C Y M T H I D E A. 751 



Cephalothorax broader posteriorly. First joint of thorax nearly twice 

 as long as second; second, third, and fourth subequal; the following 

 shorter than preceding and subequal. Lateral angles obtuse. First 

 five segments of abdomen together, about equal the last ; last twice as 

 broad as long, arcuate behind (thus differing from the preceding 

 species). Stylets reaching as far backward as extremity of caudal 

 segment ; branches straight and rounded at apex. 



Cymothoa recta. 



Corpus lat£ lineare, lateribm parallelis. Caput paulo transversum, 

 antice arcuatum, inter segmenti sequentis processus plus dimidio in- 

 clusum, processubus extremitate latis, arcuatis vel subtruncatis. Abdo- 

 men basi angustum, segmento ultimo parce latiore quam thorax, multo 

 transversum, postice arcuatum, stylis extremitatem abdominis fere 

 attingentibus, ramis obtusis, externo parce arcuato. Articulus lmus 

 pedis 4H latus, postice versus basin subrectangulatus, non tuberculiger, 

 pedis 7mi perlatus, parce oblongus. 



Body broad linear, the sides being parallel. Head somewhat trans- 

 verse, anteriorly arcuate; processes from following joint projecting 

 beyond half the length of the head and very broad at extremity, 

 and rounded or subtruncate. Abdomen narrow at base, last seg- 

 ment sparingly broader than thorax, very transverse; posterior 

 margin arcuate, stylets reaching nearly or quite to line of extre- 

 mity ; stylets obtuse, outer slightly curved. First joint of fourth 

 pair of feet quite broad, posteriorly near base subrectangulate but 

 with no tubercle ; of seventh pair very broad, a little oblong. 



Plate 49, fig. 13a, animal in outline, enlarged two diameters; b, 

 leg of fourth pair; c, leg of fifth pair. 



Obtained by Dr. C. Pickering, at Hilo, Hawaii. 



The parallel sides of this species distinguish it from other species. 

 The first thoracic segment has the breadth about twice as great as the 

 length behind the head ; the next three segments are each about 

 three times as broad as long, and the last three, about five times as 



