TO INDIAN CAECINOLOGY. 419 



216. Diogenes rectimanus, Miers. 



D. rectimanus, Miers, 'Alert' Crust, p. .3(12, pi. x.wii. fig. C (1884). 



Madras, common ; a large series {J. E. U.). 



The ophthalmic process is narrow and entire, not exceeding the oplitlialmic scales ; 

 the latter are rounded, and with few marginal spinules. The antennal acicle is undivided, 

 with the inner margin spinulose. Tlie lower margin of the left hand is straight and 

 spinose ; the outer surface of this joint is flattened and slightly pubescent, with a few 

 spinules chiefly arranged along an oblique line near the upper margin, which is itself 

 dentate ; the fingers are very short, and the lower border of the immobile one is in a 

 straight line with the lower border of the hand. 



The average length is about 25 mm. 



Distribution. Prince of Wales Channel, N. Australia ; 7 fathoms {Miers). 



Genus Pagtjrus, Eabricius. 



217. Pagurus PUNCTULATrs, Olivier. 



P. punctulatus (Oliv.), Milne-Edwards, Hist. Nat. Crust, t. ii. p. 222 (1837) ; Dana, Crust. U.S. 

 Explor. Exped. pt. i. p. 451, pi. xxviii. fig. 4 (1852). 



Tuticorin {Thurston) ; common on the reef at Rameswaram (J. B. H.). 



This common species reaches a considerable size. The eye-stalks, even in spirit 

 specimens, are of a very deep red colour, and the corneaj are defined by a white line. 



The Cancer megistos figured by Herbst is undoubtedly a representation of the present 

 species, but the draughtsman has supplied it with an altogether fanciful abdomen. 



Distribution. Prom the P^ed Sea and E. Africa to China, Australia, and the Pacific. 



218. Pagurtjs Hessii, Miers. 



P. Hessii, Miers, 'Alert' Crust. !>. '1C>\, pi. xxviii. fig. A (1884). 



P. similimanus, Henderson, 'Challenger' Anoraura, p. 59, pi. vi. fig. 6 (1888). 



Gulf of Martaban, two specimens {Oates) ; Madras, not uncommon {J. Jl. H.). 



This species, in regard to its chelipedes, has the general appearance of a CUbanariiis, Ijut 

 its cephalic region is that of a true Pacjimis. The colour-markings are characteristic, 

 the hands being red, especially on the under surface, while the under surface of the 

 propodus of the first and second ambulatory legs, and the sides of the eye-stalks, are 

 banded with reddish brown. The figure in the ' Alert ' Crustacea somewhat exaggerates 

 the size of the eyes, and Miers states that the antennular peduncles scarcely reach the 

 end of the eye-stalks, whereas they slightly exceed these, and this arrangement is shoAvn 

 in his figure. I have re-examined my type of P. similimanus, and find it identical with 



that of P. Hessii. 



The largest specimen, a male, is 0.5 mm. long, the right chclipcde 50 mm., and the 



eye-stalks 10 mm. long. 



Distribution. Arafura Sea {Jliers) ; Celebes Sea {Henderson). 



