62 ENTOMOLOGICAL SOCIETY 
DECEMBER 2, 1886. 
Six persons present. President Howard in the chair. 
Mr. J. D. Sherman, Jr., of Peekskill, N. Y., was elected a 
member of the Society. 
Dr. Riley made some remarks on the larvae and larviform 
females of Phengodes and Zarhipis, of which he furnished the 
following abstract : 
NOTES ON PHENGODES AND ZARHIPIS. 
I read with some interest, while in Europe last July, the account in Science 
for July Qth of Dr. Horn's remarks on the larviform female of Ph. laticollis 
and Zarhipis Riversii. I have been familiar, since 1869, with the lumi- 
nous larva which was then, following Osten Sacken, referred with a ques- 
tion to Melanactes. I exhibit alcoholic specimens of the form found by 
myself and others in Missouri, and which was first figured by me in 
LeBaron's 4th Rep. Ins. of Ills. (1874); of another series corresponding 
with Zarhipis received in 1883 and 1884, from Mrs. A. E. Bush, of San 
Jose, Cal. ; one received from Henry T. Thomas in 1869, of Franklin, Mo. ; 
one {Phengodes} received from Mr. J. W. A. Wright, Greensborough, Ala., 
June, 1886; two (apparently Phengodes} received in 1875 from Mr. B. P. 
Mann, Cambridge, Mass. ; others received from L. R. Alexander, Piocha, 
Nev., in September, 1883; and, finally, one {Phengodes} from Mr. O. 
Lugger, found near Baltimore, Md., in 1876. 
The structure in all these larvae is essentially identical, but they are 
divisible into three groups doubtless corresponding to as many genera. 
In the first group {Phengodes} the most common form is pale or yellowish 
in general color, with a medio-dorsal series of small, paler, double spots 
near the hind margin of each joint ; the mandibles sharp and sickle-shaped 
and the prothoracic joint elongate and narrowed anteriorly. Another 
colorational form in this group the one originally described by Osten 
Sacken has the horny parts much darker, almost black, with a series of 
pale brown or fulvous dorsal spots, two to each joint. In the second group 
{Zarhipis} the color is equally variable, some of the specimens being pale 
brown and showing the small, geminate, medio-dorsal paler spots at base 
of each joint, but most of them being much darker, almost black dorsally 
with no lighter markings. The surface is rather more noticeably shagreened 
and the medio-dorsal depressed line more marked in this group than in 
the first, from which it is at once distinguished by the broader, more trans- 
verse head ; but particularly by the broader, more transverse prothoracid 
joint, not narrowed anteriorly. With these exceptions the structure in 
these two groups is essentially the same. In both, the larvae possess a 
large ocellus at base of antennas, and in both they exhibit a remarkable 
peculiarity hitherto not noticed, viz., a pair of small spiracular or spiracle- 
