198 U.S. NATIONAL MUSEUM BULLETIN 258 



Distribution. — Western Atlantic Ocean; eastern Pacific Ocean 

 from Puget Sound, Washington, to Gulf of California, 0-73 m. 

 but generally shallower than 35 m. 



Paraphoxus stenodes J. L. Barnard 



Paraphoxus stenodes J. L. Barnard, 1960b, pp. 221-224, pis. 17, 18; 1964a, pp. 

 244-245. 



Material. — goleta: Phyllospadix-pelvetiid grid, scarce (10 per 

 sq. m.). 



Distribution.- — Pt. Conception, California, to Bahia de San 

 Cristobal, Baja California, 5-88 m., rare in intertidal. 



Pleustidae 



Parapleustes Buchholz 



Key to Parapleustes 



1. Body with dorsal teeth 2 



Body lacking dorsal teeth 3 



2. One pleonite with dorsal tooth P. monocuspis 



Two pleonites with dorsal teeth P. bicuspis 



3. Pereopods 1-2 with sixth articles slightly inflated, furnished densely with 



spines to form grasping appendage P. commensalis 



Pereopods 1-2 simple 4 



4. Gnathopods lacking posterior lobes on fifth articles 5 



Gnathopods bearing distinct posterior lobes on fifth articles 6 



5. Gnathopodal palms very oblique, palm on second gnathopod 65% as long as 



posterior margin of article 6 P. assimilis 



Gnathopodal palms less oblique than above, palm on second gnathopod 30% 

 as long as posterior margin of article 6 . . P. pacificus, johanseni, oculatus 



6. Gnathopodal palms with broad, shallow medial tooth P. major 



Gnathopodal palms with minute cusp or no teeth 7 



7. Antenna 1 not longer than first 4 body segments 8 



Antenna 1 longer than first 5 body segments 9 



8. Sixth articles of gnathopods suboval P. gracilis 



Sixth articles of gnathopods rectangular P. nautilus, n.sp. 



9. Eye triangular P. trianguloculatus 



Eye round, reniform or oval 10 



10. Gnathopods densely setose, palms indistinct from posterior margins of sixth 



articles P. den, n.sp. 



Gnathopods poorly setose, palms distinct 11 



11. Third pleonal epimeron with distinct posteroventral tooth, palms of gnath- 



opods lacking sharp medial cusp P. sinuipalma 



Third pleonal epimeron sharply quadrate or with scarcely distinct prolonga- 

 tion, palms of gnathopods with sharp medial cusp. P. derzhavini, pugettensis 



Notes: Literature on Parapleustes mielcki (Sokolowsky) not seen. 

 Possibly P. pacifica and P. johanseni are synonyms of P. oculatus. 

 Possibly P. derzhavini is a synonym of P. pugettensis. 

 References on next page. 



