10 Prof. T. Thorell on the 



2. The fifth caudal segment smooth below, without a depressed semi- 

 elliptical area Telkqonus, (0. L. Koch), 1836. 



Type T. versicolor, C. L. Koch, 1836. 



-B. Tail keeled at least on the underside of the fifth joint. 



Cercophonius, (Pet.), 1861. 

 Type C. squama, (Gerv.), 1844^ 



Fam, III. VejovoidsB. 



Sternum with parallel sides, subpentagonal, rather small, 

 about double as broad as long. Intermediate lamellce of the 

 combs generally (always?) numerous, most of them rounded 

 and small (little or not larger than the fulcra), and arranged 

 in 1-3 longitudinal rows. The movable mandibular linger 

 armed with one or two rows, the immovable Avith a single row 

 of teeth. The hands subfusiform or ovate, their height or 

 thickness in general greater than their least breadth. Three 

 (or four) lateral eyes on each side, forming a row curved 

 inwards^. No spine or tooth under the sting. 



1. Tlie movable mandibular finger provided with a single row of teeth in 

 the upper margin. Dorsal eyes placed rather far in front of cepha- 



lothorax. The tail keeled Vejovis, C. L. Koch, 1836^. 



Type V. intrepidus, n. * 



^ The genus *Aca7ithochirtcs, Pet., which appears to differ from Cerco- 

 phonius almost only by the hands being armed with a spine on the inner 

 side, is probably, as has already been suggested by Gerstacker (" Bericht 

 iiber die wissensch. Leist. im Gebiete d. Entom. 1861"), founded on the 

 male of Cercoph. squama. I have myself seen a species of J'ityus in which 

 the male is provided with a similar spine, whereas in the female this spine 

 is represented only by a low tubercle. 



^ According to Peters, these scorpions have two principal lateral eyes 

 and one or two accessory eyes. 



3 Not being acquainted with any of C. L. Koch's Vejovis-s^eci&s, I 

 have been obliged to give an apparently new species as the type of the 

 genus. 



* Vejovis intrepidus, n, 



Ferrugineo-fuscus, vesica ferrugineo-testacea, manibus pallidius ferrugi- 

 neis, costis obscurioribus ; cephalothorace crasse granuloso, segmenta 

 caudae 1™ et 2"" longitudine eequante, segmentis abdominalibus antice lae- 

 vibus, nitidis; cauda cephalothorace circiter quadruplo et dimidio lou- 

 giore, latiore quam altiore, carinis superioribus in segmentis l°-4'" den- 

 ticulatis, dente apicali fortiore, carinis inferioribus granulosis, mediis 

 segmentorum anticorum Isevibus tamen, segmento 5° in marginibus 

 superioribus tenuius granuloso, carinis inferioribus subtiliter dentatis ; 

 palporum humero supra piano, granulis tantum minutissimis sparso ; 

 manibus crassis, tumidis, costis 8 longitudinalibus granulosis, digito 

 mobili manu postica circiter dimidio longiore ; pectinum dentibus 

 circa 22. Long, circa 84 millim. America, Mexico. 



