THE MYRIAPODA OF NOKTli AMERICA. 115 



Slender; smooth, very lightly punctate. 



Head suboval, punctate; sulci absent. 



Antenna' 25-20-jointcd, long, basal not very crassate, the lirst 3 or 4 

 smooth. 



Prosterual teeth 4+4, inner coalesced; eoxal tooth large, inner mar- 

 gin unarmed. 



The first 1~> dorsal plates immarginate; sulci \vell developed, and 

 commencing at transverse suture of first plate and dividing them into 

 three planes. 



Sulci of ventral plates shallow, last plate short and wide, sides con- 

 verging, rounded, posterior margin emarginate. 



Second tarsal joints of all legs, except anal, armed. 



Anal pair of legs slender, as in hcrox; spines very small; 8-12, in 3 

 or 4 series on the superior -interior surface; 4 or ~> in 2 series on the 

 inner surface; beneath 10-12 in 2 or 3 series; apical process large and 

 blunt, armed with !)-Ll small spines. 



Posterior pleurae narrow; apex long, armed with 7-!) spines, posterior 

 margin concave; a marginal spine. 



Length, 75""". 



Described from one specimen of which the anal pair of legs is broken 

 off. 



This new species is separated from /<m>.s, /></< //y>M.s, iticitraytienHi*, and 

 ri rid is by the large number of spines of apical process of femora and 

 the well-marked sulci of first dorsal plate. 



6. Scolopendra galapagoensis. *)>. n<>\. 



Diagnosis. Related to Scolopendra riri<iic<>niix Newport, but the 

 spines of apical process of femora of anal legs, (-S; spines of apex of 

 posterior pleura 1 , 0-12; spines of femora of 2-20 pairs of legs, 4 or 5. 



7; v _pr. Xo. 594. 



Ifnhitat. Chatham, James, and Albeinarle Islands, Galapagos Ar- 

 chipelago. 



Ihwrijtfion. Very dark bro\vn, more yellowish posteriorly: under 

 parts more brown than upper; the first five or si\ antennal joints dark 

 blue, rest rusty; tarsi brownish, rest of legs bluish brown, except base 

 of femora, which is more brown, like ventral plates: posterior pleura 1 

 and femora of anal legs reddish brown. 



.Robust, smooth, all parts very slightly punctate. 



Head suboval; two longitudinal sulci, which break up posteriorly, 

 and send a branch along lateral margin. 



Antenna' long. 17-jointed, articles long, basal subcrassate, the lirst 

 four or five not hirsute. 



Prosternal teeth .'! + :J, large, inner coalesced: a transverse snlcns 

 along anterior part of sternum. 



The first four dorsal plates immarginate: posterior borders trans- 

 versely wrinkled; crest of anal segment weak, only extending three- 

 fourths of the way. 



