15 



2 ovisacs. Moreover the genital segment in the female does not exhibit any trace 

 of a subdivision, no transversal suture existing dorsally. The genus as yet only 

 comprises a single species, to be described below 1 ). 



6. Sunaristes paguri, Hesse, 



(PI. VI & VII). 



Sunaristes paguri, Hesse, Ann. d. 8c. Nat., Ser. V, Vol. VII, p. 205. 

 Syn : Longipedina paguri, W. Miiller. 



Specific Characters. Female. Body extremely slender and elongated, 

 with very thin and flexible integuments. Anterior division slightly widening in 

 front, cephalic segment rather large, exceeding in length the 3 succeeding segments 

 combined, rostral plate broad and obtusely truncated at the tip. Last segment of 

 metasome of about the same width as the preceding one. Urosome occupying more 

 than half the length of the whole body, genital segment very large, about equal- 

 ling in length the 2 succeeding segments combined, and scarcely at all dilated in 

 front; genital region with 2 unequal setiform appendages on each side. Last 

 segment much shorter than the preceding ones. Caudal rami about twice the 

 length of that segment, rather narrow and somewhat attenuated distally, apical 

 setse slender and indistinctly ciliated, one of them attached to the outer edge at 

 some distance from the tip. Anterior antennae of moderate length and somewhat 

 attenuated, with the apical filaments very slender. Posterior antennae with the 

 outer ramus somewhat shorter than the inner. The 2 anterior pairs of natatory 

 legs with both rami of about equal size, the 2 posterior pairs with the inner 

 ramus shorter than the outer, and carrying on the tip 2 setae and a short spine. 

 Legs of last pair consisting each of only a very small lamella edged with 4 setse, 

 the outermost one very slender. Ovisacs (according to Hesse) narrow fusiform 

 and greatly diverging. 



Body semipellucid, of a whitish colour with a yellowish tinge. 



Length of adult female reaching 3 mm. 



Remarks. As above stated, this form was first described by Hesse under 

 the above name. Subsequently the same form was observed by W. Miiller, who, 

 being unaware of the earlier description of Hesse, regarded it as new, and re- 

 corded it under the name of Longipedina paguri. It is an easily recognizable 

 form, and perhaps the largest of all known Harpacticoida. 



Occurrence. Only a solitary female specimen of this interesting form has 

 hitherto come under my notice. It was taken up in the dredge, together with 



*) In a just received paper Mr. A. Scott describes 3 additional species from the In- 

 dian Ocean. 



