104 Journal New York Ent. Soc. [Vol. ii. 



in size. Sometimes two or more galls occur in close proximity to 

 each other on the same stem. From these 40 galls, which were 

 placed in a glass jar Nov. 14, 1892, nothing had issued up to March 

 24, 1893. On April 4, 1893, from 13 galls that had been laid aside, 

 six sawflies were found issued and dead, except one which was 

 alive. Three more were found issued and dead from same galls, 

 April 9, 1893. From the other 27 galls there were found issued 

 April 9, 1893, 4 live sawflies and 12 dead ones. 



The following are descriptions of the occupants of this gall. 

 Larva of Euura orbitalis Nort. —Length, 5 to 8J^ mm.; width, i 3/5 to 2 

 mm. Entirely pure white, except head which is pale brownish with a blackish 

 shade. Head very round in outline from before, with a darker circular central 

 area. Eyes darker, situated on outer anterior edge of head, consisting of a single 

 large round raised ocellus. Antennae apparently consisting of a single flattened 

 basal joint, which is partially sunken in a shallow cavity in front of the eye. 

 Mandibles strong, widened on base, a little narrowed and rather truncate on apex, 

 3-toothed blackish on apex. Maxilloe 3-jointed, basal two joints very stout, first 

 longer and a little stouter than second, third joint very slender and about as long as 

 second. Maxillary palpi 3-jointed, joints about equal, the apical joint a little 

 smaller than the basal. Labial palpi 3-jointed, joints about equal in length, basal 

 stout, second about one-half width of basal, terminal joint very slender. Head 

 chitinous and thinly hairy, rest of larva fleshy and naked. Three pairs of well for- 

 med thoracic legs, apparently 4-jointed. Abdominal segments 5 to 10 each on 

 ventral surface with a pair of short leg like prolongations of the integument. Seg- 

 ments very nearly equal in length. Body widest on last two thoracic segments, 

 the prolhoracic segment narrower, and head narrower still. The abdominal seg- 

 ments somewhat narrower than the last two thoracic, about equal except 12 and 13 

 which are successively narrowed. 



Described from 3 specimens, extracted from galls Nov. 14. 

 The above mentioned specimen of the pupa is unfit for description. 



Larva of Eurytoma studiosa Say.— Length, i 4/5 to 3 mm.; greatest 

 width I 1/5 to I '2 mm. Wholly pure white, except the very small brownish mouth 

 parts. Oval in shape, thick, plump, and fleshly, apodous, consisting of 13 segments 

 but appearing 14-jointed from an extra joint showing at anus. Segments nearly all 

 equal in length, the body widest on segments 7 and 8, very gradually narrowing and 

 rounded anteriorly, more rapidly narrowing to a tip posteriorly. Head situated on 

 ventral aspect, the whole capital segment invisible from above in the natural 

 slightly curved position of the larva. Mouth parts, so far as apparent, consisting 

 simply of a whitish labrum and two small brownish chitinous jaws, the latter rather 

 stout and lighter colored at base, pointed and sharp at apex and notched on outer 

 side near base. Head plate or segment narrowed, very thinly hairy. Larva ante- 

 riorly with a few hairs, rest apparently naked. 



Described from 9 specimens, taken from galls, Nov. 14 

 I am indebted to Mr. Wm. H. Ashmead for identifiying the 

 host and parasite. 



