1900.] INSECTS AND ARACHNIDS FEOM SOMALILA.ND. 59 



This form is evidently allied to the typical P. pallidus ; but 

 until adults of the latter come to hand for comparison, it is im- 

 possible to say what the exact relationship between the two may 

 be. The original examples of P. plidlipsi are a pair of females 

 obtained at Dooloob. Mr. Lort Phillips subsequently procured an 

 adult male and a young female on the Gooiis Eange of mountains. 

 The former has 17-18 pectinal teeth, a longer tail and larger vesicle 

 than the female, and lobate movable fiuger on the chela. The 

 young one is as large as a co-type of P.jyalUdtis, the carapace in the 

 two measuring 11 mm. Moreover the posterior tarsal lobe is tipped 

 above with bristles as in P. pallidus, not -with a spine as in the adult 

 P. phllHpsi. But the shape of the hand in the young P. phdUpsl 

 is different, this organ being very uoHceably narrower, and the 

 tubercles on its upperside are much sharper and more strongly 

 defined. 



The following actual measurements (in millira.) of the two 

 examples may be advantageously compared : — 



Total length Length of Length of ^^''"gtb of width of 



(w.thont Carapace. ,,,.,,1;.,^. undeiiand. T"'*'^^'' hand. 



vesicle). fingei". 



As will be seen, there is practical identity of measurements ' 

 except where the width of the hand is concerned. 



Pan DIN us colei (Pocock). 



Scorpio colei, Pocock, Ann. Mag. Xat. Hist. (6) xviii. p. 180, 

 pi. xi. figs. 2, 2rt (1896). 



Pandinm colei, Kraepelin, Das Tiei-r., Scorpiones, &c. p. 120 

 (1899). 



Loo. Berbera and Gooiis Mountains {Fj. Lort Phillips). In 

 British Museum. 



This species was based upon a subadult specimen from Berbera. 



Mr. Lort Phillips subseiiuently procured in the Gooiis Mountains 

 and kindly sent to the British Museum three additional examples, 

 an adult male and female aud a youug specimen considerably smaller 

 than the type. The characters upon which the species was based 

 prove perfectly constant. The adult male aud female are much 

 alike ; the former, however, has the terga of the abdomen finely and 

 closely granular posteriorly, whereas in the female they are nearly 



' The difference in total length in this and in many other cases is due to the 

 degree of distension of the abdominal region. The length of this region is so 

 very liable to alteration in accordance with the mode of pieservation of the 

 specimen after death, and depends so largely upt;n the faiating or full-fed, 

 pregnant or not pregnant condition of the Scorpion, that the relative lengths 

 of the tail as compared with the trunk, which Kraepelin. Karsch, and others so 

 frequently quote, have but little importance. The length of the carapace, which 

 does not vary, should be taken as standard for comparison. 



[57] 



