322 
INSECTAj HYMENOPTERA. 
describes and figures a species parasitic on Aranea inquilina, Clk., and dis- 
cusses its economy. 
Myzine. Instances of sexes being generically separated are recapitulated : 
M. cylindrical Pz., and Tiphia glabrata, F., are added as being sexes of the 
same species; tbe characters of the genus are discussed, and it is suggested 
that Myzine should be dropped and Flesia, Jur., adopted : Gerstacker, S. E. Z. 
xxxiii. p. 250. 
Piagetia, g. n., C. Ritsema, Ent. M. M. ix. p. 121. Allied to Larrada and 
Larraxena, Sm., but with 1st submarginal cell longer than 2 next together ; 
one ocellus, prothorax neck-shaped, petiolated cordate abdomen, and armed 
bind femora. P. woerdeni, sp. n., id. ibid, (and figs, d & e), Congo ; P. rit- 
semcs, sp. n., id. I. c. p. 122, figs, a, h, c, E. Java. 
Tachytes grandis, sp. n., Ohevrier, MT. schw. ent. Ges. iii. p. 508, Nyon. 
Pelopoeus targionii, sp. n., Caruccio, Bull. Ent, Ital. iv. pp. 273-275, Sar- 
dinia. 
Sphex haherhaueri, sp. n., Radoszkowsky, Hor. Ent, Ross. viii. p. 199, 
pi. vii. fig. 5, Astrabad, 
Pompilus natalensis, sp. n., Tachenberg, Z. ges. Naturw. xxxix. p. 13, 
Natal. 
Agenia domestica, sp. n., id. I. c. p. 16, Natal. 
Pepsis chrysoptei'a, p. 233, Tucuman, Catamarca, auriguttata, p. 234, Pa- 
rana, spp. nn., Burmeister, I. c. 
Myzine xanthocera, sp. n., Gerstacker, I c. p. 252, Zanzibar. 
DORYLID^. 
Gerstacker, S. E. Z. xxxiii, pp. 254-269, discusses at great length the afii- 
nities of Dorylus and Dichthadia, chiefly from the analogy afforded by the 
real or supposed relations of the former with Typhlopone and Anomma. His 
observations are of considerable physiological interest, but incapable of satis- 
factory abstraction. 
DicMhadia furcata, sp. n., id. I. c. p. 267, S. Africa. 
FORMICID^. 
GusTAV Mayr, SB. Ak. Wien, Ixi. (1870) pp. 370-417, pi., under the 
title Formicidce Novogranadenses,^^ describes 101 species from Now Granada 
(including 43 new, and 2 new genera), which he considers to be probably 
one half of the number existing in that district. Of those already known, 
some have been recorded from Mexico, the Antilles, Panama, Brazil, the 
Argentine Republic, and elsewhere in South America ; others occur from 
Mexico to Brazil ; and Pi^enolejns longicornis, Odontumachus h(ematodes, Tetra' 
moriimi guineense, and Solenopsis geminata are considered to be cosmopolitan. 
In addition to portions of various new species, the author figures parts of 
Catnponotus pellitus, Mayr, small worker, fig. 1, and Ilypoclinca ahriqHa, 
Smitli, fig. 9. The following observations occur: — Campotiotus atriceps^ Sm., 
and C. esuriens, Sm. (vulpinus, Mayr), are corroborated as one species, of 
which fidvaceus, Norton, ex typ., is a colour variety, and tceniatuSf Rog., is 
the $ ; C.JlexuSj Mayr,= crassws, small worker; Formica abrupta, Sm., is a 
Jlypoclinea, but erroneously referred by Roger to II. bidcnSf L. ; Prenolepii 
