482 KEPOET OF COMMISSIONER OF FISH AND FISHERIES. 



Anoplodactylus Wilson. 



Body slender. Eostrum cylindrical, rounded. Antennae three-jointed, 

 •chelate. Palpi wanting. Accessory legs six-jointed, wanting in the 

 female. Neck elongated, extending forward over the rostrum. Legs 

 slender; dactylus without auxiliary claws. 



This genus differs from FhoxicMUdium, which it otherwise closely 

 resembles, in the number of joints composing the accessory legs, and in 

 the absence of auxiliary claws upon the dactylus. PhoxichiUdlum has 

 been made to include several distinct types, among them a form having 

 eleven-jointed accessory legs (P. Jiuminense Kr.), and ^' Phoxichilidium 

 clieliferum^^ Claparede, a very remarkable form with the accessory legs 

 ten-jointed and distinctly chelate. 



Kroyer's Phoxichilidium petiolatum (Voy. en Seand., Laponie, etc., PI. 

 38, fig. 3) belongs to Anoplodactylus^ and probably also Fhoxichilidium 

 virescens Hodge. 



Since the publication of my original description of this genus it has 

 been pointed out to me that Say's genus Anapliia (described in 1821) 

 may be identical with it. Say's description was based upon two speci- 

 mens which did not possess accessory legs and were probably females ; 

 hence it is impossible to determine their exact generic characters. 

 Nevertheless, their general agreement with the type of Anoplodactylus 

 is so close that I think it probable that they are generically the same ; 

 and, if so, of course the name Anapkia should be used. To prevent 

 possible confusion, however, the later name is retained until an oppor- 

 tunity is afforded for examination of specimens from the locality where 

 Say's specimens were collected. 



Anoplodactylus lentus Wilson. 



Americau Journal of Science and Arts, vol. xv, No. 87, p. 200, 1378. — Trans. 



Conn. Acad., vol. v, p. 14, PI. IV, figs. 3 a to 3 e, July, 1878. 

 FJioxichiUdium maxillare Smith, Report on the Invertebrata of Vineyard 



Sound, &c., p. 250 [544], PI. VII, fig. 35, 1874 [non Stimpsou]. 

 1 Anapliia pallida Say, Journ. Acad. Nat. Sci. Phil., vol. 2, p. 51), PI. V, figs. 7 

 and 7 a, 1821. 



Plate III, Figures 16 to 18. 

 Body slender, lateral processes widely separated. Oculiferous seg- 

 ment broad, as loug as the two following segments united, not emargi- 

 nate between the bases of the antenuae. Posterior segment somewhat 

 elongated and very slender, the lateral processes directed obliquely 

 backward. Neck swollen. Abdomen rather more than twice as long 

 as broad, slightly bifid at the extremity. Oculiferous tubercle promi- 

 nent, acute, placed far forward. Eyes ovate, light brown to black. 



Eostrum large, longer than the oculiferous segment, somewhat con- 

 .stricted basally, so as to appear clavate ; extremity subglobose. 



Antennae long and slender, hairy, their bases closely approximated ; 

 basal joint extending beyond the extremity of the rostrum ; chelae stout, 

 iiairy, claws acute, opposable edges smooth. 



