28 CHILOPODA. 
Fam. CRYPTOPIDZ, nov. 
(= Plutoniine + Cryptopine, Bollman, 1893.) 
Body composed of 21 leg-bearing segments, as in the Scolopendride ; but with eyes absent and the tarsi of 
all the legs, except the last two pairs, undivided. 
Containing Cryptops, Paracryptops, Theatops, and Plutonium. 
THEATOPS. 
Theatops, Newport, Trans. Linn. Soc. xix. p. 409 (1845). 
1. Theatops spinicauda. 
Opisthomega spinicauda, Wood, Journ. Acad. Phil. v. p. 86'; Trans. Am. Phil. Soc. xiii. p. 170’; 
Meinert, Proc. Am. Phil. Soc. 1886, pp. 208, 209°. 
Hab. Nortu America, Illinois !?.—Mextico, Acapulco 3. 
This species, described originally from North America, is recorded by Meinert from 
Acapulco. 
Fam. SCOLOPOCRYPTOPIDA, nov. 
Body composed of 23 leg-bearing segments ; most of the terga nearly always bisulcate ; the sterna either not 
sulcate or weakly bisulcate. 
Head without eyes, overlapping the first tergite, which is strongly sulcate. 
Mazxillary cove without the distinct dental plates which characterize the Scolopendride. 
Anal pleure, as in the Newportiide, furnished with a very long spiniform process. 
Anal legs long and slender, the femur armed with only two spines; the tarsi as in the Scolopendride. 
The legs from the first to the twenty-first pairs with the tarsi undivided. 
Omitting for the present Scolopendropsis, of which the systematic position is a 
matter of doubt, this family contains but two genera, which may be recognized as 
follows :— 
a. The seventh somite with a pair of stigmata. . . . . . « . . ScoLopocryprTops. 
(Type miersii, Newp.) 
6, The seventh somite without stigmata. . . . . . . . . . . Ovrocryrrors, Haase. 
(Type rubiginosa, L. Koch.) 
Up to the present time the first-named has not been recorded from Central America, 
being known only from Santa Lucia, in the Lesser Antilles, and Brazil. 
