Leptiditlae. 155 



S. crassiconiis is rare in Deninarlc, only about ten specimens 

 have been taicen; Dyrehaven (H. I. Hansen), al Soro; Jutland at Frijsen- 

 borg (H. I. Hansen) and at Holstebro. The only date of capture I 

 i<novv is in Juiy. 



Geographicai distribution : — Europe from the northernmost Sweden 

 down into France. Zetterstedt records it as taken from •'"'/i; — '"/». 



5. Ptiolina Zett. 



(Zett. 1842. — Stægef in litt. 1838.) 



Species of rather small size and dark colour. Head as broad as 

 or sliglitly broader than the thorax, semiglobular, with a flattened 

 face. Antennæ inserted near to each other in the middle. Yowls 

 horizontal, not produced below the eyes. Antennæ three-jointed, the 

 two basal joints short, the third oval, compressed, 

 terminating in a fine style. Eyes bare, in the 

 male the upper facets larger than the lower, the 

 dividing line sharp. About the mouth parts I can 

 say only little, as I have not been able to dissect 

 them; they seem to resemble those of Leptis; 

 the proboscis is moderately short, the labeila F'g- *6- Antenna of 

 somewhat protruding; the maxillary palpi siniiiar 



to those in Leptis. Thorax is nearly quadratic. Abdonien somewiiat 

 elongate, consisting of seven segments, truncate at the apex in the 

 male on account of the somewhat knobbed genitalia; in the female 

 terminating in an ovipositor with two lamellæ. Front tibiæ with no 

 apical spurs, middle tibiæ with two, hind tibiæ with one apical spur; 

 no longer hairs on the front tarsi. Wings with the anal cell closed. 



The larva of one species, P. nigripes Zett., has been described 

 by Brauer (Denkschrift. d. Kais. Akad. d. Wiss. Math. Nat. Classe, Wien, 

 XLVll, 1883, 43, Tab. III, Fig. 41—42). It is cylindrical, tapering 

 towards the head, truncate at the hinder end, of emerald green colour. 

 Mouth consisting of a median labrum with five teeth, flat, hooked 

 mandibles, movable vertically, soft maxillæ with one-jointed palpi 

 bearing a bristle on the apex;' there are two-jointed antennæ on the 

 sides farther back, and behind these lies the large, black pigmented 

 eye-spot. The body consists of twelve segments; the fu'st to seventh 

 abdominal segments have on the ventral side each three to four 

 transverse swellings. The last segment divides apically into an upper 

 and a lower lip, the upper lip is the largest and has two recurved, 

 chitinised hooks and six longitudinal swellings, the lower lip is formed 

 of two conical warts; between the lips lie the terminal spiracles; 



