118 U.S. NATIONAL MUSEUM BULLETIN 236 



I failed to obtain a satisfactory preparation of the oral appendages, 

 but the maxillipede (fig. 39/) is in good position. Coxa short, basis 

 with straight internal margin with fine seta and slightly concave 

 external margin. Endopodite articulating with basis to form claw, 

 2-segmented; segmentation fairly distinct; no additional setae. 



Legs 1 to 4 as in female, pectinate setae on exopodites and endopo- 

 dites of leg 1 slightly different from those of female, as appears from 

 comparison of figures 39a (9) and 39^ (cf). No difference in setal 

 formula. As in female, exopodites and endopodites of legs 2 to 4 

 have terminal segments armed with apical spines with broad lamellar 

 edge, very finely serrated. 



Leg 5 small, exopodite elongate, reaching (without apical spine) 

 halfway along genital somite. Strong apical spine with broad, 

 finely serrated lamellar edge, fully as long as exopodite. 2 external 

 and 2 internal setae. Baso-endopodite small, with much reduced 

 external lobe carrying 1 fine seta, and 2 short setae on baso-endopo- 

 dite itself (fig. 39z). 



The genital somite ventrally carries two large genital plates, 

 produced caudally and overlapping the distal border of the genital 

 somite. Apex armed with strong spine with broad, serrated lamella, 

 as is also present on leg 5 (fig. 39'i). 



I failed to observe not only the external seta at the base of the 

 lancet-shaped spine of leg 5 but also the corresponding seta at the geni- 

 tal plate, which, according to Brian's description, should have been 

 present. 



As in the female, the specimen (as all other males) is colorless; no 

 eye or eyespot could be observed. 



Remarks. — The specimens agree perfectly with the descriptions 

 by Brian (1920, 1928), Monard (1928) and Lang (1948), the only 

 point of difference being the absence of the external seta at the base 

 of the big spine of legs 5 and 6 (genital plate). Scutellidium ligusticum 

 has been recorded in the following localities: Roscoff, France, on the 

 English Channel (Monard, 1935); Banyuls-sur-Mer, France, on the 

 Mediterranean (Monard, 1928); the Gulf of Genoa, Italy (Brian, 

 1920, 1921, 1928); Sardinia (Brian, 1923, 1928); Rovinj, Yugoslavia, 

 on the Adriatic (Brian, 1923, 1928, Vatova, 1928); the Aegean islands 

 of Astypalaia, Jali, Syme, and Karpathos (Brian, 1928); Bermuda 

 in the Atlantic (Willey, 1930); and Teneriffe in the Canary Islands 

 (Noodt, 1955a). Brian's female specimens measured 0.5-0.7 mm., 

 whereas the males were slightly smaller. Noodt mentions two male 

 specimens of 0.37 mm. length. Sewell reports upon female and male 

 specimens from Nancowry Harbour in the Nikobar Islands (9, 0.70 

 mm., cf , 0.6 mm.), but his specimens are very big and, though no 

 structural differences with the present specimens can be lifted from 



