102 MESSES. NOEMAN AND STEBBING ON THE 



pods (ii. gn") with wrist nearly twice as long as the hand, with two spines on distal 

 portion of front, and one on dorsal margin ; hand with five large and long spines on 

 palm and two on the back ; finger scarcely larger than the spines of hand, with three 

 denticles on the edge. Uropods (il. urj)) with the peduncle not extending beyond the 

 telson ; inner ramus long, with ten articulations, outer short, two-jointed. 



Length 4 millim. 



Sars thus describes the male : — 



" i¥«s «d!t(^?!«s a femina valde diversus. Corporis ejus forma multo magis elongata 

 et angustior. Antennae superiores longiores, flagello interno articulis 2 ultimis pedunculi 

 junctis multo (fere duplo) longiore et 7-articulato, articulis omnibus ad apicem papillis 

 olfactoriis numerosissimis et fasciculatis instructis. Partes masticationis quam in 

 femina multo debiliores et fere omnino rudimentares. Pedum paria 2 anteriora foi'ma 

 ab iisdem femina3 valde diversa et insolito modo elongata. Primum par corporis longi- 

 tudinem, abdomine excepto, ajquans, articulo basali permagno et tumido, sequentibus 

 2 valde elongatis et angustissimis junctis manu plus duplo longioribus, digitis valde 

 forcipatis et intus dentatis ; secundum etiam par longitudine insueta insigne et prime 

 pari nonnihil longius, articulo basali fortissimo, penultimo maxime elongato triplam 

 antecedentis assequente longitudinem, margine postico spinis 7 validis armato. Pedes 

 abdominales structura fere eadem ac in femina sed multo longiores, setis pluribus et 

 longioribus obsiti. 



" Mas junior feminse corporis forma simillimus sed pedum 2 paribus anterioribus 

 multo robustioribus et pedibus abdominalibus longioribus insignis. 



"Habitat sat frequens in sinu Christianiensi ad Vallo in prof. 60-150 orgy, adque 

 Holmestrand prof. 40-50 orgyar." 



Sphyrapus anomahis was not procured in the expeditions to which this memoir has 

 especial reference. The description and figure of the female are derived from type 

 specimens, for which we are indebted to Prof. G. O. Sars. 



Family II. TANAID^. 



Animal produced, narrow, nearly parallel-sided ; pleon scarcely, if at all, narrower than 

 the pei'seon ; there is no spiny armature of either perseon or pleon. 



Carapace truncate in front, or with only a very minute and quite simple rostrum. 

 Ocular alse and eyes present or absent. 



Upper antennae simple, without any second flagellum, placed close together in the 

 middle of the head; "the single flagellum sometimes altogether absent, generally rudi- 

 mentary, rarely well developed in female, but multiarticulate in male. Lower antennae 

 arising beloAV the upper, not furnished with any scale, more slender than the upper 

 pair ; flagellum usually rudimentary, more rarely well developed. 



Mandibles of varied structure in the different genera, but always without a palp. 



