42 ENTOMOLOGICAL SOCIETY 
parasite which had been bred from it. The specimens were sent 
to him by Prof. C. H. Fernald who received them from a corres- 
pondent in California. Mr. Howard concluded his communica- 
tion with a brief account of the literature of the Jumping gall. 
Mr. Howard also mentioned the fact that the well known 4i Die- 
back " fungus of the Orange had been described in MS. by Mr. 
Ellis as Nectria coccicola,* the describer having seen specimens 
under which were some of the common Mytilaspis scales of the 
Orange, and thereby forming the impression that the fungus was 
parasitic on the scales. 
Mr. Smith called attention to the fact that in the group of Bom- 
bycids classed as Attacince and Ceratocampince the antenna had 
in the cf two. pectinations to each joint, and proposed to limit the 
family Saturniidce bv this character. He explained the differ- 
ences between the proportions of the branches and their relative 
situations, and thinks the character a very important one in classi- 
fication. Two sub-families are well indicated by the fact that 
in the Attacince the pectinations extend to the tip of the antennae, 
while in the Ceratocampince they extend only two thirds the dis- 
tance and then end very abruptly. f 
Dr. Marx read a paper on the genus Thelyphonus, exhibiting 
at the same time a careful drawing of the North American Th. 
gigante2is. He stated that Th. excubitor Girard is simply 
the cT of giganteus, as the distinguishing characters of the two 
supposed species are precisely the same as found in the two sexes 
of Scorpions. Thelyphonus has 12 eyes, and not 8, as hitherto 
stated by all authors, since there are two distinct, though very small, 
accessory ocelli situated on each side near the externo-posterior 
slope of the ocellar tubercle. No poison glands could be detected 
on the mandible ; in fact the only means of defence appears to be 
a very strong and penetrating odor, but the position of the odor- 
iferous glands could not be ascertained from an examination of 
dried specimens. 
In commenting on this paper Mr. Pergande gave the following 
statement as to the habits of a specimen of Thelyphonus sent to 
Dr. Riley, and kept alive for some time in a glass jar at the rooms 
of the Entomological Division : 
* Since published in Journal of Mycology, ii, No. 4 (1886), p. 39. 
t See Proc. U. S. Nat. Mus., 1886, pp. 414-437. 
