No. 10 GARTH : BRACHYURAN FAUNA OF THE GALAPAGOS 459 



782-38. Darwin Bay, Tower Island, shore, Jan. 16, 1938, 4 males, 2 



females, 1 young. 

 784-38. Darwin Bay, Tower Island, shore, Jan. 17, 1938, 3 males, 8 



females, (2 ovig.). 

 789-38. South Seymour Island, shore, Jan. 19, 1938, 7 males, 9 females. 

 804-38. Onslow Island, near Charles Island, coral, Jan. 23, 1938, 4 



males, 4 females. 

 811-38. Barrington Island, coral, Jan. 26, 1938, 12 males (1 photo- 

 graphed), 19 females (10 ovig.). 

 811a-38. Barrington Island, Pavona coral, Jan. 26, 1938, 3 young 

 males. 

 Measurements. — Large male: length 8.4 mm, width 11.9 mm, 

 cheliped (rigid) coxa to elbow 5.3 mm, elbow to tip of dactyl 9.8 mm, 

 chela 8.8 mm, dactyl 4.5 mm. 

 Habitat. — Pocillopora colony. 



Depth. — Shore and shoal water; occasionally to 40 fms. 

 Remarks. — While at the laboratories of the New York Zoological 

 Society in 1937 the writer examined 3 male and 1 female specimens 

 labeled "cotypes of Pilumnus beebei, Sta. 54, Hood Island, Arcturus Expe- 

 dition, identified by L. Boone." These also carry the label " Micropanope 

 xantusii (Stimpson), identified by M. J. Rathbun," which is unquestion- 

 ably correct. A specimen in a separate bottle labeled "Sta. 54 Arcturus. 

 Photo. Iden. Boone" (but not designated cotype) is of another species of 

 Micropanope. In view of the fact that Boone's written description is based 

 upon the specimens of Micropanope xantusii and these are the designated 

 types, the writer follows Rathbun (1930) in considering Pilumnus beebei 

 a synonym of Stimpson's species. The photographed specimen is described 

 on page 462. 



Through the courtesy of Dr. Isabella Gordon of the British Museum, 

 a paratype of Xanthias serrulata Finnegan (1931) was examined and 

 proved also to be identical with Micropanope xantusii (Stimpson). 



Micropanope polita Rathbun 

 Plate 77, Fig. 4 



Micropanope polita Rathbun, Proc. U.S. Nat. Mus., vol. 16, p. 238, 

 1893; Bull. 152, U.S. Nat. Mus., p. 440, pi. 180, figs. 3 and 4, text 

 fig. 40, and synonymy, 1930. Crane, Zoologica, vol. 22, no. 3, p. 71, 

 1937. 



Panopeus tanneri Faxon, Bull. Mus. Comp. Zool., vol. 24, p. 154, 1893; 

 Mem. Mus. Comp. Zool., vol. 18, p. 19, pi. 3, figs. 4 and 4a, 1895. 



Xanthias politus Boone, Zoologica, vol. 8, no. 4, p. 210, fig. 75, 1927. 



