100 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



long and stout, the tibiae being about one-fifth longer than the tarsi. The anal ring 

 seems to bear six long hairs. 



The egg. — Long oval iu shape, .4™™ in length, yellowish in color. 



Newly hatched larvw. — There is nothing very characteristic about the young larvae; 



they are flat and their antennae are only 6-jointed. (Comstock's Report for 1880, 



p. 336.) 



49. The oak Chermes. 



Chermes sp. 



(Plate XXVIII, Fig. 1.) 



The following characterization of this genus is taken from Signoret : 



Body perfectly globular or with a slight incision for insertion on the twig or branch. 

 On an external examination no trace of an ten me, legs, or even mouth parts is to be 

 observed, and the insect presents precisely the appearance of a gall. 



Iu the larvae, however, the true characters of the Coccina) are seen — multiarticu- 

 late lower lip and the absence of the aual plates. The larval characters are the ones 

 which have been principally used iu the description of species, as they are easy to 

 find. They (the larvae) are long, oval, the abdomen plainly segmented and deeply 

 cleft at the extremity, except iu C. vermilio and C. ballotce. Upon each segment 

 there are several spiues at the lateral edge and several hairs upon each disk. The 

 lateral lobes have each a bundle of spines and a very long hair. Antenuse H-jointed, 

 joint 3 longest. With all the legs the tibiae are shorter than the tarsi. With the 

 adult the antennae and legs appear natural ; but in very old individuals, which have 

 secreted the horny covering, the antennae are still present, but deformed ; so also 

 with the legs, but the latter are sometimes entirely wanting. 



The males resemble those of other Cocciuje, and are inclosed in a little white felt- 

 like sac. Head globular, with four eyes and six ocelli in C. bauhinii (the only species 

 observed by Signoret). The antennae are very long, joint 3 longest, joint 10 shortest, 

 and carrying several hairs with buttoned tips. Wings loug. Abdomen long, with a 

 short genital armature and two long bristles each side. Legs long, the tibiae longer 

 than the tarsi, the latter with a long claw and the four ordinary digitulea. 



There are in the collection of the Department several species belong- 

 ing to this genus, which we have collected in Florida, Alabama, Lou- 

 isiana, California, New York, and District of Columbia. For want of 

 time T am unable to characterize these now. The species represented 

 on Plate xxviii, fig. 1, occurs on Quercus iu California. The only 

 North American species which has been described is Kermes galliformis 

 Riley, described in the American Naturalist, vol. xv, p. 482 (June, 

 1881). (Comstock, U. S. Agricultural Report, 1880, 337.) 



50. Chermes galliformis Riley. 



"Received from H. H. Rusby, Silver City, N. Mex., the almost glob- 

 ular scales of a coccid from the same oak as the preceding {Quercus 

 emoryi). They are shining, very indirectly sculptured, white, beauti- 

 fully variegated with yellowish-gray and black. The white ground color 

 is especially noticeable in longitudinal stripes. These scales occur either 

 singly or in clusters — the largest containing about eight — around the 

 twig. They contained nothing but eggshells when received. 



These scales were infested with the larva of a Lepidopteron appar- 

 ently belonging to Dalcruma, which issued in April, 1881." (Riley's 

 unpublished notes.) 



