THE MVKIAPODA OF NORTH AMERICA. 155 



Subfamily III. AXDTJOCXATIIIX.I:.- 



.hnili/ni>i i(l' tin t/r/nra of . t iiilfni/lidt/ii mi . 



(i. Fifth segment normal ; pores not raised on a, pedicel ...... DOLISTEXUS Fan/ago. 



UK. Lateral carina- of fifth segment deeply emarginate; the repugnatorial pores 

 raised on a pedicel, tin- first placed on the anterior lobe of fifth segment, rest 

 on posterior border of other segments ................... Vxm:or,XA THUS ( 'opr. 



Subfamily I V. PLATYDESMIX^E. 



.\intlyx\x <>f Ilic gcncni of PlatydesmincB. 



a. Dorsal plates with two large median tubercles, anterior with smaller ones. 



I'si:n><(i>K>Mrs I'oeock. 

 (ia. Dorsal plates with two transverse rows of small smooth tubercles. 



PLATYDKSMI s Lucas. 



Order II. HELMINTHOMORPHA. 



This order is divisible into the following- suborders: 



. Cardo of mandibles and proinentnm of gnathochilariiun present; segments BO 

 or more ...... . ................................................ In,riDKA. I. 



an. Cardo of mandibles absent; promentum of gnathochilariiun absent ; segments L'O 

 or 21 ; copulation foot of male formed from the anterior pair of seventh seg- 



ment .................................................. PoI.VDK.s.MOIDHA. II. 



Suborder I. IULUIDEA. 



This suborder is divisible into the two following superfnmilirs: 



a. Copulation foot of male formed from both pairs of legs of seventh segment ; cardo 

 of gnat hoe hilavinm single ....................................... Jri.oin.K. I. 



(id. Copulation foot of male formed from the anterior pair of legsof seventh segment ; 

 eardo of gnathochilarinm double ....................... C.vi.i.ii'oDoiu.K.t II. 



Superfamily I. Juloidae. 



This contains the following families: 







a. Repugnatorial pores present ; anal segment, rounded or produced into a spine 

 (ovaries surrounded by a common membrane) . .................. Ici.ir>.i-:. II. 



mi. Repugnatorial porea absent: anal segment produced into two slender papilla 1 

 or nnidentate i ovaries not surrounded by a common membrane i. 



ClIASIT.lHiM.MII. i:.v\ II I. 



*Andrognathin<K (=Fa.mil'y Andrognathidce Cope. 1'roc. . Vmer. I'hil. Soc., I si', 



\Plnlinli-xinn8 Lucas ( 1'ifsloilrniniiN Lucas, -/iriirh //<)// \\'ood). 



}: After comparing Risso's description of ('nlH/mx several times with specimens of 

 Lysiopetalum 1 have tailed to see why it should not be considered the same as l.i/siit- 

 />< liihnii. Since Lysiopetalum is a synonym of ' 'iilli/inx, the family and sii|icrfamily 

 names must be ma:!e to agree with CnlUjHiN. 



fy Craspedosomidte t .- /'// //art Craspedosomadiv Gray, isii't. As this name is lia^ed 

 on the oldest yeli us and besides is older than Koch's German name. Chordeii widen, it 

 must lie used in ]dace ol'tlie latter. 



