482 
ZOOLOGICAL LITERATURE. 
Marshall indicates (Ent. M. Mag. iii. p. 269) the characters of Belphax 
hivittatus (Boh.) and D. thoracicus (StSl) as additional British species, and 
describes the $ of D. elegantulus (Boh.). 
CiCADELLINA. 
Eupteryx. Marshall (Ent. M. Mag. iii. ll. c.) publishes descriptions of 
the British species of this genuS; of which he recognizes 28. None of them 
are new. 
Marshall also states (/. c. pp. 269-270) that his Jassus A.-vittatus is only a 
var. of J. socialis (Flor.), and records the occurrence in Britain of Jassus ven- 
tralis (Fall.) and J. hrevipennis (Kirschb.). 
DorycephaluSy g. n., J. Kuschakewitsch, Horae Soc. Ent. Boss. iv. p. 102. 
Body elongate, fusiform j head produced, vertex horizontal, forehead longi- 
tudinally excavated, clypeus oblong-quadrate, lora very broad, oval ; ocelli 
very minute j hemelytra short, veins parallel, cells 0 j legs subangulate, 
spinulose. Sp. D. baet if sp.n., J. Kusch. /. c. p. 103, pi. 2. fig. 6, Orenburg. 
Aphidid^e. 
SiGNORET & Balbiani liavc detected a singular instance of 
dimorphism- in the young of Aphis aceris (Fab.). The larvae of 
this species present two distinct forms : — a normal pubescent 
form; and a somewhat foliaceous form, having the head and abdo- 
men furnished with curious veined leaflets on their margins, and 
the abdomen reticulated in a manner resembling the design of the 
plates on the back of a Tortoise. This form was described by 
Thornton as a microscopic object under the name of the leaf- 
insect^^ or Phyllophorus testudinatusj and by Lane Clark as 
Chelymorpha phyllophor a 'y Vander Hoeven substituted for these 
the name of Feriphyllus testudo, both the other generic names 
having been previously employed. Signoret adopts the name 
of Feriphyllus testudinatus. Some of the normal embryos pre- 
sent a few flattened scale-like hairs. The function of the foli- 
aceous larvae in the economy of the insect has not been detected. 
They contain no embryos. (See Signoret, Ann. Soc. Ent. Fr. 
4® ser. vii. pp. 371-378, pi. 10. figs. A 1-4, Feriphyllus testu- 
dinatuSy and figs. B 1 & 2 the normal larva ; also Balbiani & 
Signoret, ^ Comptes Bendus,^ Ixiv. pp. 1 259-1 2G3). 
SiiiMiCR (Proc. Acad. Nat. Sci. riiil. 1867, p. 2) proposes the formation 
of a distinct family, Dactylosphceridccy intermediate between the Aphides 
and the Coccidflo, for some small species of which he forms a now genus, 
JDactylosphcei'a. The characters given for the family are as follows : — 
Wings 4, carried flat on the back in repose. Antennae few-jointed. Tarsi 
composed of one joint, terminated by 2 claws, and from 2 to 6 diyituli. Ho- 
ney-tubes none; otherwise resembling Aphides The term diyituli’^ is 
employed by the author for some singular organs consisting of a stalk with a 
round head which project from various parts of the extremity of the tarsus. 
Phylloxera (Fonsc.). Signoret (Ann. Soc. Ent. &c. 4« s^r. vii. pp. 297-304) 
describes the general characters and habits of the insects of this genus, espe- 
cially noticing the production by them of a sort of pellicle or shell, serving, as 
he thinks, for the protection of the ova. He indicates and describes 4 spe- 
