540 MR. E. J. MiERS ON [Jutie 6, 



Palinurus longimanus, var. maxjritianus, n. (Plate XXXVI. 



fig-1-) 



The carapace is of the form usual in Palinurus, with the cervical 

 suture very distinctly defined, and is everywhere covered with flattened 

 tubercles whose anterior margins are bordered with a fringe oi setce; 

 the tubercles are smaller upon the hepatic and antennal regions ; the 

 median rostral spine is small and narrow-acuminate ; on either side 

 of it are two spines, and behind it, in a median longitudinal series, 

 are three other small spines, of which the second is the largest ; the 

 supraocular spines are very large, the upper margin of each is 

 armed with two smaller spines, the lower margin is entire ; behind 

 each of the supraocular spines, on the gastric region of the carapace, 

 are three spines in a longitudinal series ; below these are placed three 

 spines on the hepatic region ; there is a strong spine, followed by 

 a second much smaller spine, on the antennal region of the carapace 

 below the eyes ; about eight spines are placed in a transverse series 

 along the front of the cardiac and branchial regions, immediately 

 behind the cervical suture. The segments of the postabdomen 

 are without spines or tubercles (except the lateral and marginal spines), 

 and are marked with transverse linear sutures, which are often in- 

 terrupted, and vary in number and disposition on the several segments; 

 their arrangement will be best understood by a reference to the 

 figure ; the lateral lobes in the first to sixth segments terminate in 

 a strong spine, which, in the second to fifth segments, is long and 

 curved backward, and is followed by a small spinule on the rounded 

 j)osteio-lateral margins. On the sternal surface of the body, on those 

 segments with which the second to fourth legs are articulated, a 

 prominence bearing two spines or tubercles is situated on each side 

 of the middle line of the body ; the last sternal segment is armed 

 with a strong spine on each side of the middle line of the body and 

 one near the bases of the fifth legs; the inferior surface of the first 

 postabdominal segment is armed with about six spinules, the second 

 to fifth segments with two, and the sixth segment with three spinules. 

 The eye-peduncles are of moderate thickness ; the eyes (with their 

 cornese) are very large and subspberical ; the median portion of the 

 ophthalmic segment is visible in a dorsal view, as in the typical 

 Falinuri; and in form the antennulary segment with its stridu- 

 lating ap]iaratus, and the antennules and antennas, do not essen- 

 tially differ from the same parts in P. vulgaris; the flap of the stri- 

 dulating apparatus is indurated : the antepenultimate joint of the 

 peduncle of the antennules nearly reaches to the end of the peduncles 

 of the antennae. The antennse are broken, but are considerably longer 

 than the body ; the joints of the peduncles are covered with flattened, 

 ciliated, squamiform prominences resembling those of the carapace, 

 and are aimed with strong spines ; the flagella have a line of longish 

 hairs on their under surface. The left chelipede (the only one pre- 

 served) is very long and robust, more than half as long again as the 

 first ambulatory legs ; the merus has its upper margin com{)ressed 

 and subacute, armed with a spine at the distal end of its uj)per 

 margin ; behind it, and at some distance from one another, are two 



