ABT. 25 THE AMPHIPOD FAMILY BATEIDAE SHOEMAKER 9 



Three specimens collected by the Barbados-Antigua Expedition of 

 1918 at Pelican Island, Barbados, May 13, 1918, are in the collecvion 

 of the University of Iowa. 



BATEA RECTANGULATA Shoemaker 



(Figures 5-7) 



1925. Batea rcctangulata Shoemaker, Bull. Ainer. Mus. Nat. Hist., vol. 52, art. 

 2, p. 31, figs. 7-9. 



Female. — Head with rostrum strongly curved downward and 

 acutely pointed. Mandibles with five spine-teeth on left and four 

 on right; palp, third joint about two-thirds as long as second, and 

 provided on distal half of front margin with many long, curved, 

 minutely-plumosed setae, and near the proximal end of back margin 

 with two long curved, minutely-plumosed setae; one of the distal 

 spines of the third joint much enlarged, making it appear quite 

 dactyl-like; second joint of palp with stout setae on distal half of 

 front margin. Lower lip without inner lobes, or at best only a 

 mere suggestion of them. Maxilla 1, inner plate with seven plumose 

 setae, below which are several setules, outer plate provided with 10 

 or 11 very stout, curved, toothed spine-teeth, palp with first joint 

 about two-thirds the length of second, second joint evenly rounded 

 distally and provided with many short spines. Maxilla 2 with both 

 plates evenly rounded distally, inner plate furnished with two 

 plumose setae and many long .sharp spines, outer plate furnished 

 distally with many long, sharp, curved spines. Maxillipeds, inner 

 plate reaching to about the middle of the first joint of the palp, 

 armed on truncated end and along inner margin with long plumose 

 setae, one sharp spine-tooth among the setae on the truncated end 

 could be discerned, but if others were present they were completely 

 hidden by the mass of surrounding plumose setae, outer plate reach- 

 ing beyond the second joint of palp and provided on the inner edge 

 with 12 tooth-like spines, no plumose setae at distal end of this 

 plate, outer edge provided with a row of fine setules. The three 

 joints of the palp all of equal length, dactyl stout with downward- 

 pointing tip. Gnathopod 1 with the terminal spines of second joint 

 much as in B. catharinensis^ front margin with five or six long 

 setae, and two long curved setae near the distal end of hind margin, 

 (jrnathopod 2 proportionately longer and more slender than in B. 

 catharinensis, second joint very slender and nearly as long as the 

 third, fourth, fifth, and sixth joints combined, fifth joint slender 

 and slightly longer than sixth, sixth joint slender, palm oblique, 

 about two-thirds the length of hind margin and minutely serrated 

 throughout its length, dactyl slightly curved and bearing four for- 

 ward-pointing teeth and several setules on inner nuirgin. Peraeo- 

 79649—26 2 



