436 MR. J. E. HEjNDERSON— A CONTRIBUTION 



251. Alphetjs Hippothoe, De Man. 



A. Hijyjjothoe, De Man, Mergui Crust, p. 268, pi. xvii. figs. 1-5 (1888). 



Rameswarfim, six specimens {J. R. H.). 



This sj^ecies is allied to A. Mhoardsii, which it resembles in size, the rounded ocular 

 hoods, and the general form of the chelae, but is distinguished by its stouter amliulatory 

 legs, those of the second and third pau-s with the meral joints broad and flattened, and 

 armed with a distal spine on the lower margin ; the rostrum is more strongly marked 

 than in A. Mhoardsn, and in some cases extends back on the carapace, though faintly, 

 almost to the middle. 



Distribution. Mergui ; Pulo Edam and Amboina (Be Man). 



252. Alpheus frontalis. Say. 



A. frontalis (Say), Milne-Edwards, Hist. Nat. Crust, t. ii. p. 35G (1837) ; id. Atlas, Cuv. Riigiie Anim. 

 pi. liii. fig. 2 (1849). 



Tuticorin [Thurston). 



Distribution. Australia {Milne-Edtvards) ; Tahiti (Seller) ; Loo Choo Is. ; Samoa ; 

 South Sea (Ortmann). 



253. Alpheus l^.vis, Randall. 



A. IcBvis (Rand.), Ortmann, Zool. Jalirb. Bd. v. Abtli. f. Syst. p. 487 (1891), ubi synon. 



Eameswaram and Tuticorin {Thurston). Not uncommon on the reef at Rameswaram 

 (J. B. n.). 



Distribution. From the Red Sea and E. Africa to Japan, Sydney, and tlie Pacific 

 (Tonga, Eijis, Tahiti, Sandwich Is., &c.). 



254. Alpheus Neptunus, Dana. 



A. Neptunus, Dana, Crust. U.S. Explor. Exped. pt. i. p. 553, pi. xxxv. fig. 5 (1853). 



Kurachi (Brit. Mus.). Common on the reef at Rameswaram [J. B. H.). 



Both Miers and De Man regard this as merely a variety of A. minor, Say, which is 

 common on the east coast of the United States. 



Distribution. From tlie P^ed Sea to China, Japan, Port Jackson, and the west coast of 

 Central America. 



Genus Dorodotes, Bate. 



255. Dorodotes levicarina. Bate. 



D. levicarina, Bate, ' Challenger' Macrura, p. 680, pi. cxii. fig. 5 (1888). 



Gulf of Martaban ( Oates). 



The single specimen is a female with ova, measuring 51 mm. in length, including the 

 rostrum, which is 11 mm. long. 



Distribution. Arafura Sea, 28 fathoms {Bate). 



