MR. R. M'LACHLAN ON" NEW SPECIES ETC, OF NEUEOPTEBA, 231 



of several hundred species lias been a work of mueli labour; and I 

 can scarcely bope that I have escaped errors of commission as well 

 as of omission. I commenced witb the intention of revising the 

 whole of part ii. of the Catalogue, but decided upon stopping at 

 the end of the genus Myrmeleon. I hope hereafter to write con- 

 cerning the AscalaphidcB, and reserve that part of the list for the ac- 

 quirement of fuller information ; the PanorpidcG were relinquished 

 on account of the dijBBculties found in separating the North 

 American forms. The evils arising from the retention of large 

 numbers of specific forms under one generic head are exhibited in 

 the Neuroptera in an intensified degree. The Myrmeleonidce, for . 

 instance, stand greatly in need of more minute division ; and the 

 rich genus Chrysopa is made of several more or less well-marked 

 groups, — a wide field for the researches of a monographer. 



I have before said that an exhaustive work is not here attempted ; 

 and if my notes shall smooth the path for future students, their 

 purpose will have been served. 



SIALIDtE. 



G-enus Chattliodes, Latreille. 



Chauliodes pusiLLus, n. sp. Lurido-brunneus. (Antennae mutilatfe). 

 Caput subtriangulare, kirido-brunneum ; ocellis flavis ; oculis nigris ; 

 labro magno, antice rotundato. Prothorax duplo longior quam latior, 

 capite angustior, lateribus fere parallelis. Alse fere sequales, obtusae, 

 breves, pallide griseo-brunnese, immaculatse; venis venulisque brunneis. 

 Pedes brunnei. Abdomen saturate fuscum ; appendicibus flavis, su- 

 perioribus fortiter deorsum incurvatis, parallelis, inferioribus parvis, 

 subdilatatis {<S)- Long. corp. &\"' ; exp. alar. 1" 6'". 



Hob. in India orientali?? In collect, auct. 



AntenncB (broken) with the two basal joints brownish testaceous. Head 

 elongate subtriangular ; the crown with a median longitudinal im- 

 pressed line ; lurid brown, with some yellowish impressed spaces on 

 the sides posteriorly ; labrum large, broader than the clypeus, strongly 

 rounded in front. Eyes black. Ocelli yellow. Prothorax much 

 narrower than the head, twice as long as broad, the sides almost 

 parallel ; lurid brown. Meso- and metathorax lurid brown. Wings 

 nearly equal, the posterior only slightly smaller than the anterior ; 

 broad, obtuse ; pale greyish brown ; unspotted, or with an appear- 

 ance of three small darker spots between the first and second sector ; 

 veins and veinlets dark brown ; the anterior wings with about seventeen 

 transverse veins in the costal area, which become closer and oblique 

 towards the apex ; transverse discal veins very few. Legs lurid brown, 

 the tarsi more obscure. -Abdomen dark fuscous, almost black beneath ; 



19* 



