New or Little-known Exotic Tipulidae. 49 



spicuously light grey pruinose. Halteres dark brown. Legs with 

 the coxae testaceous, the basal half of each brownish grey ; trochan- 

 ters dark brown; remainder of legs brownish black. Wings with 

 a faint dusky tinge, a little more saturated near the wing- tip; 

 veins brownish black. Venation : Scl ending about opposite one- 

 fourth the length of Rs; Rl ending about opposite three-fourths 

 the length of Rs; Rs long, straight, about two and one-half times 

 the basal deflection of C'ul ; cell Isi 312 closed; outer deflection of 

 MS from one-third to nearly twice the length of m ; basal deflection 

 of C'ul at or just beyond the fork of 31; basal approximation of 

 1st A and Cit slight. 



Abdominal tergites black, the sternites more brownish. Oviposi- 

 tor with the valves long and slender. 



Hab. Colombia. 



Holoiype, ?, Condoto, June 27, 1913 {Dr. II. G. F. 

 Spurrcll). 



Type in the collection of the British Museum (Natural 

 History). 



Ceratocheilus niveitarsis, sp. n. 



Head dark brown, the front and anterior part of the vertex silvery 

 grey; mesonotum dark clove-brown, the humeral regions of the 

 praescutum abruptly citron-yellow; thoracic pleura yellow, the 

 mesosternum and mesepisternum with a dark brown blotch ; legs 

 black, the tarsi largely snov/y white ; wings with a strong brown 

 tinge; abdomen brown, variegated with obscure yellow; hypo- 

 pygium yellow. 



3Iale. — Length (excluding the rostrum) 5-5 mm. ; wing 6 mm. ; 

 rostrum alone 3-6 mm. 



Rostrum elongate, black, nearly one-half longer than the com- 

 bined head and thorax. Antennae brownish black throughout, 

 with twelve segments, the terminal segment minute; all flagellar 

 segments with verticils, these becoming very long on the four sub- 

 terminal segments; the second apparent flagellar segment is 

 indistinctly fused with the first flagellar segment ; flagellar segments 

 three and four are deeply incised beneath to form two apparent 

 segments, so the antenna may be interpreted as having fifteen 

 segments, the three basal pairs of flagellar segments being narrowly 

 connected on the dorsal side only. Front and anterior part of 

 vertex and a broad margin around the eyes light silvery grey ; 

 remainder of vertex and occiput abruptly dark brown. 



Pronotum dark brown above, obscure yellow laterally. Meso- 

 notal praescutum with three confluent dark clove-brown stripes, 



TRANS. ENT. SOC. LOND. 1922. — PARTS I, II. (JULY) E 



