1516 Ml. Ci. Lewis on 



rAKOJiALl'S, Eiiclisoii, Jaliil). p. IG7 (ISiU). 



'J'vpc, coi)i/>faiiatus, Panz. 



After foiindiiif; the two new gcncMa, as ])elow, tlie species 

 now remaining in this genus arc: — acistri(/us, hiarcnlus^c/avis, 

 {fespcclus, cvonencciis, Forestieri\ lionoratus^ ket'colu, khon(]ius, 

 viiliaris, vnisiciis, ocftini'tis^ l\oherti\ tiCuf/)(i/>i/</usj ti-ih(.></<v, 

 uwbi/icatuSj Victori(i\ viiluhi, Mars. ; wqualis^ Say ; Atluaudi^ 

 derasiiSf letidciila, Mo(Ji<jlianii\ Sc/iu/l/ieissi\ Si'li. ; amiUas^ 

 hnvipes, commeatus, Fetv, j u</isanus, (jol lath , indicus^ loccUus^ 

 loiifficornis, viendicus^ viontiviVjUSj niponensis^ oblisus^ per- 

 tiiii ilis^ suhvutnllicus^ tardipes, veriniculatus^ viaticus^ Lew. ; 

 c<i//a»icits, j\lotscli. ; coivjddtiatus^ Panz.; dijitntus, AVoU. ; 

 e./''V/n«.v, Fulir. : Ludovici,saucius, terra'-rejiua', Blk.;_/«i'anMs, 

 Kcdt. 



The prosternum of P. complaiwlas anJ all the above arc 

 niarginate (see fig. 4, p. 318). 



In my Catalogue of 1905 not more than 100 species of 

 J'iiromd/iis were given, but the number of species yet 

 undetcribcd in collections is consideiabh'. 



Isoi.OMALUS, gen. nov. 



Type, verminoHUs, Lew. 



Body more or less convex ; outline varying considerably, 

 being sometimes elongate-oblong or sometimes shortly oval; 

 dorsum ■with a sutural stria, abbreviated anteriorly ; the pa'o- 

 .sternum, antiriur lobe somewhat short, keel narrowed before 

 the co.N.T, without striie, and .«emicircular at the basal edge 

 (see fig. 5) ; the mesof-ternum is wide posteriorly. 



The other species are : — addendus, irregularis^ Sch. ; hi- 

 cincluft^ bilineatus^ caustfcus, concent ricus, cor dypijg us, didijinus, 

 ftariolus, hif-}>atiwhr^ ihjimus, t'uutictus, JMderlij v.aliiN^ oculi- 

 jiijtjus, productus, riiyKjeniua, (ri/uliurn, ^Lirs. ; hislriatus^ 

 .scmhiufuiiiy Erich. ; coinpleu-us^ martcus^ Casey ; Jis.sus,jfJunu.Sj 

 votaln'lis, orhns^ pujn'l/ns, roijalU, seJectus, sirnilis^ sincerus^ 

 athrinusj verniiuosKs, Lew.; and d/Jficilis, Horn. 



There are lour species in which the sutural stria is obsolete 

 or wantitig, but the general form of the body is the same, 

 \\z. coiivexus, Mars. ; divaricahis, tnjfatus, and sulcatus, Lew. 

 The figure of the last species (Biol. Cent.-Amer., Col. vol. ii. 

 ]it. 1, tab. vi. tig. 7) shows that it has a trace of a sutural 

 stria. 



J. Luderd, Mars., has made a settlement along the borders 

 of the Mediterranean, having doubtless been introduced with 

 Ojmntia largely grown there. 



