1566 THE VOYAGE OF H.M.S. CHALLENGER. 



other specimens from the same locality probably belonging to this species, one of them 

 a female (mounted in Canada balsam), which is almost covered with large stellate 

 pigment-markings, and has numerous young ones. From " Amphipronoe longicornuta," 

 Gdes, this species is distinguished by having all the segments of the perseon distinct 

 and by the curved rami of the third uropods. 



Lycsea pauli, n. sp. 



Upper Antennas. — The upper margin of the large first joint of the flagellum not 

 angled. 



Lower Antennas as in Lycasa vincentii. 



Mandibles. — The cutting edge nearly straight, not broad, finely striated, with a 

 slight prominence at the upper corner, the lower rounded ; the secondary plate of the 

 left mandible nearly as long as the principal. First joint of the palp longer than the 

 two following together, and more than twice as broad as either ; the third joint slightly 

 longer than the second. 



Gnathopods nearly as in Lycasa vincentii, but the distal or palmar margin of the 

 wrists less hollowed, the serrate part of it being straight. 



Third Per&opods. — The first joint broadly oval, narrow at the neck, distally 

 broad, the much rounded and faintly serrate distal extremity of the hind margin 

 projecting much behind the following joint ; the third joint longer and broader than 

 the fourth ; the fourth strongly pectinate on its distal margin on the inner surface ; the 

 concave front margin of the fifth joint faintly pectinate. 



Fourth Perasopods. — The first joint more regularly oval than that of the preceding 

 pair, about the same length with that, but considerably narrower ; the third, fourth, 

 and fifth joints also narrower as well as shorter than in the third pair. 



Fifth Perasopods. — The first joint longer than broad, nearly as broad as the first 

 joint in the preceding pair, narrowed at the two extremities, the front margin straight, 

 the hinder very convex ; the second joint not longer than broad ; the third a little 

 longer ; the fourth narrower than the third, longer than the second and third together ; 

 the fifth longer than the fourth ; the finger very small, with a small protruding piece 

 above, the bent tongue-like piece below extending much beyond this. 



Pleopods with about ten joints to the rami. 



Uropods. — Peduncles of the first pair scarcely twice as long as the rami, strongly 

 pectinate on the outer margin ; the rami reaching a little beyond the telson, the outer 

 rather the longer, pectinate on both margins, the inner pectinate on the outer margin 

 and lower part of the inner ; inner ramus of the second pair pectinate on both margins, 

 reaching much beyond the peduncle of the first pair ; the outer ramus much shorter and 

 narrower than the inner, pectinate on the inner margin ; the coalesced inner ramus of 



