452 
ZOOLOGICAL LlTEllATUllE. 
TERMITIDiE. 
M‘Lachlan notices the occurrence of a small species of this family in St. 
Helena, brought from that island by Mr. Melliss. He was inclined to refer 
it to Termes tenuiSf Hag., a native of the West Indies and Brazil, and 
thought it had been introduced into St. Helena from tropical America. 
(Trans. Ent. Soc. Lond. 1869, Proc. p. xiii.) 
PsOCIDiE. 
Packard (Guide, p. 689) figures an insect under the name qf Atropos 
pulsatorius. This is evidently, from its rudimentary wings, the insect now 
known as Clotkilla pulmtoria^ which is distinct from the abundant spe- 
cies, the true Atropos, formerly regarded as A. pulsatoria of Linn<5. 
In Harris’s ^ Correspondence,’ edited by Scudder, are printed (pp. 828- 
333) descriptions of various species of Psocus from Harris’s original MSS. Of 
these, P. lucidus, Harris, /. c. p. 328, from Cambridge, Massachusetts, is not 
recognized as a described form. P. gregarius, Harris, 1. c. p. 329, = venosus, 
Burm. ; P. frontalis, 1. c. p. 330, =striatus. Walker; P. nuhilus, Harris, 1. c. 
p. 331, =lugens, Hagen ; P. 4:-fasciatus, Harris, ibid., not recognized; P. pusillus, 
Harris, ibid., from Cambridge, not recognized; P. infuscatus, Harris, l.c. 
ig,332,=sparsus, Hagen; P. gracilis, Harris, \\A3..,=^signatus, Hagen. 
CcecUius atricornis, sp. n., M^Lach. Entomol. Montlily Mag. v. p. 196, Isle 
of Wight. 
PERLIDiE. 
Capnia pygmcsa, Burm. Bethune (Canadian Entomologist, i. p. 81) 
alludes to the occurrence every spring of swarms of a small Perlide, which he 
refers to this species, on the liver Credit, in Canada. They are frequently 
found on the surface of the snow. 
Dictyopteryx infumata, sp. n., M‘Lach. Ann. Soc. Ent. Belg. xii. p. 101, 
Mingrelia. 
Stenoperla annulata, sp. n., Brauer, Verhandl. zool.-bot. Gesell. Wien, xix. 
p. 17, Chili. 
Ephemerid^e. 
Eaton (Entomol. Monthly Mag. v. p. 131) states that the family seems 
separable into three principal groups of genera (1) those with fossorial 
nymphs, with the mandibles produced externally into a porrect spine ; (2) 
those with nymphs which crawl above the river-bed, and whose females, 
when adult, have a ventral lamina slightly produced out of the apex of the 
penultimate segment ; (3) those whose nymphs can run nimbly about water- 
plants, and swim rapidly. 
Packard (Guide, pp. 595,'596) figures the pupa of Bcctisca and the imago 
of Potamanthus marginatus and Lachlania abno?-mis. 
Palingenia heciLba, Hag. M‘Lachlan records this gigantic species from 
Veragua (Trans. Ent. Soc. Lond. 1869, Proc. p. viii). 
In a letter from Harris to Herrick, dated 1843, printed in the Harris 
^ Correspondence,’ pp. 193, 194, the former calls attention to the moulting of 
Ephemeridce, and asks if there be any analogy between the double meta- 
