CAMPODEiE. 



G2.1 



ones inserted on the subterminal rings of the ahdomen ;ii<l 

 o-reatly in locomotion, tliough these insects run witli great ra- 

 piditv a^ul do not leap like the Foduridm, and thus remind 

 us, as well as in their general appearance, 

 of certain wingless cocki'oaches. 



In Lepisma (Fig. 618, L. 4-sereV/toPack.) 

 there are long hristles on the tip of the ab- 

 domen, of which three are longest, while 

 3IachiUs diifers in having compound eyes, 

 and longer abdominal bristles. Lepisma 

 sacchavina Linn, is often very common in 

 houses, where it cats holes in silks and 

 silken tapestry, devours the paste and 

 mutilates the leaves of books. L. domes- 

 tica Pack, is a beautiful white hairy 

 species, spotted with black, and is common 

 about fireplaces in Salem. 3fachiUs variabilis Say (PI. 10, 

 figs. 8, 0), is dark brown, with long caudal stylets. It is com- 

 mon in the United States. J/, orhitalis Pack, inhabits Idalio. 



CAMPODE.f: Meinert. Under this name Dr. Meinert has 

 established a family consisting of two but little known genera, 

 which have flat and elongated bodies and no springing appara- 

 tus, nor eyes, and though the author excludes the Lepismoe from 

 the Thj'sanura, we would suggest that the Canipodeae seem 

 intermediate between the running Lepismoe and the springing 

 Poduroe. The antennae are setaceous or filiform, and the feet 

 are adapted for running, with distinct, elongated, two-clawed 

 tarsi. There are two anal cerci arising from the tenth and last 

 abdominal segment. There are six thoracic spiracles, the 

 PoduriB having none (Meinert). The genus Japyx of Ilaliday 

 has short, inarticulate, horny anal cerci. J. soh'/ngus Ilaliday 

 lays few eggs, but those very large. It lives under stones and 

 when disturbed resembles " a Lithobins in the character of it;-' 

 movements," and bears a remarkable resemblance to a young 

 Forficula. J. stibterranens Pack, lives in J\.enti\c]i.j. The other 

 genus, Campodea, has many-jointed anal cerci, C staphylinus 

 Westw. of Europe lives under stones. C. Americana Pack, 

 has similar habits. C. Coolei Pack, lives in Mammoth Cave. 



