326 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 18 



Key to the Genus Harpiniopsis 



1. Epistome strongly produced epistomatus n. sp. 



1. Epistome not produced 2 



2. Third pleonal epimeron with tooth at lower posterior corner 3 



2. Third pleonal epimeron lacks tooth at lower posterior corner.... 8 



3. Head with acute process at lower corner 4 



3. Head lacks acute process at lower corner 7 



4. Peraeopod 5, article 2 with expanded setose edge at 



lower anterior corner sanpedroensis n. sp. 



4. Peraeopod 5, article 2 with 2-5 short setae at lower 



anterior corner 5 



5. Peraeopod 5, article 2 with 2 large posterior teeth....profundis n. sp. 



5. Peraeopod 5, article 2 with small posterior teeth 6 



6. Third pleonal epimeron with definite posterior tooth similis 



6. Third pleonal epimeron prolonged and acute fulgens n. sp. 



7. Third pleonal epimeron, tooth long emeryi n. sp. 



7. Third pleonal epimeron, tooth short galerus n. sp. 



8. Third pleonal epimeron prolonged behind naiadis n. sp. 



8. Third pleonal epimeron straight behind sp. D 



Harpiniopsis epistomatus, new species 

 (Plates 62, 63) 



Diagnosis. — Head with lower corner unproduced. 



Epistome produced into a long, acute process. 



Peraeopod 5, article 2 rounded below, produced down to the end of 

 article 4, posterior edge with 1-2 small distal serrations. Rest of ap- 

 pendage normally setose. 



Third pleonal epimeron linear, oblique, lower corner rounded. 



Male. — Antenna 2 slightly longer than the body. 



Holotype.—AKY No. 5314, female, 3.5 mm. 



Type locality. — Station 2229-53, 6.9 mi ENE of Long Point, Santa 

 Catalina Island, 33-36-00 N, 118-13-57 W, February 28, 1953, 440 

 fms, sandy clay, gravel, rocks. 



Remarks. — This is the only harpiniid which is known to bear a pro- 

 duced epistome. Otherwise, it is closely related to Harpinia laevis G.O. 

 Sars. 



Material examined. — 41 specimens at 18 stations. 



