REPORT ON THE AMPHIPODA. 1309 



figure represents the specimen in a bent position, magnified to rather more than twice the 

 natural size. Pagenstecher does not give any reference to the source of his information, 

 but it was no doubt obtained in one way or another from the notes of v. Willemoes Suhm 

 himself. The statement that eyes are wanting must be received with reserve. "The red 

 pigment-spots about 1^ mm. in diameter on the first segment," that is on the head, as shown 

 in the figures, correspond in size and position with the eyes as usually met with in this 

 genus, and the crystal cones being in any case few and minute might easily be overlooked 

 by any one unacquainted with the genus but accustomed to the multitudinous ocelli 

 commonly found in the Hyperina. In fig. 2a, a 1 indicates the lower antennas, <r the 

 upper, obi. the epistome or Oberlippe. 



Lanceola eestiva,n. sp. (PI. CLIIL). 



Head rather short but very deep, with a very small triangular rostrum ; the lateral 

 margin irregular, the front of the head large and flat, with a central carina running 

 between the antennas which project above the mouth-organs ; the central dorsal line of 

 the whole animal scarcely carinate though the back is angled both here and laterally ; the 

 first three segments of the pleon with numerous spines or setse round the convex lower 

 margins. 



Eyes doubtful, seemingly minute, prominent. 



Upper Antennas. — The peduncle of three short joints, the second and third suc- 

 cessively shorter ; the flagellum with its first joint broad, curved, very long, narrow 

 near the base, acute at the tip, its three edges serrate, the convex upper one closely so ; 

 just within the apex there is a minute second joint, an apical' third joint having probably 

 been broken off. 



Lower Antennas. — Second joint short, with well-pronounced decurrent gland-cone ; 

 third joint about three times as long as the second, slightly bent, with three edges ; the 

 fourth joint elongate, longer than the whole of the upper antennas, three-edged, the 

 upper margin minutely serrate ; the fifth joint scarcely so long as the fourth, much 

 more slender, at first three-sided, then laminar, strongly tapering, its upper edge finely 

 ciliated ; the slender apex divided into two or perhaps three little joints. 



Epistome prominent, helmet-shaped. 



Upper Lip with the outer plate apically deeply cleft, the inner plate much shorter, 

 transversely oval. 



Mandibles similar in structure to those of Lanceola pacifica, the triangular secondary 

 plate of the left mandible a little serrate on the edges, the groove or ridge over the 

 spinous region strongly developed, convex ; the palp much longer than the trunk, the 

 first joint short, distally widened, the second joint very long with several slender setse or 

 setiform spines on three edges of the slightly widened distal part ; the third joint long 



