237 



SOME NEW MOSQUITOES FROM CEYLON. 



BY 



F. V. Theobald, M,A., 

 Communicated by E. Ernest Green, F. E. S. 



(With Plates A & B.) 



A small colleotion of mosquitoes taken by Mr. E. E. Green in Ceylon 

 included four new genera and eight new species which are described 

 here. Besides these, a single 9 of Donitz's Anopheles deceptor ; 9 '& 

 of Myzorhynchus barbirostris, Van der Wulp ; 9 's of Giles Stegomyia 

 pseudotceniata, also 9 Tceniorhynchis ager, Giles ; Culex tigripes, Grand- 

 pre ; Mansonia annulifera, Theobald— all new to the Island. 



The Anopheles deceplor shows, on examination of the scales, to belong 

 to Meigen's genus Anopheles as recently restricted by me. 



Some $ and 9 Myzomyia ross u, Giles, were very pale varieties. No 

 other species in the collection had any peculiarities. 



Two of the new genera Lophoceraomyia and Rachionotomya are of 

 particular interest on account of their peculiar structure, the latter 

 having a large scutellar spine, the former a strange modification of the 

 verticillate hairs which appear to form definite organs ; what purpose 

 they serve is at present unknown. 



Genus MEGARHINUS, Rob. Desvoidy. 

 Essai sur les tribu des Culicides, Mem. Soc. d Hist, de Paris, TIT, p. 412 



(1827). 



Megahhinus minimus, nov. pp. (fig. 1). 



Thorax shiny black with metallic bronzy scales, some blue and greeii 

 scales at the base of the wings ; pleurae silvery white ; prothoracic 

 lobes blue. Head bronzy brown with metallic green and blue border 

 around the eyes. Palpi long, acuminate and thin, deep violet ; pro- 

 boscis deep violet. Abdomen metallic violet and purple with creamy 

 lateral spots, the apical segment coppery red ; basal lobes of genitalia 

 deep brown. Legs brown with violet reflections, creamy at the base 

 of the femora and below the femora. 



$ Head black with deep bronzy brown flat scales behind and over 

 most of the surface with sometimes metallic reflections and with 

 metallic green and blue scales around the eyes. Two black onsetse 

 project forwards between the eyes and one on each side of the median 

 pair. Antennje brown, the basal joint large and globular, black with 



