776 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



excepting the extreme tip of the principal, are straight, and the reticu- 

 lation tetragonal. The wing appears to be hyaline throughout, the 

 pterostigma very slightly infumated, the nervures fusco-castaneous, those 

 about the pterostigma deepening nearly to black. Apically the wing is 

 well rounded, its apex falling in the middle and not at all produced. 

 A species is indicated of about the size of P. macropus Sel. 



Length of pterostigma along costal edge 1.5""", of same from inner lower 

 angle to outer upper angle 2.1""" j breadth of pterostigma 0.65'""', of wing 

 in middle of apical half 5.5™". 



AEACimiDA. 



Nos. 3, 4% 4199, 4200, represent legs of the same or allied species of 

 spider of about the size of Upeira riparia Hentz; femora and tibiae and 

 the sides of the tarsi are abundantly supplied with longitudinal rows of 

 fine, long, black spines, the claw double. No. 36 preserves the spines 

 alone of the same sort of leg. 



Length of femora 7"", of tibise 7.75"", of tarsi 3.25, of claw 0.3"", of 

 spines 0,75"". 



No. 63 shows the hairy, subfusiform, ovate body of a spider ap- 

 parently a little smaller than the above. 



Length of abdomen 4.5""5 breadth of same 1.8"". 



No. 4201 is the egg- cocoon of a spider, and is of exactly the same 

 size, shape, and general appearance as those from British Columbia, 

 which I have described under the name of Aranea columhice, excepting 

 that^fr^a 'break jn 1-he ston^^^there is "nO trace of -a pedicel. 



Leiigth of ^g-cocWn 5""j breadth 4"". 



\ 



MYEIAPODA. 



Iiilus telli^ter.-^ATuiugle Myriapod (No. 154^) found by Mr. Eichard- 

 son in the Gfeen Eiver bed is so fragmentary that it can only be 

 referred to lulus in a broad generic sense. The piece is composed of 

 ten or twelve segments, probably from near the middle of the body, 

 lying in a straight line and crushed, with no trace of any appendages. 

 The segments appear to be composed of a short anterior and a larger 

 posterior division, each independently and very slighly arched; the 

 posterior division is about twice as long as the anterior, and each is 

 transversely regularly and very finely striate parallel to the anterior 

 and posterior margins of the segments. The foramina can be detected 

 on some of the segments, and by their aid the width of the body can be 

 more accurately determined. As crushed, the body is 2.3"" broad, but 

 its probable true width is 1.5"", while the segments are each about 

 0.8"" long; the fragment preserved measures 8*5"" long. 



