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°8 



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SCOEPIONES. 







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small 



Bubtubercular crests; at the anterior extremity of the lateral keel on the outer side are some 

 tubercles forming a short transverse crest. Tail about five and a half times as long as carapace, wmcn 

 is slightly longer than the fourth, and shorter than the fifth segment, the inferior and lateral intercannal 

 spaces rather coarsely granular, the anterior segments sparsely so, the posterior thickly ; upperside ot 

 first, second, and third, and in a lesser degree of the fourth segment finely and closely granular in the 



middle, the granular area broader behind; all the keels coarsely granular, the inferior and superior lateral 



posteriorly denticulated, indications only of a median lateral keel on the second segment ; first se 

 slightly wider than the second, a little narrower than the third, which equals the fifth, fourth the widest 

 of all ; upperside of fourth excavated, of fifth with a median groove ; fourth rather more than one-third 

 wider than long, fifth less than twice as wide as long ; vesicle granular, as wide as the brachium, a little 

 wider than high ; no subaculear tooth. Chelce very finely granular ; crests strongly granular ; hand 

 shagreened, scarcely keeled, its width exceeding that of the brachium, and about three-fourths the length 

 of the underhand, which is about half the length of the movable finger ; the latter exceeding the fifth 

 caudal segment, with a strong basal lobe, and furnished with eight median rows of teeth. Pectines very 

 broad at the base, furnished with from (16) 17-19 teeth. 



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c? . Tail only slightly longer than in female, but much thicker ; fourth segment almost as wide as long, fifth 







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segment only one-third wider than long, and as wide as the fourth or wider. Chelce with hand very 

 wide, its width nearly equal to length of underhand, and half the length of the movable finger ; the two 

 fingers in contact only in the distal third of their length, proximally strongly arched away from each 

 other so as to leave a long and wide space between them. 







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Measurements in mm. — 5 . Total length 104, carapace 11*5; tail 66, width of first segment 6*5, of fourth 7, 

 length of first 8, of fourth 11; width of brachium 4, of hand 5-5 ; length of underhand 7, of movable 



finger 14. tf . Total 



length 98 



carapace 11 ; tail 63, width of first segment 6-5, of fourth 8*5, 



length of first 7'5, of fourth 10 ; width of brachium 4, of hand 6*6 ; length of underhand 7'3, of movable 

 finger 13*3. 







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Hah. Mexico (Mus. Brit.). — Brazil; Cuba; Haiti. 





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The description given above is taken from adult specimens in the British Museum, 

 which are ticketed Mexico, and belonged originally to Keyserling's collection. The 



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Museum also has examples labelled Brazil. These localities require confirmation. 





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The only authentic localities known for the animal are Cuba and Haiti. 



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ISOMETRUS 









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Isometrus, Hempr. 





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Pocock (prior to 1891), Kraepelin [Jahrb. Hamb. Wiss. Anst. 

 subsequent authors. 



also of Thorell, Karsch, Simon, 



viii. p. 244 (1891)], and of 











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-if 



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^Differing 







about five or six rows of teeth set end to end without overlapping, also with an iuner series consisting of 

 six large teeth set close to the apices of the median rows, and an outer series of large teeth corresponding 

 to those of the inner series, and placed in a straight transverse line with them. 





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Type i". europceus, Linn. {Scorpio). 



Distribution. Confined to th 

 Queensland, with the exceptk 



by commerce into almost all trc 



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Oriental region, and 

 of the type-species 



g 



from Ind 



hich has been 



as far as 

 ansported 





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l. Isometrus europaeus 





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Scorpio europceus, Linn. Syst. Nat. ed. 10, p. 625 (1758) \ 

 Isometrus europaus, Lonnberg, Ann. & Mag, Nat. Hist. 



British India, Araclin. p. 46 (1900) 3 . 



i. p. 86 (1898) 2 j Pocock, Fauna 



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