154 CRABRO CLYl'KATL'S. 



Crabro lapidarius, Fabr. Syst. Piez. 309. C. 

 tan d. Lind. Obs. ii. 55. 1 I. 

 Smith, Cat. Brit. Hym. p. 120. 

 Thyreopus clypeatns, St. Far//. Ann. Soc. Ent. Fr. iii. 758. 4 c * . 

 Solenius lapidarius, St. Fary. Ann. Soc. Ent. Fr. iii. 721. 8 ¥ ; 

 Hym. iii. 117. 1. 



Female. Length 4 lines. — Black, punctured ; head quadrate, as 

 wide as the thorax, very closely punctured, subcontinent ; the 

 civ peus covered with silvery pubescence ; the scape and basal 

 joint of the flagellum yellow. Thorax coarsely punctured, the 

 punctures confluent, running into lines on the seutellum ; a 

 narrow line on each side of the anterior margin of the protho- 

 rax, the tibiae, tarsi, and femora towards their apex, yellow, the 

 apical joints of the tarsi fuscous ; wings subhyaline, the ner- 

 vures testaceous, the tegulae rufo-piceous. Abdomen closely 

 punctured ; each segment with a broad yellow fascia, the first 

 three interrupted. 



Male. Length 4 lines. — Black ; head and thorax deeply and very 

 closely punctured ; the head narrow er than the thorax, and nar- 

 rowed into a neck behind, depressed in the middle before the 

 ocelli ; the scape and two or three of the basal joints of the fla- 

 gellum yellow, the rest fulvous beneath; the clypeus covered with 

 silvery pubescence. Thorax elongated and narrowed in front ; 

 the metathorax truncated and transversely rugose, and having 

 a deep central longitudinal channel ; the wings fusco-hyaline, 

 with the nervures and tegulae testaceous ; the legs yellow, with 

 a black line beneath the anterior and intermediate femora ; 

 the posterior femora black, with a yellow line in front ; the tibiae 

 rufo-fuscous within, with a dark stripe in front ; the anterior 

 tibiae dilated behind ; the basal joint of the tarsi expanded into 

 a subrotund concavo-convex plate, the two following joints 

 slightly dilated. Abdomen punctured ; each segment with a 

 yellow fascia, the first four more or less interrupted ; beneath, 

 the second with a large subquadrate macula, which is widest 

 behind, and produced at the lateral angles ; the third, and some- 

 times the fourth, with a yellow band. 



I have carefully examined the typical specimen in the Linnean 

 Cabinet, and can detect no difference between it and a specimen 

 which I captured in 1848 at Wey bridge. Shuckard says the 

 Linnean insect differs from his C. vexillatus, but he does not state 

 in what particulars ; I confess I could not detect any. In 1853 

 I captured the C. lapidarius very near the spot where I had for- 

 merly taken C. clypeatus. I have little doubt it is the female of 

 the latter ; — the habit of the insects is the same. 



