382 KEPORT OF COMMISSIONER OF FISH AXD FISHERIES. 



George's Banks !, and east of Banqiiereau ! , or Quereau, latitude 40'^ 36' 

 north, longitude 57^ 12' west, where seven flue specimens were taken, 

 ft-oin a halibut {Hipjyoglossus), June 2, 1879, by Capt. J. W. Collins. It 

 appears to replace the preceding- species at the north. 



Sj}eclmens examined. 



X.— ^GID^. 



Front formed of the approximate basal segments of the antennulne, 

 which are not covered by an anterior projection of the head; anteunuloe 

 and antenune presenting an evident distinction into peduncular and 

 flagellar segments; maxillipeds operculiform ; mandibles formed for 

 piercing, palpigerous, mouth suctorial ; first three pairs of legs an coral, 

 last four aml)ulatory ; epimera distinct behind the first thoracic segment; 

 uropods lateral, biramous, ciliated, and flattened. 



Tliis family was represented within our limits by a single species of 

 the typical genus until the summer of 1879, when a single specimen was 

 collected of a second genus belonging to the JEgid{v, but having evident 

 relations with the next famil}^, and in many characters intermediate be- 

 tween JEga and the Cymothoidcv. The two genera by which the family 

 is at present represented on our coast may be fiu^ther characterized as 

 follows : Both the antenuuke and the antennae are directed laterally, the 

 former arising near together on the anterior margin of the head and 

 forming part of the outline of the animal as seen from above. They, 

 as well as the antenna3, present an evident distinction into peduncular 

 and flagellar segments. The maxillipeds are olierculiform, and have 

 the palpus armed with short hooks for adhesion to the surface of the 

 flsh on which they may be feeding. The mandibles are armed with a 

 horny point, but not toothed as in the Cirolanidw, and, while fltted for 

 piercing, are not capable of lacerating and biting off pieces of flesh as in 

 that family. 



The first three pairs of legs are ancoral, or armed with strong cui^ved 

 dactyli, which, once implanted in the body of a victim, retain their hold 

 without eflort — a structure which attains its fullest development in tho 



