CLASSIFICATION OE THE MAIOID CSUSTACEA. G45 



appears to me tliafc these genera must certainly be arranged in the 

 same subdivision with Cavijposcia and Eucinetops. 



■^CoLLODES, Simpson. Carapace subtrianguhir. Eostrum 

 bifid, with the spines approximated. Merus joint of outer 

 maxillipedes produced internally. Eyes of moderate length. 

 Ambulatory legs all subprehensile, tarsi slender. Type Collodes 

 granosus, Stimpson. 



*AiiAcnN0Psis, Stimpson. Carapace narrow, suboblong. Eos- 

 trum bifid. Eyes long. Merus joint of the outer maxillipedes 

 broader than long. Ambulatory legs filiform, tarsi straight. Type 

 Araclmopsisfilipes, Stimpson. 



*Bateachonotus, Stimpson. Carapace subtriangular. Eos- 

 trum emarginate. Merus joint of the outer maxillipedes broad. 

 Ambulatory legs of the first pair extremely long, those of the 

 posterior pairs very short. Type Batrachonotus fragosus, Stimp- 

 son. 



*Eupeognatha, Stimpson. Carapace subpyriform. Eostrum 

 apparently trifid (the median lobe being the interantennulary 

 spine). A prseocular spine. Eye large, peduncle short. Merus 

 joint of the outer maxillipedes somewhat L-shaped. Type j&w- 

 prognatlia rastellifera, Stimpson. 



Acn^opsis, Stimpson. Carapace triangular, with the regions 

 well defined. Eostrum short, bifid ; postocular spine small ; a 

 prseocular spine present. Outer maxillipede-s with the merus joint 

 elongated. Ambulatory legs slender ; three last pairs with the 

 dactyir falciform. Type Achceopsis spinulosus, Stimpson. 



iKACHrs, Fair. Carapace triangular, with the regions well 

 defined. Eostrum very short, bifid ; no pra^ocular spine ; post- 

 ocular sj)ine large. Outer maxillipedes with the merus joint 

 elongated. Ambulatory legs elongated, with the terminal joints 

 usually straight. Type Inachus dorsettensis (Pennant). 



** Basal antennal joint very short, not reacMng to front. 



Oncinoptjs, De Haan. Carapace elongate-triangular. Eront 

 emarginate. Basal antennal joint very short, the next longer. 

 Merus joint of outer maxillipedes elongated and articulated with 

 the next at its summit. Ambulatory legs slender, the penulti- 

 mate joints of the first and second pairs more or less dilated and 



