TIIK MYK'IAI'ODA OF NoRTli AMERICA. 139 



11. Sl'IKOSTItKPTIS. 



lKV^. — SpiroMlfcpliiM Hiainlt. Hull. Sor. iiiip. Niit. .M«»»<"ou, 2(l3 (Hihnr :iimI iiMdituiiit), 



IKVA. — SfiiriKiifvliHlHn Itraiult. Mull. So<-. imp. Nat. MoHr«»ii. 2(U (ariiliinifiiluH). 



1S3:5. — S/ihoiiii ux Itruiiilt. Uiill. Sur. iiiip. Nat. Moscoii. 'JiU ( lixilirri). 



\H\\. — Soiliiinii/f Itraiiilt. |{f(ii«-il iM [ juniuii ux, xiluit, iiinloiiini, «/»•.). 



1>41. — (hloiititpfiijv Krniiilt. KtM-iu-il. 1 10 (hiriiMpiiliiluM, darotnuintiitt, tirarilicoruiM, etc. ). 



Brniidt in liis .sulxlivision of Spirtnttiuptxs did not n>tiiin tlu* oii<>in:il 

 namooftlu' <;('!iiis tor lii;it division of it wiiich roiitain«Ml tin* orijiinal 

 type of tin' jionns. Now. as A'/u/<»/;//(/» contains tlie type of Spirostrepfiis, 

 the nanu' S/tirostrcjifns innst ln> nsed in place «»f .V«>(/o/>////r. Spintfxriis is 

 also i<l«'nti<'al witli S/}in>st('i)fiis, and as its tyjH's i>elon;^' to liis snl>;:enns 

 (hhnifopjfiir, it innst be u.sed in jdaee of OdoHtopijffc on account of its 

 piioiity. 



12. r.KKOMOPUS. 



ISXl. — I'nromnpuM Karscli. Kinif^f none dip. Myr. Mer.Mns., 1'2 (h/Hinpetalinux — Spiro 

 Imliis iiiifiiiKiirrjia Wood). 



Thi.s jfomis has been considered by Latzel as identical with Julns. bnt 

 the folio wiii}^ from Dr. Karsch's <>eneric description has led nn* to be 

 lieve that it shonld be re<'o<;ni/.ed as a valid j;enns: 



^'OriJUs nciilorum serichiis iitrlaque :> ttnttmn trannrerniH contposifis 

 . . . itufrnnis p(<lihiis<iitc loiu/issimis . . . <<>I(> in ttiore ((jtjhndi- 

 vihiis vrassls Imiiil pKlifdrhiihiiH sitt loiujh 'niHirnrt» .... itniittur- 

 tils ludnm pclma mitiiitis." 



None of the species o{' JkIkx ever attain a lenjj^th of over 100 millinie. 

 ters, while those of l*(Ct'oin)pns are from 1">0 to Km millimeters long. 



So far the month parts and j«nathocliilarinm. vhich always i»resent 

 the best generic characters, have not been examined. 



i:{. Tu.vi nY.Mi,rs. 



18(54. — TmelifijithiH Peters Monatsber. Kiin. jmMiss. Akad. Wiss.. r>l7 (ciiilnnicus). 

 18S4. — TrachyntJiis Latzel. Myr. ()8t.-l'ny;ar. Mon., 11, .">() (emend.). 



This genns is closely related to Acunthiulus, bnt is easily sejjarated 

 by the following characters: Ocelli in a single series. Antenna* and 

 legs moderately long. J*osterior border of tirst segment carinated, 

 sides not i)roduced as in Acanthi iilus. Other segments, except the last, 

 with 13 to 21 rows of carina-. 



First, second, and third segments each with one i)air of legs, fonrth, 

 footless. Peters' orthography Trachyjulnn onght to be nsed instead of 

 Trachi/iiUas, which emendation has been used l)y later authors. The 

 same must be the rule with Acnnthiuhis and Glyphiulus. 



14. AtAXTIIIUUTS. 



1847. — .4cflw//i)M/«.<( (icrvais. Ann. Sci. 'S{\\..1{) yhlaiuvdlii). 



This genus was first re(;ognize<l by Gervais as a snbgenus of Julus, 

 but as it bears no relation to Julm it has been raised by later authors 

 to a generic rank. 



