THE CRUSTACEA OF NEW JERSEY. 283 



expansion of segment. Epimera distinctly separated on all fol- 

 lowing six segments, in second directed forward and project in 

 anteriorly acute process. Those in third, fourth and fifth seg- 

 ments narrow elongated plates comprising- front half of seg^- 

 ments.^and those of last two segments also narrow, elongate and 

 comprise nearly entire length of segments. Abdomen abruptly 

 narrower than thorax, first segment much narrower and deeply 

 set in thorax. Four following- segments wide as seventh thoracic 

 segment, gradually increasing in width to sixth segment, which 

 very wide. Terminal or abdominal segment nearly twice as 

 broad as long, posterior lateral angles rounded, and posterior 

 edge deeply emarginate. Uropoda long as terminal abdominal 

 segment, ecpial in width, rounded at ends, and outer branch very 

 slig-htly shorter than inner. All legs prehensile, with long nar- 

 row curved dactyli, and those of fourth pair longest. High 

 carina on basis of last four pairs of legs, its height increasing 

 from fourth to seventh pair, where extremely high. Length 

 4 mm. (H.Richardson.) 



Remarks. — This species was originally described from Ca^^e 

 May and has since been found in the Gulf Stream north to 

 latitude 40°. Southward it ranges to Brazil. It is parasitic on 

 species of flying fish, as Bxonantcs exiliens and Bxonautcs 

 rondeletii, also on the dolphin, Coryphcrna. It has not been 

 secured in New Jersey since the type was found in 18 18, though 

 is doubtless very abundant off shore. 



Genus OLENCIRA Leach. 



Olencira Leach, Diet. Sci. Nat.. XII. 1818, p. 35T. Type Olencira lamarkii 

 Leach, monotypic. 



Body rather stout, relaxed, more or less distorted. Head 

 constricted basally, not immersed in thoracic segment. First 

 antennae separated at base, rather compressed. Second antennae 

 compressed. Eyes present. Front edge of first thoracic seg- 

 ment trisinuate. Hind angles or first thoracic segments 

 not produced, though those of seventh segment produced. 

 Epimera almost reach hind angles of segments. Terminal ab- 



