THE MYRIAPODA OF NORTH AMERICA. 169 



Genus I. ('i-iijitops. 

 1844. Cryptops Leach. Trans. I, inn. Sue., 381 (hariensis). 



Type. Cryptopti Imi-h'iixiH Leach. 



Etymology ^/JI>TTTO>J concealed; &??/, eye. 



This genus contains the following North American species: 



1. Cryptops hyaliuus. 



1821. Cryptops liyalina Say. Joum. Acad. Nat. ' Sci. Phila., in (Florida); Say, 

 (Euvres Ent., sp. 3, 1822; Newport, Trans. Liim. Soc., 409, 1844; Newport, 

 Cat. Myr. P.rit. Mas.. liO, 1856; Wood, Jour. Acad. Nat. Sci. Phila,, 34, 1862; 

 Wood, Trans. Amer. 1'hil. Soc., 168, 1865; Underwood. Ent. Ainer., 65,1887. 



1847. Cryiilapn liyaliiiH* Koch. Syst. Myr., 175; Gervais, Apteres, iv, 293, 1847; Kohl- 

 rausch, Archiv f. Natnrg., 129, 1881; tollman, Ann. N. Y. Lye. Nat. Hist., 

 107, 111, 112, 1888 (Knoxrill,'. Hearer Creek, and Mossy Creek, Tenn.); Boll- 

 man, Ent. Araer. (!, 1888 (Lit tic Hock, Arkadelphia, Okolona. anil Ultima 

 Tint I e, .irk.). 



1847. Cryptopi* mUbirti Uervais. Apteres, iv, 592 (Xcir ,lerncy). 



1862. Cryptops millicrHi Wood. Joum. Acad. Nat. Sci. Phila., 34; Wood, Trans. 

 Aiuer. Phil. Soc., 168, 1865; Underwood, Ent. Ainer., 65, 1887. 



1867. Cryptops <t*i>er\in'x Wood. Proc. Acad. Nat. Sci. Phila., 129 (Montgomery Co., 

 ?>(.); McNeill, Proc. U. S. Nat. Mus., 326, 1887 (Pcnsacola, l-'la.); Under- 

 wood, Ent. Amer., (i5, IssT. 



1886. Cryptops xnl<-<(lns Meinert. Proc. Ainer. Phil. Soc., 211 (Bee Sprint/, /u/.); 

 Underwood, Eut. Amer.. >.">. 1887. 



Habitat. Eastern United States X. to Kew Jersey, Pennsylvania, 

 and Indiana, and W. to Indian Territory. 



Etymology I, at., of glass. 



For a description of this species see that of sulcatus Meinert. 



I'nderwood in his synopsis of the species of this genus has regarded 

 HI illicit i, axjH'ripcK, and NtdcatiiN as valid species, but it seems to me that 

 they are all identical with lii/nlimis. I have examined a large amount 

 of material from nine different States and have been able to find only 

 one species. 



Genus II. THBATOPS. 



1X1 1. TJiealops Newport. Trans. Linn. Soc.. 410 (poxtica). 



1862. Opisthemega Wood. .Jonrn. Acad. Nat. Sci. Phila., 35 (xpinicaudu'i. 



J. >/!><' ('>'!n>fnj>N poxtica Say. 



Kli/iiioltH/i/: ffeatTJjS, a spectator; cat, 1 ', an eye. 



A recent examination of the type of ('i-i/i>topn jtoHiico Say, wliich is de- 

 posited in the British museum, by Mr. I\. limes Poeock,* has proven 

 that Newport was mistaken as to Say's species having eyes. The 

 elimination of this character makes 77/m/oy>\ identical with 0/m 

 1ln'iin'ti(i; but as the former is oldest it must he used in place of the lal 

 ter. notwithstanding the fact that it is based in part upon an erroneous 

 character. This conclusion svas published by me sonic time before Mr. 

 Pocock's paper appeared (T. cnisNijtcx Uollman, Am. N. V. Lye. N. JI., 

 110, 1888; '/'. xpininnnlHS Boll., Knt. Amer., G, 18SS). 



''Pocock, Ann. & Mag. Nat. Hist., 2s::-2!Ml, isss. 



