278 Mr. H. Campion on new 



Three species from West Africa which liave come before 

 me recently I noAv propose to describe as new. That from 

 Southern Nigeria is represented by a single male which has 

 been in the Britisli Museum for several years. The re- 

 maining species were contained in collections received by the 

 Imperial Bureau of Entomology, one from Dr. James J. 

 Simpson while visiting Sierra Leone on behalf of the Bureau, 

 and another from Mr. W. H. Patterson, the Government 

 Entomologist in the Gold C^oast. 



The new species all exhibit the interesting structure, 

 characterizing the genus, to which Dr. Ris has draw^n atten- 

 tion in the first of the papers ^ited above (p. 45). This 

 structure consists of a sharply-defined ridge crossing the 

 frons transversely, just in front of the antennae, and parallel 

 with the more anterior ridge separating the anteclypeus from 

 tlie postclypeus. The frons is thus divided into a horizontal 

 portion lying on the summit of the head and a vertical ante- 

 rior portion placed almost at a right angle with it. 



The males of the four African species now under con- 

 sideration may be tabulated thus : — 



I. The vein A* arising exactly at the lerel of tlie 



cubito-aua] cross-vein. Two black teeth on the 

 apical margin of segment 10, one on each side 

 of the excision. 



A. \\'ings conspicuously yellow. 



a. Thorax rusty brow n above ; abdomen orange- 



red ; largest species (abdomen 29"5-33 mm., 



hind wing circa 20 mm.) (jJabrmn, Burm, 



II. The vein A* arising a little before the level of the 



cubito-anal cross-vein. Apical margin of seg- 

 ment 10 not toothed. 



B. Wings conspicuously yellow. 



b. Thorax dark greenish yellow above ; abdo- 



men for the most part pale lemon ; species 

 of intermediate size (abdomen 25'5 mm., 

 hind w'ing 165 mm.) citrinum, sp. u. 



C. Wings entirely hyaline. 



c. Thorax dark green above ; abdomen light red ; 



species of intermediate size (abdomen 26 



mm., hind wing 17 mm.) corallimim, sp. n. 



d. Thorax dark chocolate-brown above ; abdo- 



men crimson ; smallest species (abdomen 



24 mm., hind wing 15 mm.) ignituvi, sp. n. 



Ceriagr'ion citrinum, sp. n. 



(J adult (holotype). — Length of abdomen, including anal 

 api)endages, 25'5 mm.; length of hind wing 16-5 mm. 



Labium, labrum, gena', anteclypeus, and back of head 

 yellow. Postclypeus, frons, and upper surface of head dark 



