CYLTNDROTOMA. 313 



the length, united also to the costal near its tip by a veinlet, which is 

 opposite the middle of the stigma ; radial and cubital springing from 

 a common petiole, which they rather exceed in length, and which pro- 

 ceeds from the subcostal at half the length of the wing ; cubital joined 

 close to its base to the third externo-medial by a veinlet, whose angle 

 emits the first externo-medial ; the latter is forked at half its length, 

 and is joined very near its fork to the third externo-medial by a veinlet, 

 whose angle emits the second externo-medial ; third externo-medial 

 joined to the subanal by a veinlet at one-third of the length of the 

 discal areolet ; subanal curved hindward at its tip ; anal and axillary 

 complete ; discal areolet long, hexagonal. Abdomen with eight seg- 

 ments, elongated, slightly depressed, very narrow at the base, slightly 

 widened about the middle. Legs slender, rather long, nearly bare, un- 

 armed ; COXEB not elongated ; posterior tibiae with minute apical spurs. 

 Male. Antennae a little longer than the thorax ; joints nearly cylin- 

 drical. Abdomen clavate at the tip ; the forceps extended, broad, 

 curved. Fern. Antennae a little shorter than the thorax ; joints nearly 

 round. Abdomen somewhat tumid at the tip, with subfoliaceous, acute, 

 lateral lamellae. 



1. distinctissima, Wied.; Meig. Zw. i. 131. 27 (1818); Mcq. ; 

 Schumm. ; Zett. ; Staeg. ; Ross. (V.) brevicornis, Zett. I. L. Testa- 

 cea, palpis antennis thoracis disco maculisque quatuor lateralibus ni- 

 gris, metathorace pectoreque nigro-unimaculatis, alis subcinereis, abdo- 

 minis apice nigro, femoribus apice tibiis tarsisque nigris. Long. 5-6 ; 

 alar. 9-11 lin. 



Testaceous. Palpi and antennae black, testaceous at the base. Disc 

 of the thorax black ; two black dots on each side, and one on the me- 

 tathorax ; a large black spot on the pectus. Wings greyish ; stigma 

 brown. Halteres pale testaceous, with black knobs. Abdomen dull 

 testaceous, black at the tip. Legs black ; femora dull testaceous, with 

 black tips. 



Not common. Inhabits woods. (E. S. I.) 



2. diversa, n. Cana, thorace vUtis tribus nigricantibus, alis lurido- 

 cinereis, abdomiue vitta dorsali nigricante, peclibus testaceis, femoribus 

 tibiisque apice tarsisque nigris. Long. 6 ; alar. 10 lin. 



Hoary. Palpi and antennae black. Thorax rcith three blackish 

 stripes. Wings lurid-grey ; stigma brown. Halteres brownish. Ab- 

 domen lurid, with a blackish dorsal stripe. Legs dull testaceous ; tips 

 of the femora, of the tibiae, and of the tarsi, black. 



This species differs from the typical C. distinctissima in the fol- 

 lowing characters of the wing-veins : Veinlet between the sub- 

 costal and the costal more oblique ; veinlet between the cubital 

 and the third externo-medial much further from the base of the 

 cubital ; discal areolet nearly tetragonal. Rare. (S.) 



VOL. iv. 2 s 



