292 Mr. Westwood on Diopsis, 



The size of the anterior femora, however, is a specific and not a sexual cha- 

 racter, those parts being of equal size in both kinds of individuals. 



It is worthy of remark, that in the species which have the wings unspotted, 

 neither the sides of the mouth nor the extremity of the four posterior femora 

 are, except in one instance, armed with spines. 



The species may be arranged in four groups : ] st, those with clear wings, 

 and the face and posterior femora unarmed ; 2nd, those with an apical spot on 

 the wings ; 3rd, those having a subapical abbreviated fascia ; and 4th, those 

 with one or more entire fasciae across the wings. In order, however, to place 

 the typical species at the head of the genus, I shall alter the position of the 

 groups as follows : 



Sectio I. Alisfascid aihreviatd paullo ante apicem. 



Species 1. Diopsis Ichneumonea. Linn. 



Tab. IX. Fig. 1. 



D. capite rufescenti, cornubus oculiferis ferrugineis, thorace nigro, spinis flavis, 



alis ante apicem macula nigra, abdomine segmentis duobus (tribus ?) ul- 



timis nigris. 

 Long. corp. e figuris Linnaeanis, lin. 4 vel 5. 



Habitat in Africa aequinoctiali ? In Mus. ? 



Linnd, Diss, de Bigis Insect, p. 5. tab. /. 1 — 5. Amcen. Acad. vol. viii. p. 303. 



Fuessly, Archiv. 1 . t. (6.) edit. Gale, p. 1 9. Gmelin, Syst. A'af. torn. i. pars v. 



p. 2829. Latreille, Hist. Nat. Gen. vol. xiv. p. 3/6. tab. 14./. 6—7. Diet. 



d'Hist. Nat. xxiv. 43.5. tab. 112. /. 6, 7. (e citat. Fabr. et Dalm.). Gen. 



Crust, et Ins. vol. iv. p. 353. Diet. d'Hist. Nat. vol. ix. p. 477- pi- D.y. 5, 6. 



Cuvier, R^gne Anim. ed. 1 . torn. iii. p. 650. Olivier, Enc. M4th. Q.\. p. 276. 



Lamarch, Anim. sans J^ertebr. torn. iii. p. 370. Dalman, Act. Holm. 1817- 



211. Anal. Ent. p. 3. No. 1. Ohen, Ms, 1820, p. 502. Wiedemann, Aiisser. 



Zweijl. Ins. vol. ii. p. 557. Shaw, Gen. Zool. Ins. vol. ii. pi. 104. 

 " Corpus magnitudine Formicce rubrce, statura Ichneumonis. Caput rufescens, 



dente utrinque ad os : extenditur hoc in duo cornua, patentia, longitudine 



thoracis, solida, neque articulata, uti antennae, ferruginea, terminata oculo 



globosOj flexo, nigro. Adjecto juxta oculum puncto cum seta, antennae 



