1876.) 261 



Thi3 species is not common, but seems to be generally distributed 

 in England and Scotland. 



4. SiMiLis, n. s. 



Colour and markings as in S. carnctria. Thorax ^vith four pos- 

 terior dorsal bristles. Second abdominal segment destitute of central 

 spiues upon the edge. Length, 4 — 7^ lines. 



This species only differs from S. carnaria in one essential point, viz., by the central 

 portion of the edge of the second abdominal segment being unarmed with spines. The 

 bristles in the dorsal thoracic rows are similar in number, size, and arrangement to those in 

 species 1. The specimens vary in size greatlj', as in that species; and the legs are ciliated 

 in the same manner, many of the large specimens having quite a long beard upon the middle 

 tiliie of the <J, when they correspond to the S. matertera of Rondani. The ? resembles /"'^ 

 the <J, except in the hairiness of the legs, and in the width of the frontal space. 



Generally distributed, but much less common than S. carnaria. 



5. MELA^-^EA, Meig., Maeq., Zett., Walk., Eond. 



Yellowish - grey, striped and tessellated Avith brownish -black. 

 Frontal space wide. Thorax with three posterior dorsal bristles. Se- 

 cond abdominal segment without central spines. First anal segment 

 in ^ black, and extruded. Costal spine of wings distinct. 



Length 4 — 5 lines. 



Head: forehead rather less prominent than in S. carnaria. Frontal space equal in 

 width in <J to one-third of the head, and equal to nearly half in ?. 



Thorax : three posterior and two anterior dorsal bristles, as in S. alhiceps. 



Abdomen without central spines upon the edge of the second segment, iioth the anal 

 segments in S shining black, the first ex- 

 truded. Winjs mostly with a distinct 

 costal spine. Legs with middle tibiae of 

 i shortly ciliated. In general colour and 

 design similar to S. carnaria, but the black 

 is usually of a more rusty tint, and the 

 white and grey spots on abdomen are some- 

 times of an olive tint. 



The ? rt'scnjbles the <J . 



This well-marked species is generally distributed. 



G. AanicOLA, Meig.?, Macq.?, Zett, Eond. 



Yellowish-grey, striped, and tessellated in black, in tlic ordinary 

 manner. Buccal setae a little enlarged. First anal segment of ^ grey 

 and mostly retracted. Posterior tibia; of J thinly bearded. 



Length, 3 — 4 lines. 

 This species resembles S. melanura in the numb.-r of thoracic dorsal bristles, mid by tlio 

 absence of central spines upon the second abdominal segment ; but it diflTer,! in having the 

 frontal space narrower (it not occupying more than one-fourth of the width of the head iu 



