No. 10 GARTH : BRACHYURAN FAUNA OF THE GALAPAGOS 413 



Habitat. — Under rocks at extreme low tide. 



Depth. — Shore. 



Remarks. — This large and striking species, the only Pacific partheno- 

 pid commonly encountered at low tide, has suffered at the hands of taxon- 

 omists, having been referred to Parthenope (Pseudolambrus) excavata 

 (Stimpson) by Boone (1927) and to Thyrolambrus erosus Rathbun 

 (1898) by the author of that species, although not in print, in an fdenti- 

 fication made in 1933. While at the National Museum in 1939, the 

 writer compared for Mr. Glassell a specimen from Cape San Lucas with 

 the type of T. erosus (USNM No. 21577) and reported that the San 

 Lucas specimen was undoubtedly a new species. The Hancock material 

 was turned over for description to Mr. Glassell, who selected his types 

 from among James Island, Galapagos, material. 



Daldorfia is an Indo-Pacific genus reaching the Hawaiian Islands, 

 where it is represented by D. horrida (Linnaeus), but not known to occur 

 heretofore in the Americas. 



Genus SOLENOLAMBRUS Stimpson, 1871 



Solenolambrus arcuatus Stimpson 



Plate 69, Figs. 3, 4 



So!enola?nbrus arcuatus Stimpson, Ann. Lye. Nat. Hist. New York, vol. 

 10, p. 101 (128), 1871. Rathbun, Bull. 129, U.S. Nat. Mus., p. 538, 

 and synonymy, 1925. Finnegan, Journ. Linn. Soc. London, vol. 37, 

 p. 625, 1931. 

 Type locality. — Panama. 

 Type. — Not extant. 



Range. — Panama (Stimpson, Finnegan). 

 Atlantic analogue. — S. typicus Stimpson. 

 Material examined (5 specimens from 4 stations). — 

 55-33. Lat. 1° 03' 30" S, Long. 90° 17' 30" W, 60 fms, Feb. 5, 1933, 

 1 young. 

 204-34. Gardner Bay, Hood Island, 30 fms, Jan. 31, 1934, 2 young 



females. 

 322-35. Tagus Cove, Albemarle Island, 10 fms, Dec. 10, 1934, 1 male. 

 328-35. Tagus Cove, Albemarle Island, 14 fms, Dec. 10, 1934, 1 male 

 (photographed). 

 Measurements. — Largest male: length 11.5 mm, width 14.4 mm, 

 cheliped 24.7 mm, chela, 12.2 mm. 



Color in life. — Ground color pale olive buff to white. Rostrum cad- 

 mium orange, gastric region olive gray with white spots and streaks show- 

 ing through. Anterolateral margins white. Other areas overcast with 



