'468 KEPOET OF COMMISSIONER OF FISH AKD FISHERIES. 



aa. Palpi wanting. {Pallcnidce). 

 i. Auxiliary claws j)resent. 



(1). Accessory legs 9-jointed *PalJene Jolinstoii. 



(2). Accessory legs 5-jointed " Phoxichilidium M. Edwards. 



ib. Auxiliary claws wanting. 



(1). Accessory legs 11-jointed * Fseudopallene Wilson. 



(2). Accessory legs 6-jointed *Anoplodaetylus Wilson. 



(3). Accessory legs ? — jointed. Stigmata present (?) Oomerus Hesse ? 



B. Antennae present, simple. 



a. Palpi present. (Achelidce). 

 J). Auxiliary claws present. 

 (1). Antennae 3-jointed. Accessory legs 9-jouited. Palpi 8-jointed. 



Oicehathes Hesse. 

 (2). Antennffi 2-jointed. Accessory legs 10-jointed. Palpi 9-jointed. 



*AcheUa Hodge. 

 (3). AntenuiB 1-jointed. Accessory legs 10-jointed. Palj)i 6-jointed. 



Tanystylum Miers. 

 (4). Antenufe 1-jointed. Accessory legs 10-jointed. Palpi 9-jointed. 



Carniger Bobn. 

 ii. Auxiliary claws wanting. 

 (1). Antennae 3-jointed. Accessory legs 10-jointed. Palpi 10-jointed. 



Eurycide Scliiodte. 

 (2). Antennae 2-jointed. Accessory legs 9-jointed. PaliJi 5-jointed. 



Pariboea Costa. 

 (3). AutenntB 2-jointed. Accessory legs 8-jointed. Palpi 9-jointed. 



Ascorhynchus Sars. 

 (4). Autenme 2-jointed. Accessory legs 10-jointed. Palpi 9-jointed. 



Parazetes Slater. 

 (5). Autenufe 2 (?)-jointed. Accessory legs 6-joiuted. "Palpi 3-jointed." 



( 1 ) Pephredo G oodsir ? 



C. Antennae wanting. 



a. Palpi present. {Pasithoidcp). i 



i. Auxiliary claws present. 



(1). Accessory legs 9-jointed. Palpi 8-jointed Pasithoc Goodsir. 



(2). Accessory legs 9-jointed. Palpi 7-jointed Endeis Costa. 



J)l), Auxiliary claws wanting. 



(1). Accessory legs 10-jointed. Palpi 9-jointed. 



(2) Rhojyalorhynchits Wood-Mason. 

 aa. Palpi wanting. (Pycnogonida'). 



(1). Auxiliary claws present. Accessory legs 7-jointed Phoxichilus LatreiUe. 



('^). Auxiliary claws wanting. Accessory legs 10-jointed. 



*Pycnogonum Brunnicli. 

 (^). It is impossible to ascertain from Goodsir's original description exactly what 

 are the characters of this genus. 



(-). I cannot distinguish Colosscndcis Jarzynsky from this genus. 



The family characters must be regarded as still doubtful. Originally, 

 all the forms were included by Latreille in a single family, the Pycnogo- 

 nidce. Subsequently those genera with antennje were separated as 

 Nymphonidce. Dr. Semper has divided the latter into the JSfympJwnidcB 

 with chelate anteuupe, and the Achelidce with simple antennas ; and in 

 my "Synopsis" (?. c.) those genera with chelate antennoe, but without 

 palpi {Pallene, PJioxicMlidmm, etc.), were characterized as Pallenidw. 

 A further division seems to me necessary, in the removal from the Pyc- 



