398 STALK-EYED CRUSTACEA 



Section B. Galathodea. 



Galathodca . . . Henderson. 

 GalatheidcE . . . Leach. 

 GalatJieides . . . H. Milne Edwards. 

 Galatheidea . . . De Haan, Dana, Stimpson, Miers, 

 Haswell. 



Carapace elongate, the regions well defined and usually 

 rugose, with the front produced into a pi'ominent and acute 

 rostrum. First pair of legs and walking legs elongated 

 and frequently slender. Abdomen broad and well 

 developed, simply bent or folded on itself, never closely 

 applied to the surface of the thorax, terminating in a 

 powerful swimming fan formed by the telson and the 

 appendages of the sixth segment. Females with four 

 pairs of simple and slender ovigerous appendages on the 

 second, third, fourth, and fifth segment (those of the second 

 and fourth segment may be rudimentary) ; males furnished 

 with two pairs of well-developed accessory genital organs 

 on the first and second segment (those of the first segment 

 may be rudimentary or absent), and three pairs of short, 

 usually flattened appendages on the third, fourth, and fifth 

 segment, all of which may, however, be rudimentary. 

 Antennules exposed ; the antennal peduncle directed 

 forwards. External maxillipedes subpediform, with the 

 third and fourth joint narrow and frequently spinose 

 internally. Eyes placed in very incomplete orbits. 



One family. 



Family II. Galatheidae. 



GalatJieidcB .... Dana, Henderson. 

 Characters the same as the Section. 



