m^'- 



i I 



I 



-A 



^1 



1 



T: 



r 



■^ 



s 





1 



,1 





12 



STALK-EYED CRUSTACEA 



not distinctly toothed ;' ambulatory legs spinose. Abdomen (male) seven- 

 jointed, terminal joint short and broad. 



This genus is proposed for the reception of an interesting Maioid 

 dredo-ed in 182 fathoms on the west coast of the Isthmus of Panama. It 



Maia 



(subg. Lepbmilhrax), and Schkophrys. In its general aspect it bears a close 



Maia 



slender eye-stalks, the elongated wrist and hand, and the short epistomc. 



It 



Maia 





rostrum, spinose legs, supraocular spines, and trenchantly in the exclusion 

 of the antennal flagellum from the orbit by a process of the basal segment 

 of the antenna. In the latter regard it agrees with the genus Cydomaia, 

 the basal segment of the antenna being very broad, three-spined on its distal 

 border, and giving of! a process which separates the flagellum from the orbit 

 by a wide interval ; it also agrees with Ci/clomaia in having a short epistome, 

 a short and broad terminal abdominal segment, and supraocular spines. It 

 differs from C/jdomaia by having a subtriangular carapace, longer rostral 

 spines, and a less abruptly declivous front. It is like Faramilhrax and Sddzo- 

 fhryn in the exclusion of the basal antennal segment from the orbit, but this 

 segment is much broader than in these genera, and three-spined ; moreover, 

 31aiopsis differs from Paramiihrax and Schisophrys in having a more broadly 

 triangular carapace, supraocular spines, slenderer wrist and hand, less deeply 

 cleft rostrum, and spinose ambulatory legs. Like Sddzoplirys and Maidla, it 

 has an accessory spine on each rostral horn. In the shape of the carapace 

 Maiopsis is intermediate between Maia and Cydomaia. In the form of the 

 fmcrers it stands between Maia and raramilhrax on the one side and Sdnso- 

 phrys and Cydomaia on the other, as the fingers, though canaliculate within, 

 are but slightly excavated at the tips. 



The synthetic character of the species upon which this genus is based 

 suggests the propriety of extending the scope of the genus Paramiihrax so 

 thir it may embrace this form, together with Cydomaia and Schkophvj s . 



