742 LIST OF DIPTERA. 



New Zealand. 



A. Mystax niger. ------ varius, White. 



B. Mystax niger, albo varius. - - - Bulbus, Walk. 



C. Mystax albus. ------ Lascus, Walk. 



Group I. 



Corpus vix mediocre. Caput subtus dense pilosum. Facies 

 convexa. Mystax dense setosus. Proboscis sublinearis. Anten- 

 naruin articulus lus 2o duplo lougior ; 3us lanceolatus lo aequalis ; 

 arista 3o paullo lougior. Thorax hirtus ; latera setosa. Abdomen 

 thorace plus duplo longius, alas vix superans. Pedes validi, spinosi, 

 parce hirti. Alas. — Abdomen sublineare. Sexualia mediocria tu- 

 mida. Fcem. — Abdomen oblanceolatuni, triente apicali compressa 

 laevi nitida. 



Cubital vein forked at rather before two-thirds of its length ; 

 forks very slightly curved, diverging from each other. First 

 externo-medial curved near its base; second nearly straight; third 

 slightly curved, forming an obtuse angle with the praebrachial, 

 joining the fourth far from the border. Subanal joining the anal at 

 some distance from the border. 



Asilus varius, White. 



Group 2. 



Corpus gracile, fere nudum. Caput subtus parce pilosum. 

 Facies plana. Myslax minimus, setis paucissimis. Proboscis 

 gracilis, sublanceolata. Autennarum articulus lus 2o plus duplo 

 longior; 3us lanceolatus, lo paullo longior; arista 3o multo brevior. 

 Thoracis et abdominis latera parce setosa. Thorax brevis. Abdo- 

 men thorace plus duplo longius, alas non superans. Pedes graciles, 

 parum setosi, fere nudi. Alae longiusculae. Mas. — Abdomen sub- 

 lineare. Sexualia minima. Fcem. — Abdomen sublanceolatum, 

 apice compresso laevi uitido. 



Cubital vein forked at rather beyond half its length ; forks 

 nearly straight, slightly diverging. First, second and third externo- 

 medial veins nearly straight ; third forming an obtuse augle with 

 the prabrachial, joining the fourth far from the border. Subanal 

 joiuing the anal at some distance from the border. 



Asilus Lascus, Walk. 



275. Asilus varius. 



Asilus varius, Cat. of Diplera, Pt. 2, 467. 



«, b. New Zealand. Presented by Dr. Sinclair. 



c. Auckland, New Zealand. Presented by Col. Bolton. 



