^28 Transactions. — Zoology. 



wings with 15 post-nodal uervules. Length, 39 mm. ; of ab- 

 domen, 31 mm. ; of hind wing, 22 mm. ; expanse, 56 mm. 



Locality. — New Zealand and Chatham Islands. 



In Chatham Island specimens the basal black spot on 

 the first abdominal segment is not divided, and there are 15 to 

 18 post-nodal nervules. 



Group PLANIPENNIA. 



The Planipennia, or Neuroptera vera, are distinguished by 

 the larva being carnivorous, and very unlike the imago ; 

 while the pupa is quiescent and the wings are developed in- 

 ternally. The antennae are long, the mouth is mandibulate, 

 the wings are naked, and the hind wings are never folded. 

 The tarsi are 5-jointed. 



Artificial Key to the Families. 



Nervures of the wing not very numerous . . . . ScialidcB. 

 Nervures of the wing very numerous. 



Antennte setaceous or moniliform . . . . Hemerobiidcs. 



Antennse short, clavate. . .. .. .. Myrmeleontidcs. 



Family SCIALID^. 



Large insects, with the body short and thick, the prothorax 

 large and square. Antennae long and setaceous. Ocelli con- 

 spicuous. Wings moderate, reticiilated, the hinder pair rather 

 smaller and with the anal space small, not plicated. The 

 larvae are aquatic. When full fed they leave the water, and 

 make cells in the bank, in whicla the inactive pupae undergo 

 their transformation. They are generally known as alder- 

 flies. 



Genus Chauliodes, Latreille (1805). 



Prothorax as large as the head. Three ocelli close together. 

 Antennae pectinated or serrated. Neuration moderate, the 

 nervules slender. Joints of the tarsi cylindrical. Caudal ap- 

 pendages of the male conical and simple. 



Distribution. — Asia, Africa, America, Australia. 



Chauliodes diversus. 



Hermes diversus, Walker, Cat. Neuroptera in Brit. Mus., 

 p. 205 (1852). B. dubitatus. Walker, I.e., p. 204. Chaii- 

 liodes diversus, McLachlan, Ann. Mag. Nat. Hist., ser. 4, 

 vol. 4, pp. 37 and 39; Hudson, Man. Ent. of N.Z., 

 p. 102, pi. 14, figs. 1-1&. 



Ferruginous. Head much broader than the thorax, striped, 

 testaceous in front, contracted hindward ; antennae piceous ; 

 prothorax with a slight longitudinal furrow, its length a little 

 exceeding its breadth ; abdomen piceous ; wings long and 



