392 Records of the Indian Museum. [Vol. XVI, 



Macrophthalmus tomentosus, Eydoux & vSouleyet. 



1915. Maci'oplitlial uitis fomenfosiis, lesch, Zool. Meded. Mits. Leiden, 1, 

 p. 193, pi. ix, fig. (2. 



The only recent example of this species that I have seen is 

 that recorded by Alcock from the Mergui Archipelago. There are, 

 however, ten fossil or subfossil specimens labelled ' Sandoway,' a 

 locality on the Arakan coast of Burma. 



The latter specimens have been preserved in mud and have 

 evidently undergone considerable vertical pressure. The upper and 

 lower surfaces of the carapace have been partially crushed together , 

 frequently without causing any considerable distortion, and the 

 eyestalks and terminal segments of the legs have been broken off. 

 The tuberculation of the upper surface is exceedingly well pre- 

 served. 



By softening the mud with water and by vvorking at it with 

 a stiff brush I have been able to develop out the specimens to 

 some extent and to satisfy myself of their identity. They agree 

 precisely with the spirit specimen from the Mergui Archipelago 

 and though the chelae are invariably broken or absent, I have 

 been able to find clear indications of the " musical crest " on the 

 inner face of the merus. 



M. tomentosus has not hitherto been found in the fossil state. 



Macrophthalmus depressus, Riippell. 



igoo. Maci'ophfhalmits dep'cssits. .\lcock, Joiini. Asiat.Soc. Bengal. I. XIX. 



p. 830 (pari only). 

 1915. Macro ht/ialmus depressus. Tescli, Zool. Meded. Miis. Leiden., I, p. 



196, pi. ix, fig. 13. 



There appears to be some confusion about this species. Alcoek 

 records specimens from both Mergui and Aden, but in my opinion 

 only those from the latter locality are true M . depressus. The 

 Mergui specimens, which were also examined by de Man, and are 

 labelled M. depressus in his handwriting, belong in reality to a 

 closely allied undescribed form to which I have given the name 

 M . teschi. The differences between the two species are explained 

 overleaf. 



M. depressus has been recorded many times from the Red Sea 

 and is also known from the Persian Gulf (Nobili), Bombay and 

 Pondicherry (Guerin) and Rameswaram I. (Henderson). Haswell's 

 record from Australia (under the name M . affinis) is almost certain- 

 ly erroneous. The two specimens from Mergui examined by de 

 Man belong to M. teschi and the single female recorded by the 

 same author from Atjeh is probably also to be referred to that 

 species. 



