110 Journal New York Entomological Society. [Voi. xx. 



prominent oral margin, the vibrissa inserted a little above same. 

 There appeared to be no uterus, and about thirty eggs were found in 

 the ovarioles. The egg is flattened-subovate macrotype, whitish, 

 probably without either reticulation or operculum. 



Type, TD427 (fly and slide of eggs). 



This is type of the genus and also of the group-unit Neothelairina. 



Spathidexia clemonsi, new genus and new species. 



TD371 — Ann. E. S. Am., Vol. IV, p. 140. 



One female, Melrose Highlands, Mass., Aug. 17, 1908, collected by 

 Mr. D. H. demons, for whom it is named. This specimen has been 

 determined by Mr. W. R. Thompson as ThcJairodcs cincreicollis 

 V. d. W. It can not be that species, though it is probably the species 

 so determined by Coquillett. So far as the description by B. & v. B. 

 of Thclairodcs goes, which is of the male only, it can not be positively 

 referred to that genus. The female has a curved, blade-like larvi- 

 positor. The uterus contained about no eggs and maggots. The 

 maggot is white, subcylindrical, quite elongate and only moderately 

 stout, the cephalic end somewhat tapered, the anal end rounded and 

 tipped with a circular patch of very small, short, stout spines. More 

 or less complete circlets of smaller spines occur on the forward edge 

 of each body segment except first and third, those of segments two 

 and four being widened and band-like, those of five half as wide, the 

 others still narrower. The cephalopharyngeal skeleton is stout but 

 shortened, the upper wing of the pharyngeal sclerite being atrophied 

 into a sharp curved spur, its lower wing and infrapharyngeal sclerite 

 represented only by a small, short terminal spine, but the anterior or 

 arm portion of the pharyngeal sclerite is widened. Hypostomal 

 sclerite moderately short and stout, infrahypostomal curved-linear in 

 profile. Mandibular sclerite much widened and dilated, showing in 

 profile a shortened-subovate outline. 



Type, TD371 (fly and slide of eggs and maggots). 



This is. type of both genus and tribe Spathidexiini. 



Oxynops serratus, new genus and new species. 



One female of this form was taken by Mrs. Townsend on herbage 

 along Biscayne Bay front at Miami, Fla., Nov. 30, 1908. It is a small 

 blackish form of Compsilurine habitus, and my notes mention it as 

 having a long tail-like larvipositor and perhaps a piercing structure. 



