6.58 MB. E. J. MIERS ON THE 



Htastenus, White {Lahaina, Daua). Carapace triangulair, 

 rounded behind. Spines of rosbrum long, straight, divergent 

 from their base. Preeocular spine small or obsolete. Orbits 

 small, with a hiatus above and one below. Basal joint of antennae 

 not much enlai'ged. Eirst ambulatory legs greatly elongated. 



Subgenus 1. Htastenfs. Carapace smooth and even above, 

 with none or with few long spines. Basal joint of antennae without 

 a spine at its distal end. Anterior legs in male small and slender. 

 Type Syastenus Sehce, "White. 



Subgenus 2. Choeilia, Dana. Carapace uneven and tuber- 

 cular above. Basal joint of antennSB usually with a spine at its 

 distal end. Anterior legs in male usually enlarged, with the palm 

 compressed. Type Ghorilia looigipes, Dana. 



(The genus Lahaina, Daua, is intermediate between Syastenus 

 and Ghorilia. In the form of the carapace and rostrum and an- 

 terior legs it resembles the first ; in the presence of a preeocular 

 spine, and the existence of a spine on the basal joint of the an- 

 tennae, the second. Nevertheless, as the subgenera Syastenus 

 and Ghorilia represent two types of the genus diifering much in 

 external appearance, it seems better to retain them as distinct.) 



Naxia, M.-Edio. {Naxioides, A. Milne-Edwards; Podopisa, 

 Hilgendorf). Carapace subtriangular. Spines of rostrum pa- 

 rallel, and bearing near their extremities an accessory spinule. 

 Preeocular spine usually present. Orbits as in Syastenus^ . Basal 

 joint of antennse longer than broad; its antero-external angle 

 tuberculiform. Eirst ambulatory legs very long. Type Naxia 

 serpulifera, M.-Edwards. 



Scarcely distinct, perhaps, as a genus, from Syastenus. 



MicipPOiDES, A. Milne-Edwards. Carapace subtriangular. 

 Spines of rostrum rather short, deflexed, acute. No preeocular 

 spine. Basal joint of antenuee enlarged, without spine or tubercle 

 at its distal end. Anterior legs in male with the palm dilated. 

 Ambulatory legs of moderate length. Type Micippoides angusti- 

 frons, A. M.-Edwards. 



Marks a transition to Prionorhynchus among the Periceridce. 



* In young specimens of N. scrpulifera the fissures of the orbits are wider, 

 and constitute a veritable hiatus. It appears, therefore, necessary to unite 

 Naxioides, A. M.-Edwards, with this genus, as it is only distinguished by the 

 absence of a prteocular spine, a character which by itself cannot be considered 

 of generic importance. 



