FISHERY BULLETIN: VOL. 75, NO. 2 



(at least on the third maxilliped and as far as the 

 third pereopod) but not in Parahaliporus. 



Key to Species of Hymenopenaeus 

 in American Waters 



1. Pterygostomian spine present (section 1) . .2 

 Pterygostomian spine absent (section 2) . . .4 



2. Scaphocerite, at most, barely over- 



reaching antennular peduncle. Ros- 

 trum, in adult, falling short of distal end 

 of first article of antennular peduncle. 

 Females with pyramidal, median protu- 

 berance on sternite XIV projecting ven- 

 trally. Males with ventromedian lobule 

 of petasma bearing two or three small 

 triangular processes distomesially .... 



H. laevis 



Scaphocerite overreaching antennular 

 peduncle by, at least, 0.25 of its own 

 length. Rostrum, in adult, surpassing 

 distal end of first antennular article 3 



3. Females lacking median protuberance 



on sternite XIV. Males with petasma 

 bearing subrectangular distomesial 

 process projecting at right angle to 

 mesial margin, and armed with long 



spines H. nereus 



Females with subpyramidal median pro- 

 tuberance on sternite XIV projecting 

 anteroventrally. Males unknown . Ji. doris 



4. Eye with cornea hemispherical and dis- 



posed such that imaginary line extend- 

 ing from mesial tubercle parallel to 

 basal margin of ocular peduncle inter- 

 sects lateral border of latter far prox- 

 imal to proximolateral extremity of 



cornea H. aphoticus 



Eye with cornea subreniform and dis- 

 posed such that line extending from 

 mesial tubercle parallel to basal margin 

 of ocular peduncle intersects postero- 

 lateral extremity of cornea H. debilis 



Hymenopenaeus debilis Smith 1882 



Figures 2, 3, 4B, 5-9 



Hymenopenaeus debilis Smith 1882:91, pi. 15, fig. 

 6-11, pi. 16, fig. 1-3 [syntypes: 1 9, SE of Savan- 



nah Beach, Ga., 31°57'00"N, 78°18'35"W, 333 

 fm (609 m), 12 July 1880, Blake stn 317. 1 9, 

 MCZ 3270, SE of Cape Fear, N.C., 33°19'00"N, 

 76°12'30"W, 457 fm (836 m), 14 July 1880, Blake 

 stn 323. 1 9,USNM4920,EofCapeFear,N.C, 

 33°42'15"N, 76°00'50"W, 464 fm (849 m), 14 

 July 1880, Blake stn 326]. Smith 1887:687, pi. 

 16, fig. 7. Burkenroad 1936:111, fig. 63-64. 

 Yokoya 1941:52. Anderson and Lindner 1945: 

 289. Harvey 1952:352. Ramadan 1952:9, fig. 22- 

 23. Springer and Bullis 1956:7. Holthuis 1962: 

 108. Boschi 1964:38. Bullis and Thompson 

 1965:5. Zariquiey Alvarez 1968:47, fig. 24b. 

 Crosnier and Forest 1969:545. International 

 Commission on Zoological Nomenclature 1969: 

 139. Roberts and Pequegnat 1970:31. Pequeg- 

 nat and Roberts 1971:8. Crosnier and Forest 

 1973:269, fig. 85 c-d, 87b, 89a. 



Haliporus debilis. Faxon 1896:163. Bouvier 

 1905a:980; 1906a:253; 1906b:3; 1908:83, pi. 1, 

 fig. 6, pi. 14, fig. 9-18. A. Milne Edwards and 

 Bouvier 1909:206, pi. 2, fig. 8. de Man 1911:7. 

 Fowler 1912:543. Boone 1927:78. Maurin 1961: 

 530; 1968:484. Vilela 1970:122. 



Haliporus debilis var. africanus Bouvier 1908:83 

 [syntypes: 4 6 3 9 , MP, off Mazaghan, 33°46'N, 

 9°02'W, 1,319 m, 14 June 1883, Talisman 

 stn 21]. 



Material 



UNITED STATES— New Jersey: 1 9, USNM, Hudson 

 Canyon, 550-600 m, 17 August 1972, Gosnold stn 123. 1 8, 

 USNM, off Barnegat Inlet, 768 m, 3 August 1884, Albatross stn 

 2187. 1 8 , USNM, N of Little Egg Inlet, 984 m, 19 August 1884, 

 Albatross stn 2201. North Carolina: 6 8 6 9, UNC-IMS, E of 

 Cape Fear, 495-490 m, 29 July 1970,Eastward 19 stn 14954. 1 9 

 syntype, USNM 4920, E of Cape Fear, 849 m, 14 July 1880, 

 Blake stn 326. 1 9 syntype, MCZ 3270, SE of Cape Fear, 836 m, 

 14 July 1880, Blake stn 323. 5^49, USNM, SE of Cape Fear, 

 744 m, 6 May 1886, Albatross stn 2676. Georgia: 1 9 , USNM, 

 off St Catherines I, 814 m, 25 June 1961, Atlantis stn A-266-2. 

 Florida: 4 9 , USNM, NE of Cape Kennedy, 922 m, 3 May 1886, 

 Albatross stn 2660. 6 8 , USNM, NE of Cape Kennedy, 931 m, 3 

 May 1886, Albatross stn 2659. 3 9 , USNM, SE of Key West, 558- 

 514 m, 29 August 1967, Gerda stn 861. 1 9, USNM, off St 

 Petersburg, 465 m, 29 September 1951, Oregon stn 489. 1 9, 

 USNM, off Destin, 512 m, 14 March 1885, Albatross stn 2397. 

 1 8 1 9, TAMU, off Santa Rosa I, 565 m, 4 August 1968, Ala- 

 minos stn 68A7-10A. 1 9, TAMU, off Gulf Beach, 1,061 m, 

 7 August 1968, Alaminos stn 68A7-13A. Alabama: 2 9, 

 USNM, off Orange Beach, 585 m, 13 August 1970, Oregon II stn 

 11146. 1 8 5 9, USNM, S of Mobile Bay, 366 m, 18 December 

 1962, Oregon stn 4151. Louisiana: 1 8 1 9, USNM, E of Missis- 

 sippi Delta, 439-448 m, 17 July 1960, Oregon stn 2825. 1 9, 

 USNM, E of Southeast Pass, Mississippi Delta, 626 m, 1 1 Febru- 

 ary 1885, Albatross stn 2376. 3 9 , TAMU, off Garden I Bay, Mis- 



268 



