1920] Chamberlin: Myriopod Fauna of Bermuda 283 



Localities: Bermuda Id. (Yale Exped., 1898, A. E. Verrill, 

 1901, O. Bryant, J. H. Comstock) ; Flatts Inlet; Hamilton 

 (T. Barbour, 1903); Tucker Id. (A. E. Verrill, 1901); Paynter's 

 Vale (Bermuda Biol. Sta. for Research, E. L. Mark, 1903) ; 

 Hungry Bay (O. Bryant) ; Harrington Sd. (Bermuda Biol. Sta. 

 for Research, R. W. Glaser). 



Evidently a very common species on the islands. Pocock's 

 Lithobius hermudensis agrees so nearly with the praematurus 

 stage of provocator that I regard them as the same. While in 

 specimens of the length designated by Pocock the prosternal 

 teeth are ordinarily 3+3 or 4+4, I have two individuals of 

 the praematurus stage 12 mm. long in which the prosternal 

 teeth are 2 + 2 and 2+3 respectively. 



While in general appearance this species much resembles the 

 common European and North American Lithobius forficatiis 

 Linne, Pocock's suggestion (1893, Loc. cit.) that it may not be a 

 truly distinct form is not well founded. Aside from the presence 

 of two claws on each anal leg and the lateral arming of the last 

 three pairs of cox«, an even more important difference is evident 

 in the prosternum, where the position of the special spine mesad 

 of the ectal tooth on each side distinguishes the Bermuda form 

 not only ivom forficatus , but apparently also from other species 

 of the genus in its more restricted sense. Correlated with this 

 position of the spine is the normal presence of a diastema 

 separating the outer tooth from the others, though this may 

 often show one or more interpolated minor teeth. 



SCUTIGERID^. 



Scutigera coleoptrata (Linne). 



Scolopendra coleoptrata Syst. Nat., ed. 10, 1, 1758, p. 637. 



Scutigera coleoptrata Pocock, Ann. and Mag. Nat. Hist., 1893, ser. 6, 11. p. 122, 124. 



Scutigera forceps Verrill, Trans. Conn. Acad. Sci., 1902, 11, p. 843. 



This house-centipede seems not to be uncommon on the 

 main island where it occurs in houses and cellars, etc. Verrill 

 also took a specimen at the old forts on Castle Id. Five speci- 

 mens which I have had for examination, seem not to differ from 

 Scutigera coleoptrata (Linne j, a species occurring commonly 

 also in the Azores, Madeiras and the western and more southern 

 parts of Europe. On the other hand, the species seems to be 

 also identical with the common North American form. At 

 any rate it seems impossible to separate alcoholic material 



