STALK-EYED CRUSTACEA 131 



7. Panopeus. 



Panopeiis . . H. Milne Edwards, Miers, A. Milne 

 Edwards. 



Carapace transverse, depressed, with the dorsal surface 

 often marked with transverse prominences which are 

 minutely granulated. The cervical and mesogastric 

 sutures are distinct. The front projects but slightly 

 beyond the level of the orbits, and is divided by a median 

 notch into two truncated or siuuated lobes, which are 

 separated by another notch from the antero-lateral angle 

 of the orbit, whose margins are interrupted by fissures or 

 notches, and there is a distinct emargination immediately 

 below the tooth at the external orbital angle. The 

 antero-lateral margins, shorter than the postero-lateral 

 margins, are regularly divided into five teeth, of which the 

 first or exterior orbital tooth is united more or less 

 completely with the next ; there is often a small tubercle 

 on the subhepatic region below the interspace between the 

 first and second antero-lateral tooth. The eyes are small. 

 The basal antennal joint reaches the infero-lateral process 

 of the front, but not the extremity of the subocular lobe 

 of the orbit, which is often prominent and spiniform, and 

 the flagellum occupies the inner orbital hiatus. The 

 fourth joint of the external maxillipedes is often some- 

 what produced at its antero-external angle. The first pair 

 of legs, in the adult male, is moderately developed. The 

 walking legs are of moderate length, with the joints 

 neither carinated nor spinosc ; the terminal joint is 

 styliform and straight. 



The abdomen, in the male, is usually five-jointed, with 

 the third to the fifth coalescent ; it completely covers the 

 sternum at its base. 



