58 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



(1935), differs consistently from the types of the latter ( U.S.N. M. 

 No. 69215), in the following features: 



( 1 ) The front is less produced, the lobes wider. [An analogous 

 relationship exists between the smooth-carapace species, O. 

 lata Faxon (1893) and O. levis Rathbun (1898).] 



(2) The conspicuous branchial elevation is more extensive and 

 appears rounded, instead of angled, when viewed from off 

 center. 



(3) Just inside the branchial elevation there is a small, sharp, tri- 

 angular prominence cut off by a deep, naked sulcus which oc- 

 cupies an area that in galapagensis is depressed. 



(4) Two small, sharp areoles, one just anterior to the lateral 

 angle, the other just posterior, are distinctly separate in sona, 

 while joined by a ridge in galapagensis. 



(5) The tubercles of the abdomen and granules of the maxilliped 

 are so produced as to all but obscure the rugosities; in galapa- 

 gensis the prominences are reduced to mere ridges outlining 

 the conspicuous indentations. (See pi. 12, figs. 2, 3, and 6.) 



(6) The upper surfaces of the ambulatory legs are heavily granu- 

 late, instead of smooth and bare. (See pi. 12, figs. 4 and 5.) 



The name sona, chosen for its euphony, happens also to be the name 

 of the principal town of the district of Veraguas, situated some miles to 

 the interior of Bahia Honda and referred to by the native population 

 with a strong accent on the final syllable, "sona." 



BRAGHYGNATHA 

 MAJIDAE 



Genus PODOCHELA Stimpson 



Podochela ziesenhennei, new species 



Plate 13, Figs. 1-6 



Type: Male, holotype. Cat. No. 78780, U.S. National Museum, from 

 Tenacatita Bay, Jalisco, Mexico, 4-10 fathoms; March 18, 1933; fe- 

 male, allotype, same locality, shore; March 18, 1933; collected by Allan 

 Hancock Expedition of 1933 at Velero stations 122-33 and 121-33, re- 

 spectively. 



