210 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



thau to the first ; third obsolete at the immediate base, curving somewhat strongly 

 outward as it approaches the origin of the first fork ; second fork rather nearer to the 

 apex of the wing than to the third vein, but difi'erence slight; fourth vein very 

 sharply curved throughout, so that its middle portion approaches much nearer the 

 first fork than its ends. Antenuje longer than the body, slender; third joint longest ; 

 fourth a little shorter than the third ; fifth a little shorter than the fourth ; sixth 

 about half the length of the fifth or less ; seventh, in the only complete antennie 

 obtained, about as long as the fifth. 



" Od most of the specimens I was unable to observe any honey-tubes ; 

 but in one specimen found on the same leaves, and which appears to 

 belong to this species, these were apparent but very short, their length 

 scarcely exceeding their diameter. This specimen was of the same 

 delicate yellowish color, but the wings were perfectly pellucid. It is 

 impossible to decide in reference to the honey-tubes from the mounted 

 specimens, which are imperfect. On one of these specimens I found a 

 species of mite fastened to the metathorax or base of the abdomen, so 

 as not to interfere with the flight of the Aphis. It is probably a species 

 of Trombidnim, but as it is evidently in its larval state it is difficult to 

 assign it to its proper position. It is probably the young of Dr. 

 Packard's T. bulbipes, but it diflers from that species in not having the 

 tarsi enlarged. It also has the tarsi furnished with two strongly 

 curved claws. It is possible that this is Dr. Fitch's Lachnus quercifoUce^ 

 but it is impossible to identify the two from his very brief description. 

 It approaches very nearly to Aphis quercus Kalt., which Koch has 

 placed in Callipterus, and I would have identified it with that species 

 but for the clouded wings. It will fall in Myzocallis as I have given 

 the characters of that genus, and is probably a variety of the species 

 under which I place it." (Thomas.) 



296. CaUipterns discolor Mouell. 



Prof. Riley found, November 12, 1884, at Washington, D. C, on the 

 lower side of leaves of Q.prinus, numerous specimens of the apterous 

 oviparous females, larv?e, and the winged males of the above species. 



The male is of a more or less dark rose color, though the fourth, fifth and last 

 abdomiual segments are yellowish, with a roseate tinge at sides. Head black. Ocelli 

 clear, colorless. Eyes red. Antennal joints 3 and 4 whitish with blackish tips, the 

 others black. Thorax black. There ai'e two roseate stripes on prothorax and the 

 sides of the mesothorax at insertion of the wings are dusky. There are two dorsal 

 rows of black spots on the abdomen, of which the pair in front of the nectaries is con- • 

 fluent. A row of large, black, roundish, lateral spots and some smaller ones of differ- 

 ent sizes between these and the dorsal rows. There is also a narrow, transverse band 

 on the eighth segment. Nectaries short, black. Claspers blackish. Legs colorless, 

 the tarsi pale dusky. Sternum black. On the venter are some large, transverse, and 

 some smaller black spots. (Unpublished notes.) 



297. Callipterus punctatus Monell. 



Professor Kiley found. May 19, 1883, at Washington, D. C, numerous 

 specimens on the lower side of leaves of Q. prinus of an Aphid which 



