166 THE ENTOMOLOGIST S RECORD. 
M. (Holecomyrmex) dentigerwn, Rog. 8, 2 Baghdad, 1918 
(Evans). ; 
M. (H.) evansi, Donisthorpe (Hnt. Rec., xxx. 10, p. 165, 1918) 
dé, 2%, %. Tigris and Amara, 1918 (Buxton) ; Amara, 1918 (Evans). 
Many of the ¢ g and 2 2 were taken tn cop. 
All of the numerous 8 % I have received from both Mr, Buxton 
and Lieut. Evans, as well as those received by Mr. Donisthorpe, are of 
uniform size. The ¥ ¥% of the sub-genus Holcomyrmex, as defined by 
Hmery (Bull. Soc. Ent. F’r., p. 189, 1915), are ‘‘ very dimorphic.” It 
is extremely unlikely that no % major should have been captured 
among the large series that has been examined, if a % major actually 
existed ; therefore it appears likely that this new member of the sub- 
genus is an exception to the general rule. 
%. The head is slightly broader than long (without the mandibles), widest 
at eyes, slightly broader in front than behind, sides feebly convex. Occipital 
border slightly concave ; in centre of occiput is a distinct impressed longitudinal 
line ; a feeble impression also on vertex. The scapes do not reach the occipital 
border by a little more than their width. Anterior border of clypeus strongly 
concave between the teeth. 
: ae few striz on cheeks; the semi-circular striation in antennal socket very 
eeble. 
Thorax strongly constricted at meso-epinotal suture; tbe latter in profile 
deeply impressed. Arch of epinotum regularly curved, showing hardly any 
division between base and declivity. Stalk of petiole shorter than the width of the 
node at its base. Second node seen from above wider than first, and produced at 
each side into a sharp angle. 
Antenne and legs with erect hairs. 
Sub-family IV. DottcHopsrin», Forel. 
Tapinoma erraticum, Ltr., subsp. nigerrimum, Nyl 8. S.W. 
Caspian, 1919; Amara, 1918 (Buxton). N.E. of Baghdad, 1918 
(Hivans). 
The §.W. Caspian specimens were taken by Mr. Buxton attending 
Aphis punicae, Pass., on wild pomegranate. 
(To be concluded.) 
TjHOTES ON COLLECTING, Ete. 
Norres From tHE Hit Muszrum.—Mr. J. J. Joicey has recently 
acquired the important collection of Lepidoptera formed by Mr. H. J. 
Elwes, F.R.S., and the large collection of Heliconius formed by the 
late H. Riffarth. 
The Elwes collection contains most of the types of species of the 
Indo-Australian fauna described by Elwes, as also some types of 
Doherty, de Nicéville, Christoph, and Staudinger. There is also in- 
cluded the material which formed the basis of the famous monograph 
on the Oriental Hesperidae by Elwes and Edwards, and also the 
material for the papers by Hlwes on the genera Vpthima and Cineis, 
and on the butterflies of Chili. This collection is especially rich in 
Lycaenidae, and students of this group will find at the Hill Museum 
one of the largest collections. 
The Riffarth collection of Heliconius, upon which was based the 
_- monograph by Riffarth and Stichel, contains over 2000 specimens, and 
includes 860 types and paratypes of species described by Riffarth and 
Stichel. 
