672 PROCEEDINGS OF THE JfS-ylTIONAL MUSEUM. 



Stigmata large, elliptic, somewhat oblique, distant from the insertion 

 of the legs. 



First two pairs of legs small, 0-jolnted. 



Third pair of legs of males small, the coxa; very large, flask-like, pro- 

 duced ventrad into long processes. 



Fourth, fifth, sixth, and sevchth pairs of legs of males crassate, 

 gradually larger from the fourth ; third joint especially hypertrophied. 



Male genitalia double, both lamina' divided at apex into complex 

 spinosc and laciniatc processes. 



Ninth pair of legs of male twojointed, tin*, basal joint small, the 

 ajucal capitate, shai)ed somewhat like a shoe. 



Tenth legs of males with coxa- perforate. 



JMstrihution. — Central Kastern States; also (JaliCornia. 



The specimens on which this family is based differ from any known 

 members of the Cliortleumafoidfia in the small head, poorly developed 

 eyes, the antenna' inserted far from the eyes, low down and near each 

 other, the moderate mandibulary stipes, and the large first segment, 

 characters in which they resemble the Poly/onida'. They differ further 

 from the Chordenmatida' in the semi(Mr(uilar mentum, the carina* and 

 rough granules of the segments, the trilobed anal segment, the flat 

 anal valves and the peculiar second and third pairs of feet, all of which 

 characters seem to be more or less unicpie. The carina' are not similar 

 to those of the Julida' and Lysiopctalida', being abrupt elevations of 

 the surface, and not the edges of grooves. From the Julidse and Lysi- 

 opetalida'- they differ in having no repugnatorial pores, and in this 

 character are nearest the Choi<leumatida', with which they also agree 

 in having 30 segments. 



STRIARIA GRANULOSA Bollman. 



(Plate LI II, figs. la-l>.) 



» 



Sfriaria ijrarmlosa Boi-lman, Aun. N. Y. Acad. Sci., 1888, IV, p. 108; Hull. U. S. 

 Nat. Mns., 1893, No. 16, p. 83. 



Type.— 1^0. 230, U.8.N.M. 



Locality. — Beaver Creek, Jefferson County, Tennessee. 



Length, 11 mm.; width, 1.2 ram. 



Color in alcohol dull brownish, but probably stained from the rub- 

 ber cork. In life probably mucli ]ik<' the next species. 



Body cylindrical, wider anteriorly, tapering very slightly caudad, 

 and with twelve large carinte on each segment. 



Head with sides flattened above and pubescent with fine, short hairs. 



Vertex finely granular, roughened; below the anterior edge of the 

 flrst segment with a medianly well-pronounced transverse furrow. In 

 front of this the vertex is medianly prominent and laterally plane or 

 depressed. The median sulcus is very shallow jmsteriorly, becoming 

 gradually deeper and broader, and with a gradually more prominent 

 ridge on each side. The ridges begin about halfway from the flrst 



