REPORT ON THE ANOMURA. 121 



spinules are absent, the lateral rostral denticles are less markedly spinulous and of 

 smaller size; while the median rostral spine is very long, narrow, and acute. The striae 

 on the carapace are well marked, and fringed with tolerably long hairs. The merus of 

 the external maxillipedes is much shorter than the ischium, and its inner margin bears 

 two or three slender spinules, while, in some specimens at least, one or two obscure 

 dentations are present on the outer margin. In the single specimen which still retains 

 the chelipedes (a male) the fingers are separated by a hiatus, whereas Haswell states that 

 they do not gape ; this cannot, however, be considered a difference of much importance. 

 The largest sjaecimen measures about 12 mm. in length. The types came from the coast 

 of Queensland. 



Galathea pusilla, Henderson (PI. XII. fig. 1). 



(raZattea pz«si7Za, Henderson, Ann. and Mag. Nat. Hist., ser. 5, vol. xvi. p. 407, 1885. 



Characters. — The carapace is comparatively smooth, only about eight transverse striae 

 being present, and these are fringed with very short hairs ; the regions are ill defined, and 

 each lateral border bears eight or nine spinules. The gastric area is armed anteriorly 

 with two pairs of spinules separated by a rather wide median interval. The rostrum 

 is broadly triangular^ and slightly depressed, a prominent spine is placed at either 

 side of the base immediately over the ocular peduncle, and a minute spinule is situated 

 on either side near the apex (in one specimen this spinule is absent); the apex is narrow 

 and acute. 



The ischium of the external maxillipedes has its outer border prolonged distally into 

 an acute spine ; the merus is much shorter than the ischium, the inner border is armed 

 near its middle with a curved acute spinule, and a similar projection is present at 

 the distal end of the outer border. The anterior prolongation of the first antennal 

 peduncular joint present in most (if not all) species of Galathea is very long, slender, 

 and acute, indeed, it is visible from above as a spine lying outside the eye-stalk. 



The chelipedes (which have become detached) are pubescent, and the lateral margins 

 and upper surface of the merus, carpus, and propodus bear a few curved spinules ; the 

 fingers do not equal the palm in length, and their opposed edges are irregularly toothed. 

 The ambulatory limbs have the anterior borders of the meri and carpi armed with 

 short spinules ; the dactyli are more than half the length of the propodi and almost 

 straight, with the posterior margin bearing a series of minute horny spines. 



The abdominal segments are comparatively smooth, the striae being almost devoid of 

 hairs. 



Length of body of a male 10 mm., of chelipede (detached) 11 mm., of carapace 5 mm., 

 of rostrum 1'8 mm. 



' In tlie figure it is represented as rather narrower than it actually is, and the size of the lateral apical spinules is 

 exaggerated. 



(ZOOL. CHALL. EXP. — PART LXIX. 1888.) Zzz 16 



