68 U.S. NATIONAL MUSEUM BULLETIN 278 



Distribution. — Type-locality: Hancock Atlantic Exped. sta. 

 A32-39, 3 mi. N. of Coche Island, Venezuela, 35-60 m, Apr. 15, 1939, 

 1 male bolotype USNM 120167, 1 female allotype USNM 120168, 

 7 male and 6 female paratypes USNM 120169. 



Other records: Gosnold sta, 1556, off Ft. Lauderdale, Fla. (26° 

 10.6' N., 80° 04.2' W.), 32 m, May 26, 1964, 1 male paratype USNM 

 120170. 



Remarks. — The specific name is in honor of Roland L. Wigley 

 of the U.S. Bureau of Commercial Fisheries Laboratory at Vfoods 

 Hole; Wigley collected one of the paratypes. 



Luconacia Mayer, 1903 



Flagellum of antenna 2 biarticulate, swimming setae absent; 

 mandibular palp 3-segmented, setal formida for terminal article 

 1-x-l with knobs, molar present; outer lobe of maxilliped larger 

 than mner lobe; gUls on pereonites 3 and 4; pereopods 3 and 4, 2- 

 segmented, pereopod 5, 6-segmented and inserted near midlength 

 on pereonite 5; abdomen of male with pak of appendages and pair 

 of lobes, female with no appendages or lobes. 



Type-species: Luconacia incerta Mayer, 1903 (by monotypy). 



Remarks. — For a summary of the differences separating this 

 genus from Deutella see the remarks under Deutella (p. 53). 



IMayer (1903) states that antenna 2 of Luconacia bears swimming 

 setae. Setae are present on antenna 2 but are no more developed than 

 in many other genera he considered as not bearing swimming setae. 



Luconacia incerta Mayer, 1903 



Figures 33-35, 52 



Luconacia incerta Mayer, 1903, pp. 49-50, pi. 2, figs. 11-14, pi. 6, figs. 73-75, 

 pi. 9, fig. 21, 40, 57.— M. Rathbun, 1905, pp. 7, 76.— Sumner, Osburn and 

 Cole, 1911 (1913), p. 656. 



Protellopsis stebbingii Pearse, 1908, pp. 30-32, fig. 4; 1912, p. 379. — Kunkel, 

 1910, pp, 111-113, fig. 43. 



Deutella incerta.— Steiaherg and Dougherty, 1957, pp. 281, 285-286. 



Diagnosis. — Since this genus is monotypic, the characters of the 

 genus are diagnostic for the species. 



Description. — Body spination variable. Length of largest male 

 9 mm, largest female 8 mm, smallest ovigerous female 3 mm. 



Mandibular palp 3-segmented, setal formula for terminal article 

 from 1-3-1 to 1-10-1. Left mandible with 5-toothed incisor, 5-toothed 

 lacinia mobilis, setal row of 3 serrate setae. Right mandible with 

 5-toothed incisor, serrate lacinia mobUis, setal row of 2 serrate setae. 

 Palp of maxUla 1 with 4 apical spines and several medial setae, outer 

 lobe with 5 or 6 apical spines. Inner lobe of maxilla 2 with 4 or 5 



