843 A. KH. Verrill—The Bermuda fslands. 431 
ete. during the day. The larger individuals are about six inches 
long; color dark chestnut-brown, blending into dull verdigris-green 
on the sides. Although its bite is venomous and somewhat painful, 
as a member of my party experienced, it is scarcely more so than the 
sting of a large wasp or hornet. 
Lithobius lapidicola Mein. 
This European species was recorded, with some doubt, by C. H. 
Bollman, 1889, from Heilprin’s collection. We found the same form 
rather common under stones. 
House Centipede. (Scutigera forceps Raf.= Cermatia forceps.) 
FIGURE 229. 
Not uncommon in cellars, ete. It often gets into the water tanks. 
This is a harmless and very useful species, for it devours large num- 
bers of flies, cockroaches, and other household insects. It is nocturnal 
in its habits, and runs with surprising agility at night. It is very 
Figure 229.—House Centipede (Scutigera forceps); natural size; from Webster’s 
International Dictionary ; after Marlatt. 
fond of moist places, like cellars and greenhouses. It is widely dis- 
tributed and has become common in the seaports of southern New | 
England during the past twenty years. 
I found a specimen in one of the ancient water tanks at the ruined 
forts on Castle Island, long uninhabited. - This would indicate that 
it was introduced here as long ago as the war of 1812. 
Mecistocephalus Guildingii Newport. 
A West Indian species recorded by Boliman, 1889, 
Thousand-legs ;  Galley-worm ; Milliped. (Spirobolus Heilprini 
Bollman.) 
Described from Heilprin’s Bermuda collection of 1888. We 
found it common under stones, etc. It is 2 to 2.5 inches long, round, 
