Insects. 1155 



Sp. 3. Stelis octomacuiata, Smith. 



Female. — Length, 3 lines. Black. Head and thorax closely punc- 

 tured, a few silvery hairs on the face. Wings subfuscous, the margins 

 clouded. Legs beneath with a thin white pubescence, the tarsi fer- 

 ruginous. Abdomen rather deeply punctured, the first segment has 

 two ovate cream-coloured spots placed laterally, the second, third and 

 fourth have lateral oblong streaks of the same colour, acute within. 



Male. — Length, 2j lines. Black, punctate. The face has a little 

 hoary pubescence, and a few hairs of the same colour are thinly scat- 

 tered on the thorax. Scutellum rotundate. Abdomen, the first and 

 second segments have an oval macula at their lateral margins, the 

 third an ovate macula, with a thin short line running from it inwards, 

 the fourth, two smaller maculae on each side, the fifth, a single minute 

 one beneath the two former, the sixth and seventh segments are im- 

 maculate ; the terminal one entire. 



Two specimens of the female of this species were captured by a 

 relation, at a spot where Osmia leucomelana is found. This season, 

 at the same locality in Hampshire, I took the male here described. I 

 have no hesitation in placing them together, as there is, in addition to 

 time and place of capture, a very strong affinity in general resem- 

 blance. The three specimens mentioned are, I believe, all that have 

 been met with of this species. 



Sp. 4. Stelis mixuta, Serv.. St. Fargeau. 



Male. — Length, 3 lines. Black, finely punctured. Head subquad- 

 rate. Face clothed with a thin hoary pubescence, as well as the sides 

 of the thorax and beneath. Wings slightly fuscous. Abdomen, the 

 second and third segments have on each side a cream-coloured macu- 

 la, the terminal segment is entire. 



This species has hitherto remained unique in Mr. Thwaites' collec- 

 tion : it differs from the male of S. octomacuiata in the form of the 

 head, and in having only four maculae on the abdomen. St Fargeau 

 has described the female ; the abdomen, he says, has an ovate macula 

 on the three first segments, otherwise resembling the male. 



Frederick Smith. 

 High Street, Xewington Butt<. 

 September, 1845. 



