TIIK MMtlAI'OhA OF NolM M .•MKKHA. 151) 



Fillllily IV. — ('ALLll'olilD.E. 

 IlK ludcs tlu> gt'lMlM ('nlli]mM of Ui.H80. 



Suborder II.— POLYDESMOIDEA. 



Coiitaiiis tin- tollowiii;; lainilirs: 



«. i'li-iu'iil iku<l v«-ijtr;il i>Ii»h*H, i>xfe|it tbimi' of tin* tsvi» tiiitfrior Rt^KiiieiitH, not free; 



myiiiiiit?. I}» or ->i); puirs ot U';;h ( i ) 'JH or ( 9 ) 11», or ( <f ) M or ( 9 ) :»l. 



l'oi.YI>K-MII> I . — V. 

 (III. I'liiinil iiuil vciitiiil plates froi*; .si-^^m uis I'l ; pairs of !«•;;« 'AJ; hliapi- of lio.ly 



an ill tlio Chiinr'nliv (ii,o.MEUiui:>MiU.t.' — VI. 



Family V.— IM H.VDKSMID.K. 

 This family is (Iivisil>le into two siil»lamili<s: 



a. IJoil.v i'lon;i;atu, cuiitruttilu into a spin-; lati-ral i ariiin' nrvcr wtroiiKly «l«'|in'HHi«l. 



l'uI.YI>l.>MIN.I.. — XV. 

 na. IJoily rtLort, very «!ouvex, eoutraetili- into a Itall; cariiuf >tioii};l\ ilfpreHseil. 



Sfii Kllloi)KSMIX.t,~\\ I. 



Sublamily X V. — I'ulvdes.aunj:. 



AmtlifnU of tlir ;/! mill. 



a. K't-))ii;;iiatorial pores plaied on tlir ."». 7, !», 1<). \J. i;;, h"»-ll) se;;nieiitH. 



b. Ffhioia of lc^;s not spinrtl. 



c. A swellin^j aronnd the iH'iinj^n itoriiil i>oie. 



d. Anal se;;iiii'nt more itv lesn sliarp. 



e. Dorsal i>lutes with a longitudinal salens, smooth; lateral lariwa- smuil; 



bod.N narrow. 



/. liody strongly jnlid; lateral ••arime rndimentary or line-like; anal .^-eg- 



nn-nt deeiirved. .STKoNtiYi.osoMA Hrand;. 



ff. Body less Jnlid; lateral carinas very jjlain; anal se^nnnt with tiie end 



excised OKTHo.Mitiii'liAt iSidlinan. 



ee. Dorsal jdates not ili.stin«'tly snlrate; smooth or sealy ; lateral earine 



large; body wide. 

 g. IJaek convex. 



h. Dorsal plates smooth; lateral carina- not serrate. 



ij.i'ioDi.sMi'.s t Sau88nrr. 



hh. Dorsal plates rough: lateral <arin;e very large and the unirgins V/t/o*. 



.serrate. 



Oi>o.NTOTK<»l'is Uuinb. ami Sanss. 



gg. Back flat. 



i. Kepngnatorial pores placed on the upper part of lateral carina^. 



Rn.vcis Saussnre. 



it. Repnguatorial pore placed on the lateral margin of carina;. 

 k. Kepugnatorial pore surrounded by a round swelling. 



1. Segments with a few indistinct tubercles along the margins 

 (species white) Ch.kt.\si'i.s BoUnian. 



' If Gervais's statements and tigures of H lomerldesmu^i poreellus are true it should 

 reprc I rh<' type of a new laniily. It combines a few characters of the Polydca- 

 iitidu: .Hid (lloiHtrido; under the latter of which Gervais jdaced it. 



i Orthitmoipha IJollman tor I'lirudtHinuH Saiissnre. which is i)reoccu))ied. 



\ As OxijiiruH Koch i.s preoccupied,- Ltplodcjiim^i -Saussure must be used instead. 



