78 THE CANADIAN ENTOMOLOGIST 



fore femur and tarsi black. The third and fourth antennal joints and the basal 

 portion of the fifth yellowish green. Distal half of the fore femur brownish, 

 tibiae yellowish brown. 



Body rather oval, not elongated, without hairs. Antennae much shorter 

 than the body, without hairs. The relative lengths of the third and subse- 

 quent joints are as follows: III 22, IV 17, V 22, \T 50 (15 + 35). Rostrum 

 reaching the middle coxae. Cornicles very small, broader than long. Cauda 

 large, rounded at the apex. Legs short. 



Length of body 1.7 mm. Antenna 0.8 mm. 



Winged viviparous female. 



Nearly similar to the wingless female in colour. Wings hyaline, veins black. 



Antennae nearly as long as the body, the relative length of the distal four 

 joints is as follows': III 28, IV 23, V 25, VI 50 (15X35). The third joint 

 with about twelve large sensoria, the fourth joint wanting sensoria usually. 

 In some individuals the antennae are only 5-jointed. Cornicles broader than 

 long, broadest at the base, cauda large, the apex rounded, with some long, fine 

 hairs. Legs slender. The third oblique vein twice forked, booklets two. 



Length of body 1.1 mm. Fore-wing 2.2 mm. Antenna 1.0 mm. 



Host. — A plant belonging to the Gramineae. 



Type locality. — Tokio, Japan. 



This species is ^^ery common from August onwards throughout the sum- 

 mer, and during this period many winged females appear. 



TWO UNDESCRIBED PEDICIINE CRANE-FLIES FROM THE 

 UNITED STATES (TIPULID^, DIPTERA). 



BY CHARLES P. ALEXANDER. 



Urbana, III. 



The two ne\v species herein described were included in material sent for 

 determination. The new Dicranota found by Mr. Lindsey is of especial interest. 

 The Rhaphidolabis shows the greatest resemblance to R. tenuipes in its general 

 features, but the structure of the hypopygium shows it to be a very distinct 

 species. 



Dicranota iowa, sp. n. 



Size large (wing 9 over 9 mm.) ; general coloration light grey, the meso- 

 notal praescutum with four dark brown stripes; wings brownish grey, the stigma 

 and a seam along the anterior portion of the cord dark brown; Cell 3/^ lacking. 



Female. — Length 8—8.3 mm.; wing 9.5—10 mm. 



Rostrum and palpi dark brown. Antennae dark brown throughout, with 

 thirteen segments; in the female sex, the flagellar segments are short-cylindrical, 

 closely approximated. Head with the front and a narrow margin surrounding 

 the eyes light yellowish grey; vertex with the disk rich brown, becoming paler 

 on the occiput. 



Mesonotal praescutum light 3'ellowish grey with four dark brown stripes, 

 the intermediate pair separated by a capillary line of the ground colour; scutum 

 grey, the lobes dark brown; scutellum and postnotum grey. Pleura grey. 

 Halteres short, the stem yellow, brightest basally, the knobs brown. Legs with 



April, 1920 



