142 APID.E. 



Coelioxys quadridentata, Smith, Zool. iii. 1151 ; Entom. iv. 2 & 5; 



Bees Great Brit, 146. 

 Apis quadridentata, Linn. Syst. Nat. i. 958 S ■ 

 Apis conica, Linn. lib. cit. 058 2 • 



Anthophora quadridentata et conica; Fabr. Syst. Piez. 379, 380. 

 Coeliox3 T s conica, Latr. Gen. Crust, et Ins. iv. 107 ? 



Schenck, Nass. Bien. 304. 



Gerst. Stett. ent. Zeit. (1809) 170 S 2 • 



Thorns. Ojmsc. Ent. 42 ; Ilym. Scand. ii. 272. 



Coelioxys acuta, Nyland. Notis. ur Sdllslc. pro Faun, et Flo. Fenn. 

 i. 250 2 • 



Foerst. Verh. Pr. Bheinl, x. 274 $ . 

 Coelioxys fissidens, Foerst. lib. cit. 2U3 J . 

 Coelioxys fraterna, Foerst. lib. cit. 294 J . 



Female. Length 5-5| lines. — Black; the head and thorax closely 

 and strongly punctured, the face densely covered with yellowish- 

 white pubescence, that on the anterior margin of the clypeus ful- 

 vous. Thorax — the sides and beneath with white pubescence ; 

 wings subhyaline, their apical margins clouded ; the calcaria at the 

 apex of the intermediate and posterior tibiae black, those on the 

 anterior tibiae rufo-testaceous ; the posterior margin of the scutel- 

 lum slightly but obtusely angulated ; the lateral teeth short, sub- 

 acute and slightly curved. Abdomen shining, punctured, the 

 punctures strongest and closest at the base and at the sides ; the 

 apical segment very finely punctured and with a longitudinal cen- 

 tral carina ; the apical ventral plate produced beyond the superior 

 one, rather broadly lanceolate. ( Vide PI. IX. figs. 2 o, 2 p.) 



Male. Length 4| lines. — Black ; the head and thorax punctured 

 as in the other sex, the abdomen rather more strongly and evenly 

 so ; the face with a dense white pubescence, which becomes slightly 

 yellowish towards the vertex. Thorax as in the other sex, with 

 the calcaria as in the female ; the apical segment produced at the 

 apex into two stout bifurcate processes ; the teeth acute, the lower 

 teeth projecting beyond the upper ones, also a stout blunt tooth at 

 the basal lateral margins of the segment ; all the segments with a 

 fascia of white pubescence on the dorsal and ventral plates. B.M. 



This is a very local species. C. elongata is frequently mistaken 

 for it ; but the different- coloured calcaria, which are pale in C. sim- 

 plex, will at once separate them, as well as the anal valves, which 

 in C. quadridentata are quite different in form from the long acute 

 ones of O. simplex. The insect described is certainly the Linnean 

 species ; both sexes have been carefully compared with his types in 

 the Museum of the Linnean Society, the figures of the ventral plates 

 given in this work being drawn from them. 



2. Coelioxys elongata. 



C. atra ; scutello utrinque dente incurvo armato, margine postico 

 subangulato ; abdominis segmento apicali elongato, producto, 

 semilanceolato. 



