SOME NEW PENTASTOMIDS. 121 



5. POROCEPHALUS BIFURCATUS Var. MEDITERRANEUS, llOV. (Text- 



fig. 4, E, F.) 



There were 10 specimens, all from Zamenis gemonensis : viz. 

 4 females, 2 males, and 4 small specimens much contracted, which 

 are also probably males. 



The body is relatively more slender than in var. orientalis, and 

 much darker in colour; The length of the males varies from 

 10 to 15 mm., that of the females from 20 to 30 mm. 



The annulations are 40 to 45. 



In conclusion, my thanks are due to the authorities of the 

 Zoological Society for placing the material at my disposal and to 

 Dr. H. W. Marett Tims for his advice and assistance. 



