42 BUTHIDJE. 



frontal area of the carapace is still smoother, the large granules 

 noticeable in L. shoplandi being practically absent, the anterior 

 border being polished and glossy ; the supero-lateral keel on the 

 5th caudal segment and that on the upper side of the brachiuni 

 are stronger and more granular, and the fingers of the hand are 

 longer, the movable being more than twice the length of the 

 underhand, the two together being considerably longer than 

 the 1st, 2nd, and 5th caudal segments. In L. shoplandi they are 

 subequal. Pectinal teeth 22. 



Measurements in mm. — Total length 32, carapace 4, tail 20, 

 movable finder 4. 



Loc. Calcutta. 



30. Lychas fese, Thorell, Ann. Mvs. Genova, xxvii, p. 569, 1889 

 (Isometrusj ; Kraep. Tierr., Scorp. p. 51, 1899 (Archisometrus). 



Allied to L. shoplandi and loevifrons, with long tibial spurs and 

 deeply impressed sternum. Colour of carapace and terga black ; 

 sterna marginally black, the last almost entirely black, yellowish 

 along the lateral and posterior margin, and marked with a crescentic 

 yellow stripe in front ; tail nearly black, the segments yellow in 

 front ; vesicle yellow ; humerus of chela yellow, with a few small 

 spots at its distal end ; brachiuni yellow, with its upper surface 

 mostly black ; band black all over, fingers yellow, also a black 

 spot on upper side of trochanter of chela ; coxa of chela black 

 apically and externally ; legs almost entirely black externally. 

 Carapace and terga granular as in L. shoplandi, but no large 

 isolated granule representing lateral crest such as is seen in both 

 adults and young of L. shoplandi. Tail as in the latter, but more 

 closely granular. Pectinal teeth 20. 



Measurements in mm. — Total length 2fi, carapace 3, tail 15. 



Loc. Burma : Shwegoo, near Bhamo (Fea). 



Although the only known specimen of this species is certainly 

 young, it represents a form differing in the blackness of its appen- 

 dages and tail from the young of L. shoplandi. which resemble the 

 adults in colour. 



Subfamily CENTRUMN/E. 



< Vntrurini, Pocock, A. M. K. H. (6) xvii. p. 428, L896 ; Kraep, 

 Tierr., Scorp. etc. p. (!4, 1899 ( = Isomctrini and Centnuini, Kraep. 

 Jb. Hamb. wiss. Anst. viii. p. 149, 1891). 



Legs of 3rd and 4th pairs without tibial spurs. 



Distribution. Eastern Mediterranean area( Plesiobvthus) ; Oriental 

 ltegion, thence eastwards as Ear as Australia (Lsometrus); Sonoran 

 and Neotropical Regions (Zabins, Tityns, and Centrums). 



