280 CHARLES A. BLAKE. 



as in M. SanvitaU ; the abdomen is smooth and shining, the segments slightly 

 contracted, with the last segment terminated by a recurved spine. Length 8 ram. 

 Female.— Jled, with the abdomen black, with the exception of the first segment, 

 which is equally red. Length 5 mm. 

 Hab. — Cuba. 



Methoca stygia Say. 



Male. — Body entirely black, immaculate, punctured, mandibles piceous at tip ; 

 near the tip one toothed ; wings hyaline, nervures black, the separating nervure 

 of the first and second cubital cellules wanting ; stigma obvious, black ; abdomen, 

 segments contracted near the incisures, oviduct not extending beyond the ter- 

 minal processes and concealed beneath them. Length two-fifths of an inch. 

 (10 mm.) 



Hab. — Indiana. 



Resembles Sanvifali Latr., but is larger, with a much larger stigma 

 and each abdominal segment is much more contracted before its pos- 

 terior incisure. (Say.) 



The following descriptions are too meagre to identify ; they will 

 apply to several of our North American species, so I give them in 

 the original : 



Iflutilla versicolor Fab. 



M. abdomine basi apiceque nigro medio rufo : fascia alba; puncto nigro. 



Habitat in America. Dom Drury. 



Caput cum antennis rufum. Thorax rufous, immaculatus. Abdo- 

 men basi nigrum, in medio rufum ; fii^icia alba ; puncto nigro. Apex 

 iterum niger. Pedes fusci. 



Iflutilla exiilaiis Fab. 



M. atra abdomine punctis duobus baseos striga interrupta lineolaque postica 

 flavis. 



Habitat in America. Dom Drury. 



Statura prsecedentis ; caput and thorax atra, immaculata. Punc- 

 tum utrinque flavum ad basin abdominis, striga interrupta in 

 medio aud postice linea dorsalis fere obsoleta e puncto parvo in 

 singulo segmento. 



IVIiitilla vagaiis Fab. 



M. rufa abdomine obscuriore segmentorum marginibus punctisque duobus 

 secundi segment! albis. 



Habitat in America boreali. Dom v. Rohr. 



Statura et magnitudo M. nigrlpes. Caput rufum antennis uigris 

 obscurum segmeutis omnibus margine albis sendundoque maiori 

 punctis duobus dorsalibus albis. Pedes rufi tibiis obsburioribus. 



