14 PROCEEDINGS OF THE ACADEMY OP 



I. CSRUIiEO-CINCTUS. 



I. brunneus, saturate caeruleo annul atus ; segmentis 42 ; antennis parvis ; 

 scutis infra et supra modice canaliculatis ; mucrone nullo. 



The color of this species is brown, with a dark, sometimes obsolete ring of 

 blue to each segment, except the most anterior. The lower portion of the 

 anterior surface of the head is light brown. The labial margin is scarcely 

 eniargmate, but is rounded and fringed with rigid hairs. The eyes are ar- 

 ranged in subtriangular patches, with their transverse diameter much the 

 greater. They are connected by a black band, which is much broader in the 

 middle than at the ends. The first scutum is large, with very small lateral 

 processes even iu the female. There is on its anterior edge a very obscure 

 light border, and a little posterior to this a black, more or less obsolete, band. 

 The scuta are regularly, although rather lightly and distantly canaliculate 

 over their whole surface. The last scutum is distinctly but minutely punc- 

 tate, has its edge whitish, and is not at all mucronate. The anal scales are 

 not at all pilose. The specimens from which this description are taken are in 

 so bad a condition that I have hesitated to notice them. But probably the 

 description will be found to be sufficiently accurate for the identification of 

 the species. 



Length of body, about one and a half inches. 



I. HOETENSIS. 



I. brunneus, lateribus maculis nigris ornatis ; antennis modice brevibus, 

 pilosis, filiformibus, clavatis ; segmentis 42; scutis arete canaliculatis et infra 

 et supra ; mucrone nullo ; squama preanali triangula, apice rotundato. 



The general color of this species is rather dark brown in the adult. But 

 when an individual is examined with a magnifier, it is seen to be beautifully 

 areolated with light brown. In young specimens and adults, which have re- 

 cently shed their exuviae, the color often verges on white, whilst the side 

 spots are black, contrasting strongly with the general tint. The head is 

 rather broad inferiorly, and has its lower margin shallowly emarginate, and 

 distinctly though minutely denticulate. The triangular eyes are connected 

 by a broad, dark band. The first scutum is ornamented on its anterior por- 

 tion by a dark, transverse band. The lateral processes are almost wanting, 

 even in the female. There is on each side a series of large, black dots, one 

 to a scutum, commencing rather abruptly at about the 5th or 6th segment, 

 and ending in the same way at about the 39th. The subscutum on which 

 they are situated are scarcely canaliculate. The anal scutum is about equal 

 in length to the two preceding it. 



Lengih half to 1 inch. 



Philadelphia. Dr. H. C. Wood, Jr. 



I. VIRGATUS. 



I. saturate brunneus, dorso luteolo, medio linea nigra instructo, antennis 

 modice longis, pilosis, clavatis ; segmentis 35 ; scutis copiose distincte canali- 

 culatis ; mucrone subnullo ; squamis analibus sparse pilosis ; squama prea- 

 nali lata, subtriangula, apice rotundato. 



The sides of the body are deep brown, almost black, whilst the dorsum ap- 

 proaches a yellowish fawn color, and has a strongly pronounced, black, me- 

 dian line. The lower margin of the head is broadly emarginate, denticulate, 

 and fringed with a series of hairs. The anterior surface is mottled with light 

 brown, and has a dark median band, terminating in a transverse one low 

 down. The under surface of the body is light-colored, and is often somewhat 

 areolated. There are some specimens whose pattern of coloration is light 

 brown or fawn colored, with two lateral and one median dark stripe. Are 

 these, individuals which have recently cast off their exuviae ? The eye-patches 

 are somewhat parabolic. The joints of the antennae are obconical, dark co- 



[Jan. 



