CLASSIFICATION. 65 



ventral legs ; the second division will include the 

 Lydina, distinguished, iittrr <t!i<>, by the larvae wanting 

 abdominal legs. The first section I would arrange 

 in two series. On the one hand, Tenihredina and 

 Nematina a homogeneous section, on the other Ciiiilx'- 

 ciiidy Hylotomina, and Lophyrina, three sharply cut off 

 groups, but having more connecting links between 

 themselves than with either T>'nf//rr.Jntn or Nemati,/". 

 This arrangement may be tabulated as follows : 



I. Larvae with ventral legs. Prothorax emarginate behind. Middle 



lobe of mesonotum much longer than broad, not separated 

 from scutellum by a deep fovea. Basal nervure not received 

 in first cubital cellule. 



A. Fore lobes of metanotum well developed, so that the cenchri 



are separated from the scutellum by a comparatively wide 

 space. 



1. Larvae with twenty-two legs. Fore wings with two 



radial cellules. Second and third cubital cellules 

 receiving each a recurrent nervure. Lanceolate 

 cellule rarely petiolate. Antennae usually 9-jointed, 

 rarely 7 15. Tenihredina. 



2. Larvae with twenty legs. Fore wings with one, rarely 



with two radial cellules. Second (or first when there 

 are only three) receiving both recurrent nervures. 

 Lanceolate cellule petiolate, rarely constricted. An- 

 tennae 9-jointed. Nematina. 



B. Fore lobes of metathorax not well developed, cenchri almost 



touching scutellum. 



1. Antennae clavate. Sides of abdomen acute. Larvae 



with twenty-two legs, ejecting an acid liquid from 

 lateral pores. Cimbicina. 



2. Antennae 3-jointed. Fore wings with one radial cellule, 



usually appendiculate. Tibiae spined. Larvae with 

 eighteen to twenty legs. Hylotomina. 



3. Antennae multiarticnlate, serrate in ? , flabellate in d" . 



Larvae with twenty- two legs. Lopliyrina* 



II. Larvae without ventral legs. Basal nervure received in the first 



cubital cellule. Middle lobe of mesonotum not much longer 

 than broad, and separated from the scutellum by a deep 

 fovea. Pronotum subtruncate at its hind margin. Tibiae 

 spined. 



Antennae setaceous, multiarticulate. Abdomen depressed. Tere- 

 bra not exserted. Lydina. 



Antennae 12-jointed, the third very much larger than any of the 

 others. Terebra exserted. Pinicolina. 



* Blasticotoma, Kl. (not a British insect), will form another division 

 of this section, distinguished by its exserted ovipositor, 4-jointed 

 antennae, of which the third is the largest, and by the basal nerve being 

 received in the first cubital cellule. 



VOL. I. 5 



