HYPERIDEA. 985 



Lestrigonus Fabreii? Edwards. 



Plate 67, fig. 10 a, animal, much enlarged; h, extremity of second 

 pair of legs ; c, extremity of abdomen, upper view showing stylets ; d, 

 profile of head, showing mouth organs in lateral view. 



Sooloo Sea. 



Length, one and a half lines. The specimen here described has 

 many of the characters of the L. Fabreii; yet for want of a full 

 description of that species, we cannot pronounce on an identity. The 

 facets cover a very large part of either side of the head. The front of 

 the head in profile is somewhat concave near or below the base of the 

 superior antennae, but much less so than in Edwards's figure. The 

 four posterior segments of the thorax are distinct, and the first three 

 are coalesced along the back. Antennae longer than the body ; two 

 fringes of hairs on under side of third basal joint of the superior an- 

 tennse, very delicate and close ; apex of next joint not acute ; nagella 

 very slender, consisting of very long joints, excepting part of flagellum 

 of superior pair, near the basal portion of the antennae ; twenty joints 

 or more to the flagellum of this pair. First and second pairs of legs 

 nearly equal, terminating in an imperfect hand, the lower apex of the 

 antepenult joint being prolonged to about half the length of the next 

 joint, which is subcylindrical. Third and fourth pairs equal; seventh 

 pair longer than either of the preceding ; these legs naked, and with- 

 out a longish seta on fourth joint, as in the ruhescens; tarsus about 

 one-third the length of the preceding joint. Basal joint in fifth, sixth, 

 and seventh pairs narrow, rounded or obtuse at apex. Caudal segment 

 of abdomen about half as wide as preceding, and nearly half as long 

 as posterior caudal stylets, exclusive of the two terminal lamellae. 

 Posterior caudal stylets rather broad, the lamellae equal, broad oval- 

 lanceolate, about one-third as long as basal portion. 



According to Milne Edwards, the legs of the first pair in the Fabreii 

 are cylindrical, and differ from those of the second pair ; but we sus- 

 pect that this form was observed in consequence of the leg being 

 turned with the upper margin to the eye. This is the natural posi- 

 tion both of the first and second pairs, in a side view of the animal, 



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