ENTOMOSTEACA OF MINNESOTA. 133 



about ten teetb, the ui3per thick aud blunt, the inner sharp, slender 

 and longer. Several are notched at tip. The lower angle bears a 

 long simple bristle. Mandibular palpus two-jointed, second joint with 

 three long terminal hairs and a shorter spine attached at basal third 

 of anterior margin, jointed at base and directed towards tip, like a 

 dactyl. The maxilla and maxillarj^ palpus are scarcely to be distin- 

 guished from those of C. staphyUnus. 



"The first maxillipeds are three-lobed, the outer lobe constituting 

 a long, strong claw. The second and third are about one-third as 

 long as the first, and bear each one strong simple spine and one weak 

 branched hair. The inner lobe is widest, about two-thirds as wide as 

 long. The dactyl of the posterior maxilliped is spinous on its inner 

 edge, and the same edge of the hand is ciliate and bears a short, stout, 

 sparingly plumose bristle at its base, just beyond the tip of the closed 

 dactyl. The width of this joint (the second) is nearly half its length. 

 "Basal joint of inner ramus of first pair of legs nearly or quite as 

 long as outer ramus, the second wider but only half as long as the 

 third, and obliquely truncate. Inner ramus of third pair of legs in 

 male is three jointed [the outer two-jointed]*, chelate. The finger is 

 ovate, truncate, terminating in two long plumose hairs. The dactyl 

 is linear, curved at base, and twice as long as finger. The inner 

 ramus of the fourth pair of legs is about half as long as outer, two- 

 jointed, basal joint short, terminal joint about as long as middle joint 

 of outer ramus. The fifth pair of legs is best developed in the female. 

 In the male the length is not over one-third the width. The basal 

 portion bears three plumose hairs on its very broadly rounded ante- 

 rior margin, of which the innermost is longest. The outer plate is 

 nearly orbicular and bears five spines on its terminal margin, of which 

 the second from the internal angle is the longest. Genital plates, 

 found in male at posterior border of first abdominal segment, beneath, 

 are short, slightly expanded internally, with internal angles rounded, 

 and externally bear three subequal bristles, jointed at base, the inner 

 largest and strongest aud semi plumose. The antenna3 of the female 

 are eight jointed, extending backward to the first free segment. The 

 basal joint of the fifth pair of legs is subelliptical in outline, with the 

 basal half produced externally into a broad, triangular process which 

 bears the second joint on its posterior margin. The free end of the 

 basal joint bears six large plumose bristles, of which the inner is long- 

 est. The greatest width of the joint is nearly equal to its greatest 

 length. The second or outer joint is ovate, subtruncate, spined on 

 each margin, and bears four plumose bristles at tip aud one at the 

 middle of its outer margin. Its length is about twice its breadth." 



* Evidently a misprint, for it is the inner ramus which is chelate. 



