lyjG BihUographical Notice. 



tragus, inner edge 5, breadth 3 ; third finger, metacarpus 45, 

 1st phahuix 22, 2nd phaknx 22 ; fifth finger 58 ; lower leg 

 and foot (c. u.) 32. 



Skull: greatest length 20*5; zygomatic breadth 15"5 ; 

 occiput to nasal notch 17 ; front of canine to back o£ m^ 8'3. 



Hah. Malacca. 



Type. Adult male. Original number 100 A. From the 

 collection of the late Mr. R. F. Tomes. 



This fine bat, vA'hich is distinguishable at the first glance 

 from its only near ally, U. Tickelli, by its uniform dar 

 colour, was recognized by Mr. Tomes as a new species, and 

 marked by him witli a name which I would have adopted 

 did it go euphoniously with the long generic name Ilespero- 

 ptenus. But as it does not I am glad to commemorate 

 Mr. Tomes^'s great interest in bats, and the work he did on 

 them, by naming this species in his honour. 



BIBLIOGRAPHICAL NOTICE. 



Coloration in Polistes. By Wilhelmine M. Enteman. Published 

 by the Carnegie Institution of Washington, November 1904. 

 Sm. 4to. Pp. 88, coL pis. vi., and 27 figures in the text. 



Polistes is a handsome and widely-distributed genus of wasps 

 allied to Vespa ; it is, however, unrepresented in Britain, and only 

 one species {P. gallicus, L.) is found in Europe, though this has 

 been met with as far north as Lapland. After a general account of 

 the genus the present essay records the results of a careful investi- 

 gation into individual variation in the colour-patteru of Polistes ; 

 ontogenesis of the colour-pattern ; physical and chemical nature of 

 the pigment ; geographical distribution of the types of colour- 

 marking ; laws governing colour-differentiation ; and considerations 

 •with respect to various theories of evolution. Two of the plates 

 are devoted to colour-patterns, two to figures of various species of 

 the genus, and two to maps showing distribution. The parallel 

 drawn between Eurasian and American variation in the genus is 

 specially interesting, 



"We also meet with occasional references to colour-patterns in 

 other Yespidse, as well as in butterflies &c. The authoress's con- 

 clusions are finally summed up under fourteen heads, too long to 

 quote here, and we must confine ourselves to calling attention to a 

 work which should not be overlooked by biologists (whether specially 

 hymenopterists or not) who are interested in coloration, geographical 

 distribution, and the other factors bearing on evolution which are 

 here discussed. 



