PANDALUS. 
PANDALUS. Leach. 
» 
Antennae superiorcs breviores sctis duabus bifidis; pedunculus 3-articulatus, artlculo primo 
majore ad oculorum receptionem excavato et sub oculis externe foliaceo-producto; articulis 
secundo tertioque brevioribus jequalibus: seta superior brevior a basi usque ad medium 
incrassata et ad inferioris receptionem excavata : 
Inferiores eorpore longiores, setaceae, decrescentes, squama ad apicem externe unidentata 
pedunculo annexa. 
Palpi pediformes articulis tribus exsertis, articulis primo longiore a basi usque ad medium interne 
emarginato, secundo breviore, ultimo acuminato apice spinuloso. 
Pedes decern: par anticum adactylum, articulo extimo acuminato, simplici; par secundum 
didactyl um inasquale, hCc lorigissimo, tenuissimo carpo, cubito et brachiorum apice multi- 
articulatis ; ill6 breviore, crassiore carpo cubitoque apice multi -art iculatis ; paria tertium, 
quartum et quintum simplicia (magnitudine subdecrescentia) unguibus interne spinulosis 
instructa. 
Abdomen 6-articulatum, articulis secundo infra antice et postice ad latera producto, tertio postice 
gibboso-producto. 
Cauda pentaphylla ; processibus externo externe bidentato ; medio elongato apice basi duplo an- 
gustiore, spinis mobilibus instructo, dorsoque spinulis in lineas duas lougitudinales digestis. 
Superior antennas with two setae; the peduncle three-jointed, the first joint longest excavated 
above to receive the eyes and produced beneath the eyes into a leaf-like process, the second and 
third joints shorter and equal in length; the upper seta shortest, thickened from the base to the 
middle, excavated beneath for the reception of the inferior seta : superior antennae longer than the 
body, setaceous, and gradually decreasing towards their extremities, furnished at their base with 
a large scale, having its external point unidentate. Feet-like palpi with three exserted joints, the 
first of which is longest, excavated from the base to the middle; the second joint is shortest, the 
last acuminate with the apex spinose. Legs ten; first pair simple, adactyle; the second pair 
unequal, didactyle ; one being very long and slender with the wrist, fore-arm and apex of the 
arm many-jointed, the other moderately long and thicker, having the wrist and apex of the fore-arm 
many-jointed; the three other pairs simple (slightly diminishing in size) furnished with nails which 
are spinulose within. Abdomen six-jointed, the second joint with its lower sides behind and 
before produced; the third joint gibbous behind. Tail composed of five plates, the external 
process externally bidentate, the middle process with the apex (only half the breadth of the base) 
armed with moveable spines, the upper part also with tw o rows of spines arranged longitudinally. 
