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



part of the carapace, and its lateral margin is armed with seven or eight minute denticles ; 

 the lateral border of the carapace bears from eight to nine spini;les. The merus of the 

 external maxillipedes is short, with the inner margin bispinose. In the female the 

 clielipedes are more slender than in males. This species appears to be widely distributed ; 

 it has been recorded from the Philippines and the Australian coast, and I have recently- 

 examined specimens which were taken by Mr. E. Thurston off the Pearl Banks at 

 Tuticorin, South India. 



Galathea longirostris, Dana, from the Fiji Islands, is a closely allied species, but the 

 rostrum is apparently narrower, the spinules on the margins of the carapace are less 

 distinct, and the second abdominal segment is acute on either side. 



Galathea australiensis, Stimpson (PL XII. fig. 5). 



Galathea australiensis, Stimpson, Proc. Acad. Nat. Sci. Philad., p. 89, 1858. 

 „ ,, Haswell, Catal. Austral. Crust., p. 161, 1882. 



Hahitat. — Station 190, Arafura Sea; depth, 49 fathoms; bottom, green mud. A 

 female without chelipedes or legs. 



This agrees on the whole with Stimjjson's brief diagnosis. The ischium of the 

 external maxillipedes has a median curved ridge on its outer surface ; the merus is 

 slightly shorter than the ischium, with two well-marked spines on the inner margin, one 

 of which is situated near the distal end. The tjrpes were taken at Port Jackson. 

 Haswell is of opinion that it may have to be united with Galathea spinosirostris, Dana. 



Galathea subsquamata, Stimpson (PI. XII. fig. 4). 



Galathea subsqtiamata, Stimpson, Proc. Acad. Nat. Sci. Philad., p. 90, 1858. 



Habitat. — Stations 204a or 204b, off" Tablas Island, Phili]Dpines ; depth, 100 to 115 

 fathoms ; bottom, green mud. A female (bearing ova) without chelipedes or legs. 



This specimen is apparently closely allied to or identical with Stimpson's species. 

 The striae on the anterior gastric and hepatic areas are short, wavy, and scale-like, those 

 on the hepatic area and the front row of the gastric area being tipped by spinules. The 

 rostrum bears four well-marked acute spines on each side, and its upper surface is 

 provided with numerous indistinct scales of small size ; each lateral spine is separated by 

 a rounded notch from the base of the one immediately in front. The ischium of the 

 external maxillipedes has its outer margin produced into a strong spine ; the inner border 

 of the merus is trispinose — the third or distal spine being of small size — and the outer 

 border is provided with two small spines near the distal end ; the outer surface of both 

 merus and carpus is obscurely squamose. The basal joint of the antennular peduncle is 



