214 Dr. F. Ris on neic 



n o;reat minibcr of very interesting Libellullnaj, collected for 

 tlie Imperial Bureau of Entomolo<iy (formerly the Entomo- 

 logie;il Kesearcli (\immittee, Tropical Afiiea) in Nigeria, 

 Sierra Leone, ami British East Africa. Many records from 

 the earlier consignments, especially those from Nigeria, were 

 entered in the main text of the monograj)h and published. 

 Others ai rived too late for that purpose, but in p;ood time 

 for the "Additions," which, together with the indices, were 

 due to be issued in 1914:, being the last instalment of the 

 nuinogra|)h. The lamentable situation in Europe generally, 

 and in Belgium es])ecially, leaves us little hope of seeing 

 that last part j)ublislud in the near future. In the beautiful 

 collection sent home from Sierra Leone by Dr. J.J. Simpson 

 there were four new species, one of them representing an 

 interesting new genus. Instead of separate publication, 

 which was originally discussed, insertion of the novelties in 

 the monograph was preferred, U])on tiie assumption that the 

 "Additions" would ajipear without any long delay. But 

 under the changed conditions of to-tlay, separate j)ublication 

 was again considered, and decided upon. Mr. H. Champion has 

 kindly read the descriptions for correctness of language, they 

 being the author's own translation from the original German 

 text. 



All the type-specimens have been presented by the 

 Imperial Bureau of Entomology to the British Museum 

 (Natural History). 



Allorhizucha campioni^ sp. n. 



2 cJ , 2 ? , Sierra Leone ; Ka Yima, Kangama, Gigbema, 

 Dumballa, U, 29. vi., 22. viii., 7. ix. 1912 [Dr. J. J. 

 Simpson) . 



Closely allied to Allorhizucha kliiigi, Karsch, but differing 

 in the following details : — (a) greater number of cubito-anal 

 cross-veins (Cuq), 4 in front wing, 3 in hind wing; (b) at 

 the humeral suture a narrow interrupted light green line ; 

 (c) the greenish-yellow stripes on the sides of the thorax 

 a little narrower, slightly concave instead of straight at 

 anterior margin ; (d) abdomen of male distinctly fusiform ; 

 (e) snperior appendages a little longer ; ( /') slight difference 

 in genitalia of second segment, the internal branch of the 

 liamule being more erect (nearly as figured in Lib. fig. 52 

 for A. preussi, Karsch). Minute as these differences are, 

 they ai)j)ear suflicicnt in their totality to justify sjiecific 

 distinction, the more so as there are specimens brought by 

 Dr. Simjjson, also from Sierra Leone, that agree ])erfectly 

 with A. klingi, as described in Lib. p. 81. Tiie interesting 



