islands, between coral, at a depth of 1 fathom. 



GALATHEA ACULEATA Haswell. 



Galathea aculeata Haswell, Proc. Linn. Soc. New South Wales, VI, p. 761; Cat. 

 Aiist. Crust., 1882, p. 162. 



GALATHEA AEGYPTIACA Paulson. 



Gnlathm aecpjptutca Paulson, Izsledovaniya Rakoobraznikh Krasnago Morya, I, 

 Kief, 1875, p. 94, pi. xii, fig. 1-lb. 



GALATHEA AFFINIS Ortmann. 



Galatliea affinU Ortm.xsn, Zool. .Tahrb. System., p. 252, 1892, pi. ii, tig. 9. 



GALATHEA AGASSIZI A. Milne-Edwards. 



Galathea agassizi A. Milne-Edwards, Bull. Mus. Comp. Zool., VIII, 1880, p. 47. — 

 A. Milne-Edwards and E. L. Bouvier, Ann. Sci. Nat. Zool., (7), XVI, 1894, 

 p. 252; Mem. Mus. Comp. Zool., XIX, 1897, No. 2, p. 17, pi. i, figs. 6-15. 



West India region. 



GALATHEA ANDRE\A^SI Kinahati. 



Galathea amlreinfi Kinahan, Proc. Nat. Hist. Soc, Dublin, II, p. 58, pi. xvi, 



fig. 8. 

 Galathea intermedia Bonnier, Bull. Sci. France et Belg., (3), XIX, 1888, p. 130. 



Specimens in the Museum can be distinguished from G. mtermedia 

 (see key, p. 247); the review is, however, incomplete 



