114 UULLKTl.N 16, l.NiTED MAlEb NATIUXAL ML>ELM. 



4. Scolopendra inacracanttaus, n\>. ii<i\ . 



iPiatfntmitt. — AlliiMl to S<-oloprmlr<i HubMpinipfH lieacli; Imf tin* t'nnorii 

 of anal U';;.s aiiiuul IxMieatli with thiw spines, of wliicli the two aiitrrior 

 are ver\ lar^e, tin- superior interior siufare arnieil with six spines; the 

 lirst iiiiii- dorsal phites iiiiinur^inate. 



7 ■»//«'. — No. HmI'. 



Uiihitof. — I'aeith- toast, some phuc lM'lwe«*n Lower California ami 

 kStriiits of Ma;;ellan. 



DiHcripiion. — Brownish j;reen: tip of antenna- and lateral parts of 

 dorsal plates f^iccn; head and tiist dorsal plate darker. 



Hather sltMider, smooth, only li*;htly pnnetate :int<'riorly. 



Head sul»orl>i(-nlar. piinrtate, not suleate. 



Antenna', 18-Jointed: artieh's moderate, tin* tirst six not hirsnte. 



{•ro.sternal teeth "•-fS, the ianer two 8mall and eoaleseed; eoxal tooth 

 larjye, apex eariiiate, nodule present. 



Dorsal plate, 4'xeept the first nine ( 1<^)< iiiar;;iiiate; sulei bejfiniiin;; 

 at the third and indistinct on the posterior; posterior bonier trans- 

 versely wrinkled. 



Sulci of ventral plates distinct; last ventral plate loiij^ and narrow, 

 sijles converjfing, posterior border rounded. 



Second tarsal. joint of all the lejjs, excei)t anal, arme<l beneath with 

 a spine. 



Anal le^s lonji, slemler: femora, with six si>ines « n the superior inte- 

 rior surface, arranjied in three series; three beneath, uni.seriate, the 

 anterior two larj;est: apical process l)ititl. 



Posterior pleura' densely jKirose; angular process snmll, bitid. 



Length 120'""'. 



In the colle<ti(»n is a specinu'u without a more deduite locality than 

 '' Tacitic coast." 



The following key will help to separate it from the related species: 



Feuiura of ]K;iiultimatu ]»!iir of legs iiiiariiied; lirst tlnrsiil ]>late without a trausverse 

 furrow; tarsal Joints uriiuMl. 

 ((. Kcuiora of anal legs uiiaruiod beiioatU, two spines within: th«' tirst »>-ll <lorsal 



plates intuiargiuate; last tw(» tarsal Joints nuariuctl Dkuaani. 



an. Femora of anal legs arinvd bent-atli. 

 h. Spint's of femora of anal legs 4-6. always two lieneath: the rtrst four or five 

 dorsal plates innnargiuate: the last or the last two tarsi unarmed. 



.SlHslMNMl'KS, 



bb. lupines of femora of anal legs 9, 3 lieneath; the tirst nine dorsal plates iramar- 



giuate ; the last tarsal Joint unarmed MAClutCANTUfs. 



5. Scolopendra microcauthus, sp. no\ . 



Dunjnosis. — Allied to Svolopendra ini'nix Kohlrausch, but the anal 

 pair of legs slender, spines small, ami more numerous. 



Habitat. — St. Margarit;i Island. I^»wer California. 

 Description. — I'ale green, posterior border of segments dark; pre- 

 liensorial legs orange. 



