5 2 JAMES WATERSTON. 



4. P. tomaspidis, How. (1914) (I.e., p. 82). From eggs of Tomaspis varia ; Trinidad 



(P. L. Guppy) 

 Type (female) in U. S. N. M., No. 18,321, Washington, D.C. 



5. P. perhinsi, sp. n. From Tomaspis ? carmodyi ; British Guiana (C. B. Williams). 



Type (female) in British Museum, London. 



To the above should possibly be added Agonioneurus locustarum, Giraud (1), bred 

 from eggs of Xiphidiumfuscum in galls of Lipara spp. on Arundo phragmitis (Europe). 



Since sinking Paraphelinus, Perkins, Mr. Girault has with extreme brevity described 

 the undermentioned yellow or pale-coloured species of Aphelinus from Australia. 

 In 1913 (9) the following : — haeckeli, grotiusi* darwini, minutissimus, newtoni ; in 

 1915 (11) he added miltoni* and ruskini. Of these the two asterisked species are 

 probably referable to Paraphelinus, but only a re- examination of the types, which are 

 deposited in the Queensland Museum, Brisbane, can enable one to place them 

 exactly. 



No remarks have been offered in the notes just given on the general coloration of 

 Paraphelinus, but it is probable that the genus when more extensively collected and 

 described will be found to include only pale forms like perhinsi, xiphidii, and tomas- 

 pidis. Detailed colour notes have been given only for the first of these. The infus- 

 cations of the abdomen, etc., are exceedingly faint, and when the body contents have 

 been cleared away by potash the whole insect is perfectly transparent. Only in 

 xiphidii are the genae distinctly darker ; in tomaspidis they are faint. The wings in 

 xiphidii and perhinsi are hyaline, in tomaspidis faintly embrowned. The following 

 keys may serve to separate the species : — 



Key to the Males of Paraphelinus, Perhins. 



First two funicular joints very short and broad, the third elongate, cylindrical, 

 nearly equal to the club, which bears the longest bristles of the antenna 



xiphidii, Perk. 

 First two funicular joints normal, cylindrical, the third normal, two-thirds of 

 the club, which bears the shortest hairs of the antenna perhinsi, sp. n. 



Key to the Females. 



1 (2). Yellow and black species ; forewings with a conspicuous median black band 



as wide as the marginal and stigmal veins . . . . speciosissimus, Gir. 



2 (1). Concolorous, the head and thorax reddish yellow, abdominal tergites at most 



a little infuscated laterally ; wings hyaline or uniformly faintly tinted. 



3 (4). Deep orange yellow, immaculate ; hing wing near tip with about 5 lines of j 



discal cilia . . . . . . . . . . . . . . australiensis, Gir. 



4 (3). Paler species ; genae, metanotum and tergites of abdomen more or less 



infuscated. 



5 (6). " Hairless line " of forewings incomplete on anterior half, with anteriorly 



convergent sides . . . . . . . . . . . . tomaspidis, How. 



6 (5). " Hairless line " crossed at most by one or two lines of discal cilia at level of 



the radius knob, with sub-parallel sides. 



