ON THE OHILOPODA OF NORTH AMERICA. 51 



S. LINE.vta. — S. griseo-brunnea; oapite maguo : segmentis cephalico et basali appendioibuaquo saturate 

 rubria; segmento anali obscure flavo (ioterduui " subcordato"); corpore antico leviter sed postice 

 luodii'c angustato; superficic dorsali lateribusque singula lineis duabus obscuris subnigria interruptis 

 proximatis; segmento cephalico lato, breve, quinqueangulato, postice abrupte truncato (aut '• satu- 

 rate rubro"); antennis brevissimism crassissimis, latis, depressia, haud cylindricis, serjsim acumin 

 sparse brevisaime pilosis; labio convexo, saturate rubro, autice vix emarginato, sulco mediano obscure 

 impresso; mandibulis baud denticulatia; scatis longitudinaliter trisulcatis, el iuterdum depressione 

 obacura utrioque impressia, suturia scuto-cpiscutalibus nullia, marginibus lateralibua elevatis ; pcdibus 

 brevibus, gracilibus, flavi8, iitrioque 77, pari postrerno (in femina solum?) parvo ct gracile; atcrnia 

 suturis - iternalibua et sulco obscuro mediano impressis. 



G. I'ii- s, \'\v|i . Linn. Trans, xix. p 136; Catal. British Mua. Myriap. p. 89; Gervais, Apteres iv. 



p 321. 



The subbasilar segment is of the same color as the body. The two median dark 

 lines anteriorly are scarcely separable and less interrupted than other portions. One 



of the lateral lines is situated on the edge of the scuta, and the other just above the 

 spiracles; they ate composed of a scries of dots. The three median sulci of the scuta 

 arc closely approximate. Our spt cimen differs from Mr. Newport's diagnosis both in 

 the color of the anal segment, the shape of the cephalic subsegment, and the markings 

 of the labium, but otherwise agrees very well. 



| I | Choco, New Grenada. | &.. Schott. | j Unc. 2 [ 



S. TROPICA, n. sp. — S. dilute brunnea, capite antennisque aurantiacis, segmento anali obscure flavo, 

 ■ >re anticc modice sed postice illico valdeque angostato; superficie dorsali lateribusque singula 

 lineia duabus approximatia, interruptis, subnigria; segmento cephalico subtriangulare/breve, modice 

 angusto; antennis filiforu "lice brevibus, nee acuminatis aec pilosis; labio convexo, antice haud 



emarginato, buIco mediano mullo; mandibulis haud denticulatis ; acutia longitudinaliter trisulcatis, 

 et plerumque depressione utrioque impressis ; suturis scuto-episcutalibus nullis; pcdil.ms modic-e 



brevibus, gracilibua, obscure flavis, utrinque 77, pari postre (in femina solum?) parvo, gracile; 



sternis dense punctatis, auturia sterno-episteroalibus et depressione centrali suborbiculare impressis 



The subbasilar segment agrees with the rest of the head in color. The dark lines 

 are almost exactly like those of the preceding species. The median sulci are perhaps 

 not quite so sharply cut. The head is proportionally considerably smaller than that 

 of E. linealus. The antennae are also essentially different from those of that species. 

 We have a specimen which is of a very light yellow and with traces of the dark lines, 

 even the head being of a verj light shade. We have no hesitation in referring it to 

 this form, believing it to be an individual that has just changed its skin or shell; the 

 skins of all species probably being white, or nearly so, when just assumed, and gra- 

 dually darkening and gaining their peculiarities with age. 



- | 2 | Nicaragua. | Capt. Rodgers. | E Wright. | Unc. 2^ j 



