14 HENRY F. CARTER. 



Leptoconops irritans, Noe. 



Mvcterotypns irritans, Noe, Atti R. Accad. Lincei, Ser. 5, Rendiconti xiv, 

 p. 118 (1905) ; Arch. Zool. Napoli, iii p. 138 (1907). 



Centrotvpus irritans, Grassi {nomen nudum), " Die Malaria : Studien eines 

 Zoologen," Jena, pp. 118-122 (1901). 



This species occiirs with L. hezzii (see page 17) in the Roman Campagna, where, 

 according to Noe, it is very abundant from June to the end of July, and may be found 

 in diminished numbers late in August. The female only is known, and in this sex the 

 species may readily be distinguished from L. bezzii by its general facies. Noe confined 

 himself to a comparative description, and gave the following principal differences 

 between it and the latter species. 



Size smaUer (length, T5 mm. ; spread of wings, 2 mm.) ; proboscis and palpi 

 relatively longer, the former more slender, cylindrical ; antennal hairs sparser and 

 more spinose ; claws simple, the large basal tooth replaced by a robust bristle ; 

 abdomen white, becoming Isabella-coloured dorsally. 



To these I am able to add further details of specific importance, obtained from 

 Sardinian specimens sent me by Professor M. Bezzi. 



$. — -Length of body (one specimen), 1-7 mm. ;- length of wing, IT mm. ; length 

 of antenna, 0'53 mm. ; width of head, O'SO mm. 



Eyes separated by about one-third the width of the head. Antennal segments 

 4 to 12 transversely oval to spherical, the length from 0'7 to TO the width ; terminal 

 segment about two and one-third times as long as wide, slightly longer than the two 

 preceding segments together. Scutellum with two pairs of bristles. Metatarsi of the 

 fore and middle legs with a few small but distinct spines ventrally, of the hind legs 

 with short, stout bristles, intermixed with which may be one or two spines. Lamellae 

 approximately one-fifth the length of the wing. Spermathecae two (in the single 

 preparation examined a third, very small, oval spermatheca was also present), highly 

 chitinised, oval, relatively large (64^t x 36/<), the commencement of the duct 

 chitinised for a very short distance. 



Noe's figure of the female palpi shows an exceptionally long, slender terminal 

 segment. This segment, if the drawing is accurate, is considerably longer than the 

 third (the ratio being T2 ; 1) — a condition which does not occur in any other species. 

 Unfortunately in the specimens at my disposal the palpi are absent or so damaged or 

 arranged that details cannot be observed. 



Habitat. Italy : Roman Campagna ; Sardinia, Cagliari. According to Weiss, 

 Bezzi believes that both L. irritans and L. bezzii are widely distributed in Northern 

 Italy. 



Leptoconops rhodesiensis, sp. nov. 



?. — Length of body, 2-5 mm. ; length of wing, 1-2 mm. ; length of antenna, 

 0*4 mm. ; width of head, 033 mm. 



Head shining black, clothed with short, blackish hairs on the vertex and occiput ; 

 clypeus dark brown, with several (about twelve) dark-coloured hairs ; eyes rather 

 widely separated, the space between them about one-third the greatest width of the 

 head. Proboscis dark brown or black. Palpi (fig. 2, c) dark brown, with dark hairs ; 

 third and fourth segments elongate, the third much swollen, with the orifice of the 

 sensor}- pit moderately large, subcircular, and almost centrally situated, the fourth 

 slightly longer than the third. Antennae (fig. 5, e) dark brown, with short paler brown 

 hairs and relatively stout blunt spines ; segments 4 to 13 transversely oval to sub- 

 spherical, the length being from 0-6 to 0-9 times the breadth ; fourteenth segment 

 ovate, as long as the two preceding segments together. Thorax shining black, clothed 



