CLASSIFICATION OF THE SYNGNATHA." 



r.Y CIIAKI.KS II. IIOM.MAN. 



Ill ju'conliiiice witli the virws iccriitly advniuiMl l)y Pocock. Kiiiji's- 

 \oy, and several coiitiiieiital writers, 1 have rejiarded the SipujiKithn as 

 beiiij; more closely allied to the H('X(ip<nJn than to any orders of the 

 old group of Mf/rit(i)oihi. For the class iiieludiiii; the SiitKjtutthd and 

 JIexapoiIi(, I )>ropose the name I'Jti/iiKK'/iila, in relerenee to the fact that 

 they are the only two groups which have a true labium. T have ar 

 ranged the tbllowing classilication accor<ling to an ascending series. 

 My reasons for phicing the Litln>hii<l<v lowest are as follows: 



1 (a) According to the investigations of Ilaase, in Lithohins, Ihnicops^ 

 Cryptops^Awd in young specinu'iis <)f Scolnpctidni and Jhuriuui, the spir- 

 acles are «'haracterized by a feeble margin, a shortish cone, no closing 

 apparatus, an«l by the sei)arate aj^ertures of the traclu'a'. 



{h) That in the Geophilid(V and SmJopendrUUv the tracheal system is 

 most highly developed. 



2. In the distribution of the genera of ANAMoiiriiA. {Hrjiicops, Ijith- 

 f>fti//s, and Hcntigcrn) we see indications of tln'ir oidness, while in the 

 distribution of a large number of genera of Eiumoki'IIA we observe that 

 they are confined to small areas and not cosmopolitan as the others. 



Although tlie Epiniorpha may have tlu' highest development of a 

 tracheal system, nevertheless in many ])oiiits the Geopln'lithr show in- 

 dications of a degenerate family. 



Class ETYMOCHILA. 



Siabclasw I — JSVXtxN A1"H^. 



A comparison of the characters (jf the Epimorpho and Anamorphn of 

 Meiuert shows that his divisions should have the rank of orders. They 

 may be characterized as follows: 



a. Pairs of legs 15; coxir large; feniak's with external genital armature: biudgut 

 straight; young born with scvfii pairs of Ic^s AxAMouriiA. 



aa. Pairs of legs always more than 21 ; c )xa' small ; ft'uialcs withontextfrnal genital 

 armature; hiuil gut Ix-iit; young born with as many pairs of legs as adult 



Epimorimia. 



*Siuce A'//n</?irt//i«, as defintMt by Leach, is an older name than tlie Cliiloiwda of 

 Latx'eille, it should be used insvead of the latter. 



16a 



