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MR. E. J. MIEBS OTT THE 



not always harmonize with the characters derived from the struc- 

 ture of the orbits and antennae. 



§ Rostrum vertically compressed and laminated, hijid, ornotclied at 

 the extremity. Orbits shallow and very open ahove, so that the 

 eyes J when retracted, are more or less visible from ahove, the eyes 

 themselves short and thich. 



* Ambulatory legs extremely long and slender. 



EaEEiA, Latr. {Leptopus, Lamk., pt.). Carapace broadly tri- 

 angular, spinose. Eostrum prominent, notched. Orbits with 

 two wide fissures below. Basal antennal joint rather narrow. 

 Anterior legs of male rather small. Type Egeria longipes (Herbst). 



Choeilibinia, LocJclngfon. Carapace triangular. Bostrum 

 long, the spines coalescent at base and divergent at tip. Basal 

 antennal joint moderately enlarged. Upper orbital margin very 

 prominent. Eye-peduncles short. Type Chorilibinia angusta, 

 Lockington. 



** Ambulatory legs of moderate length. 



a. Carapace not spinose. 



*Hemus, a. Milne-Edwards. Eostrum deflexed, notched at 

 the extremity. Basal joint of antennae enlarged ; the second and 

 third joints also dilated and visible from above, with lateral wing- 

 like expansions. Merus joints of the ambulatory legs consider- 

 ably dilated. Type Hemus cristulipes, A. Milne-Edwards. 



IItas, Leach. Eostrum bifid; the median fissure narrow. 

 Basal joint of antennae not much enlarged, the second joint mo- 

 derately dilated, the third joint narrow. Ambulatory legs not 

 dilated or compressed. Type Hyas araneus (Linn.). 



Chioncecetes, Kroyer {Feloplastus, Gerstiicker). Eostrum 

 notched, not deflexed. Basal joint of auteunre very narrow, 

 second and third not diiated. Ambulatory legs in the adult with 

 the joints somewhat compressed and flattened. Type Chiotioecctes 

 opilio, Kroyer. 



b. Carapace spinose. 



Heebstia, Milne-Edwards {Bhodia, Bell, Micropisa, Stimpson). 

 Eostrum notched. Carapace broadly triaugular,with the regions 



