ART. 25 THE AMPHIPOD FAMILY BATEIDAE SHOEMAKER 21 



National Museum 13 specimens from La Jolla, southern California, 

 collected by the Scripps Institution. 



CARINOBATEA, new genus 



Last thoracic and first and second abdominal segments strongly 

 dentate. Lower lip without inner lobes. Outer plates of maxillipeds 

 reaching to or a little beyond the end of second joint of palp. Other- 

 wise as in Batea. 



Genotype. — C arinobatea cuspidata., new species. 



CARINOBATEA CUSPIDATA, new species 



(Figures 14, 15) 



Male. — Head, rostrum downward-curved, lance-shaped and 

 sharply pointed, lateral angle shallow and blunt, lower front margin 

 slightly concave, lower anterior angle rather sharp, eyes large and 

 light yellow. Antenna 1 about three-fourths as long as body, first 

 joint of peduncle with lower margin produced forward into a long 

 sharp point extending beyond the middle of the second joint, second 

 joint much smaller than first, third joint less than half the length of 

 second, both first and second joints bearing tufts of setae on their 

 lower margins, flagellum composed of many short joints which bear 

 forward-pointing setae at their lower distal edges, no backward- 

 pointing setae as in B. cathaHnensis. Antenna 2 as long as the en- 

 tire body, fourth and fifth joints with tufts of setae on their upper 

 margins, flagellum composed of many short joints which bear for- 

 ward-pointing setae at their upper distal edges. Mandibles, four 

 spine-teeth on right and five on left, palp with second joint slightly 

 curved and bearing a few long bristles on the front distal edge, 

 third joint a little over half the length of the second and bearing a 

 row of fine bristles on the front edge and a stout dactyl-like spine 

 at the distal end, the hind margin of third joint bearing a group of 

 long curved bristles near the proximal end. Maxilla 1, outer plate 

 with a row of 11 toothed spines, inner plate with eight plumose setae, 

 palp with second joint very little longer than first, a row of short 

 spines on distal end. Maxilla 2 as in Batea cathaHnensis. Maxilliped, 

 outer plate reaching just to the end of the second joint of palp and 

 bearing eight odontoid spines on inner edge, inner plate Avith three 

 stout spine-teeth on truncated end. Lower lip without inner lobes 

 or at best a mere suggestion of them. Gnathopod 1 very slender and 

 recurved, widening a little toward the distal end, front margin bearing 

 six slender setae, hind margin bearing five long curved setae arranged 

 in a compact row near the distal end, two slender setae on distal ex- 

 tremity. Gnathopod 2, front and lower margins of side-plate evenly 



