CALIGOIDEA. ^365 



somewhat remote. Natatory feet eight. Prehensile feet of second 

 pair stout cheliform. Caudal stylets styliform, acute, nearly naked. 



The Pandari are at first sight distinguished by the rounded caudal 

 extremity, bearing usually on each side a slender pointed stylet, which 

 has two or three minute spinules or setae on its inner margin. In a 

 few species the stylets are concealed below. They are also strongly 

 marked by their posterior thoracic segments, the first posterior to the 

 carapax being alately prolonged backward on either side, and the 

 next two having the posterior margin of the shell expanded backward 

 and bilobate. 



The frontal margin is very narrow near the medial line. The 

 carapax is large, arcuate in front, more or less concave behind, and 

 the posterior margin for some distance is often dentate. The winged 

 prolongation of the second segment is elliptical or subrectangular. 

 The posterior lobes of the following segments are separated either by 

 an acute or a rounded concavity. The first abdominal segment is 

 large, and as usual bears the long external ovarian tubes. The poste- 

 rior is entirely ventral, and is so situated that its stylets usually pro- 

 ject backward (a little divergent) either side of the preceding segment. 

 The anterior antennas are two-jointed ; they have very short setae 

 on the outer margin of first joint, and others at apex of second joint 

 in two small clusters. These organs as usual pertain to the frontal 

 segment of the carapax. The posterior antennae are three-jointed, and 

 the last in the species examined is slender, and terminates in a 

 recurved point. Near the outer margin of the carapax, there are two 

 sucker disks on each side, one just posterior to the antennae, the other 

 near the posterior part of the cephalo thorax. A third is sometimes 

 (always ?) found growing from the outer part of the base of the posterior 

 antennae. The buccal trunk is quite slender, and has small lamellar 

 maxillae hugging it on either side. The first pair of feet are the same 

 as in Caligus. The second pair of feet are large and stout cheliform, 

 as in Nogagus. The first pair of natatories is small, the next larger, 

 the two following very broad and lamellar. Their setae are very 

 short, never long plumose, often looking like small spines. 



The species have frequently a deep brownish-black colour, except- 

 ing a clear spot over the eyes, and some light tints in certain other 

 parts. 



