610 BULLETIN f4, UNITED STATES NATIONAL MUSEUM. 



Localities. Westwood, Hamilton County, Ohio; "" Old Mill," Devils 

 Backbone, Hamilton County, Ohio; Miami Grove, Ohio; Piseco, New 

 York; Rock Island, Illinois; Spring-field, Ohio; Columbus, Ohio; Clif- 

 ton, Cincinnati, Ohio; Washington, District of Columbia; New York 

 City; Norwich, New York; Warwick, Massachusetts; Kelley's Island, 

 Lake Erie; Syracuse, New York; Las Vegas Hot Springs, New Mexico; 



FIG. 665. CYLISTICUS CONVEXUS (AFTER SARS). a, ANTERIOR LIP. 6, MANDIBLE, c, DORSAL VIEW 

 OF MALE, d, FIRST ANTENNA, e, SECOND ANTENNA. /, POSTERIOR LIP. g, HEAD (DORSAL VIEW). 

 h, MANDIBLES, i, LAST TWO SEGMENTS OF ABDOMEN AND TJROPODA. ,;', UROPOD. k, MAXILLIPEDS. 

 I, LATERAL VIEW OF MALE. , FIRST MAXILLA, n, SECOND MAXILLA, o, FLAGELLUM OF SECOND 



ANTENNA, p, FIRST PLEOPOD OF MALE, q, SEVENTH LEG. T, SECOND PLEOPOD OF MALE. 8, ABDO- 

 MEN (VENTRAL VIEW), t, FIRST PLEOPOD OF FEMALE. U. FIRST LEG. 



Saginaw, Michigan; also Sweden; Denmark; British Isles; German}-; 

 Bohemia; Holland; Belgium; France; Turkey; and coast of Norway. 



Found under bricks and boards; in woods, under logs; along roads, 

 under stones; in wood sheds. 



Body oblong-ovate, contractile into a ball, a little more than twice 

 as long as wide, 



mm. 



mm. 



Head about twice as wide as long, 1^ mm. : 3 mm., with the anterior 



