AMERICAN APTERA. 403 



of hind legs not swollen ; mandibles rather small. One pair 

 of eyes present. 

 One species. 



Calig'onus cardinalis n. sp. 



(Plate XIII., Figs. 3, 4.) 



Bright red ; legs somewhat paler than the body. 



Cephalothorax small and almost twice as broad as long. Beak 

 about as long as the cephalothorax. There is a single pair of eyes 

 situated at the extreme postero-lateral aspect of the cephalothorax. 

 Beak hairless. Mandibles sharp, pointed, each with two subequal 

 bristles near the middle of the outer margin. Palpi large, about twice 

 as long as the beak ; second segment the longest ; third segment 

 three-fifths as long as segment two ; fourth segment two-thirds as long 

 as third ; distal segment very small, rudimentary. All the segments 

 of the palpi bear a few simple bristles except the proximal one ; seg- 

 ment four has on its distal margin a small, chitinous hook ; segment 

 five is armed at its distal end with two large, stout bristles, which are 

 inclined inwards and apparently are adapted for grasping and holding 

 prey. 



Abdomen almost twice as long as broad ; bearing two prominent, 

 slightly curved, simple, shoulder bristles, somewhat longer than the 

 width of leg one , two pairs of somewhat longer, sharply recurved 

 bristles are situated at the anterior margin of abdomen ; the inner pair 

 being about one-half its length from the median plane ; a pair of bristles 

 is sisuated near the middle of the dorsal surface of the abdomen and 

 very near the median plane. There is a row of five bristles on each 

 side of the abdomen about one-half the distance from the median plane 

 to the lateral margin ; two pairs of bristles are situated near the tip of 

 the abdomen ; the inner straight, and situated slightly above the lateral 

 margin ; the outer curved and situated slightly below the lateral mar- 

 gin. Anus at the tip of the abdomen and slightly ventral in position ; 

 just behind it are two small short, stout bristles. 



Legs subequal in length ; first pair of legs slightly shorter than the 

 length of the body. ; distal segment of leg one, one and one-half times 

 as long as penultimate segment. All the segments of the legs have 

 approximately the same width, excepting the basal segment, which 

 is somewhat broader than the rest. Claws of legs bidactyle, with a 

 a small narrow caruncle between the dactyles. Tarsus of each leg 

 terminating in a few long, simple bristles ; tarsi of legs one and two 

 broad at the tip ; tarsi of legs three and four not broadened at the tip. 



Length, 0.38 mm. ; breadth, 0.20 mm. 



In moss. Collected by the writer at Urbana, Illinois. 

 Many specimens. 



TRANS. AM. ENT. SOC, XXXV. NOVEMBER, 1909 



