﻿I05 



v^fhi'ch is cinereous in some parts; the extreme tip of the abdo- 

 men testaceous; metathorax more or less obscurely pale in some 

 parts, at least along some of the sutures. Antennae blackish, 

 third and fourth join't short, subtriangular, with one of the 

 apical angles produced uito a long branch, fifth and sixth joints 

 shorter than the preceding, more ring-like, but produced into 

 similar branches; seventh joint lamellate throughout. Wings 

 subhyaline, slightly smoky and iridescent, the nervures very- 

 distinct, blackish. Expanse 3 mm. 



(Plate I, fig. 2 and 7; PI. II, fig. 2). 



Hab. Mittagong, New South Wales, bred from a common 

 Bythoscopine Jassid, Agallia or an allied genus, found on Mela- 

 leuca (Koebele 2356). I have named this after Mr. E. A. 

 Schwartz, who was interested in the Stylopids discovered in Ohio 

 by Mr. Koebele, and has often placed his knowledge at Mr. 

 Koebele's service. 



5. Halictopliagus ( ?) ajiicricaii'iis, sp. nov. 



Female. Dark brown or piceous, suboblong, the anterior 

 median area dis'tinct in apical view, but generally hardly visible 

 in surface view, owing to its position on the apex of the head, 

 which is bent at an angle to the outer surface; tuberculate on 

 either side of this area; the whole disc of the head deeply im- 

 pressed so as to form a great cavity leading into the opening 

 of the brood-chamber. Length about J mm. 



It is, I should think, almost impossible that this female can 

 be congeneric with those I have assigned to the subgenus 

 Brucsia. It would not be surprising to find that this is really 

 the female of Halictophagiis proper, though we have no proof 

 that such is the case. As the parasite is so common in Ohio on 

 the Jassid Agallia 4-notata it is to be hoped that the entomo- 

 logists of that state will quickly decide his question. 



(Plate III, fig. 6). 



Hab. Columbus, Ohio; taken abundantly by Mr. Koebele, 

 (No. 2191). 



Megalechthrus, gen nov. 



Female. Head ovate, moderately elongate, the opening of 

 the brood-chamber near the middle or rather in front of it, the 

 small anterior median area distinct, a little produced in front, 

 and tuberculate on either side of this area in front. This large 

 form appears to be allied to Brucsia and Halicfophagiis, but is 



