M'Lachlan. — On Neio Zealand Neuro'ptera. xcv 



Very closely allied to T. zealandica, but considerably larger ; on the 

 abdomen the basal spot at the base of segment 1 is divided; tbe superior 

 appendages are much exserted, scarcely one half shorter than the inferioi', 

 subtriangular, the lower edge concave, hence the tips are much curved down- 

 ward (the black tubercle is present as in T. zealandica). There are four 

 cellules between the quadrilateral and the nodus in all the wings, and the 

 pterostigma is larger and surmounts fully two cellules ; fifteen postcubital 

 nervules in the anterior wings. 



Notwithstanding the great similarity I must, for the present, consider this 

 insect specifically distinct from T. zealandica. Only one male has been 

 examined, and that rather immature, the red markings on the head and thorax 

 not being fully developed and more or less yellowish, and the pterostigma 

 dusky yellow. 



PLANIPENNIA. 



Sialidse. 

 Genus Chauliodes, Latreille. 



18. Chauliodes diversus, Walker. 



Hermes diversus, Walk. Brit. Miis. Cat. Neuropt. pt. ii. p. 20.5. H. duhitatus. Walk. 

 op. cit. p. 204* (c/. M'Lachlan, Arm. & Mag. Nat. Hist. July 1869, pp. 37 & 39). 



This insect varies much in size. Of five individuals in my collection the 



smallest (male) has an expanse of wings of only 25'", the lai-gest (female) 



expands to 41'". The structui'e of the antennae is the same in both sexes. 



MyrmeleontidsB. 

 Genus Mtrmeleon, Linn6, Hagen. 



19. Myrmeleon acmtus, Walker. 



Myrmeleon acutus, Walk. Brit. Mus. Cat. Neuropt. pt. ii. p. 377.* 



Appears to be the sole representative in New Zealand of this extensive 

 family. The hind wings of the male possess a '■'■ pelote " or knob at the 

 extreme base of the inne ■ margin, as in many other sjDecies. 



Osraylidse. 

 Genus Stexosmtlus, M'Lachlan. 

 The New Zealand species might be transferred to a new genus on account 

 of the subfalcate wings and excised apical margin ; but the Australian 

 S. pallidus is in some respects intermediate between them and the typical 

 species ; hence their retention in this genus will answer every purpose, at any 

 rate for the present. 



20. Stenosmylus incisus, M'Lachlan. 



Osmylus incisiis, M'LacU., Joum. of Entoni. vol. ii. p. 112, pi. vi. tig. 1* (c/. M'Lachl., 

 Entom. Monthly Mag. vol. vi. p. 195). 



