26 Bulletin American Museum of Natural History [Vol. LII 



with prominent, forward-pointing lobe on lower anterior corner, third joint short and 

 thick, fourth joint a little longer than third, lower margin very convex and provided 

 with several long plumose seta? and short blunt spines, fifth joint a little longer than 

 fourth, lower margin evenly convex, upper margin provided with calceoli and short 

 bristles, flagellum very long and slender and provided with calceoli on the upper 

 anterior ends of the joints. Mandible, cutting edge narrow, accessory plate well 

 developed, nine very well-developed spine-teeth, molar prominence surmounted by 

 three strong spine-teeth, palp slender, third joint slightly shorter than second with 

 oblique end provided with several long setse, and several setse on lower margin of 

 joint near distal end. Maxilla 1, palp twice as long as outer plate with several spines 

 on rounded apex, outer plate short and provided with nine curved spine-teeth, some 

 of which are serrate and some bifurcate, inner plate nearly as large as outer and bear- 

 ing on its rounded apex two plumose setse. Maxilla 2, plates subequal, and bearing 

 many curved spines and setse on their rounded ends. Maxilliped, outer plate reach- 

 ing nearly to the middle of second joint of palp and provided on its rounded end and 

 inner edge with curved serrate spines, inner plate short with rounded end, provided 

 with long plumose setse, palp with third joint rather short, dactyl short and tipped 

 with two long curved spines. Side-plate 1 expanded distally and provided on the 

 posterior half of the lower edge with plumose setse; side-plate 4 broadly expanded 

 posteriorly, lower edge provided with plumose setse; side-plate 5, posterior lobe ob- 

 lique with plumose setse on lower rounded edge. Gnathopods 1 and 2 as in Harpinia 

 plumosa (Kr0yer). Perseopods 1-3 as in Harpinia plumosa (Kr0yer). Perseopod 4, 

 second joint little expanded at proximal end and not at all at distal end, front margin 

 convex, hind margin nearly straight and bearing a row of plumose setse, fourth, fifth 

 and sixth joints linear, sixth joint provided on front edge and distal end with long, 

 slender spines, some of which are tipped with a very fine hair-like setule, dactyl long 

 and slender. Perseopod 5 short, second joint expanded backward and decidedly 

 downward, hind margin serrate with plumose setse between the serrations, third and 

 fourth joints short and broad, fifth and sixth joints linear, dactyl very nearly as long 

 as sixth joint and bearing a tooth near the apex. Pleon segment 3, lower posterior 

 angle produced into an acute upward-pointing tooth above which the margin is 

 slightly convex, lower margin convex and bearing a row of plumose setse. Uropod 3 

 not extending backward as far as uropod 1, peduncle short and thick, rami knife- 

 shaped and bearing on their margins and apices long plumose setse, outer ramus a 

 little shorter than inner with very minute second joint. Telson extending a little 

 beyond the peduncle of uropod 3, about as long as broad, cleft a little beyond the 

 middle, lobes rounded apically and each bearing a minute spinule at the outer distal 

 edge, two minute plumose setules and a minute spinule on each other edge. 

 Length. — 5 mm. 



Paraphoxus spinosus Holmes 



Paraphoxus spinosus Holmes, 1903, American Naturalist, XXXVII, p. 276. 



Paraphoxus spinosus Holmes, 1905, Bulletin of the Bureau of Fisheries for 1904, 

 XXIV, p. 477, text figure. 



Paraphoxus spinosus Kttnkel, 1918, State of Connecticut. State Geological 

 and Natural History Survey, Bulletin No. 26, p. 76, text fig. 13. 



