156 ERNEST HILL AND L. G. HAYDON. 



on distal extremity. N.B. — Photographs of x^ahnate hairs are neces- 

 sarily taken from dried specimens mounted in Ijalsam. There is some 

 shrinkage in prepai'ation, which makes a little difference in appearance. 

 The drawings are taken from speciraens preserved in formalin. Some 

 points are brought out better in the latter, and on this account both 

 drawing and photograph ai-e reproduced. 



PLATES XV— XXIII. 



From drawings. Main figure : dorsal aspect of head, thorax, and 

 first three al^dominal segments of larva. Figures : (a) frontal hairs ; 

 hairs represented on opposite sides in coiTesponding positions of the 

 plate are taken from right and left of the same larva; (fe) palmate 

 hairs ; (c) rudimentary palmate hairs ; (d, e) frontal hairs further 

 enlarged; (/) dendriform hair on first abdominal segment of rare 

 specimens of My zorhynchus paludis ; (c 1. c 2) rudimentary hairs on 

 first and second abdominal segments of Cellia jacobi. 



PLATE XXIV. 



Reproductions of photographs of (« — k) palmate hairs of larvae, (o) 

 funesta; (b) costalis; (c) cinereiis: (d) ardensis ; (e) pretori- 

 ensis; (/) squamosa; (g) jacobi; (h) paludis; (k) natalensis. 

 (/) lai'va of Myzorhynchus paludis at surf ace of water. 



PLATE XXV. 



Reproductions of photographs of {a — 7n) wings of female imago. («) 

 funesta; (&) costalis; (c) cinereus; (d) ardensis; (e) pretori- 

 ensis; (/) squamosa; (g) jacobi; (h.k.l) paludis; (m) natal- 

 ensis. 



PLATE XXVI. 



Reproductions of photographs of: («) funesta: head and palj)i ; (b) 

 costalis : head and palpi; (c) cinereus : head, palpi, and part of hind 

 leg ; {d) ardensi s, head, palpi, and legs ; (e) pretoriensis :^ head and 

 palpi, part hind and mid legs ; (/) squamosa: head and palpi ; (gr) j a c o b i : 

 headandpalpi; (/i) paludis: head and palpi ; (A;) paludis: hind tarsi ; 

 (?) natalensis : head and palpi ; (12) natalensis: legs. 



1 In specimens obtained from larvse captured at sea level there is a broad 

 black band at the proximal extremity of the third hind tarsus, which has 

 not been found in specimens taken on higher levels. The photograph was 

 taken from a coast specimen. 



