r210 NEW YORK STATE MUSEUM 



than the outer branch, and terminating in two hairs, very close 

 together, appearing as one, equal to one third the outer branch 

 in length. 



The mouth parts form a prominent mass on the ventral side 

 of the head. The maxillipeds are proyided with a jointed palp. 



The legs are long, all seven pairs being of about equal length; 

 hairy. 



The external branches of the five pairs of abdiominal ap- 

 pendages are flattened platen, forming gill covers. The inner 

 branches of the first and second pairs of abdominal appendages 

 are rudimentary structures; the inner branches of the last three 

 pairs are delicate flattened sacs, constituting organs of respi- 

 ration. 



Of the above characters those most distinctive of the species 

 relate to the uropod^. The characters which serve for ready 

 identification are as follows. 



Uropods slightly exceeding the abdomen in length; the inner 

 branch one third longer than the outer branch; the two terminal 

 hairs of the inner branch very close together, appearing as one. 



Habitat. A deep, shaded ravine, under stones (at time when 

 collected, late in November) at foot of a limestone talus. 



The writer is indebted to Harriet Richardson of the U. S. 

 national museum, Washing)ton, for examining specimens and 

 verifying his determination of the species as distinct from any 

 hitherto reported from America. I also find it different from 

 any of the four European species described in the work of Budde- 

 Lund. 



Of the genus A r m a d i 1 1 i d i u m onh^ one species has 

 hitherto been reported as found in America. This is A r m a - 

 dillidium vulgare Latreille which appears to be widely 

 but unevenly distributed. It was first reported by Say^ who 

 described it under the name of Armadillo p i 1 u 1 a r i s . 

 Under the same name it was reported by Gould^ as occurring in 

 Massachusetts and by De Kay^ as found in New York. The 

 writer has seen a specimen of this species found near Syracuse 

 N. Y., and others that were collected in the locality of Chatta- 

 nooga Tenn. In the work of Budde-Lund the species described 



'Say. Acad. nat. sci. Phila. Jour. I. 1818. 



-Gould. Rep't on the Invert, of Mass. Cambridge 1841. 



^De Kay. Zoology of New York. pt. 6. p. 52. Albany 1844. 



