THE BRACHYPTEROUS CRYPTIN^. 35 



furthest from the thorax becomes the "base."" The formation of this 

 segment in Oreshius is shown by the illustration to be normal, and 

 Marshall states that the genus differs from A])tesis only in the 

 unicolorous antennae. Hence it appears that, in Mr. Morley's table of 

 the genera of the P/ii/fiadninuvti {Iclni. Hrit., ii., pp. 2, 8) the first and 

 last sections should be deleted, and after no. 21 should be inserted : — 



Antennte of female white-banded . . . . . . . . Microcryptub. 



Antennte of female unicolorous . . . . . . . . Oresbius. 



The position of Apterop/iy(jas paradoxus, Bridg., is a matter of 

 considerable difficulty. It certainly cannot be correctly placed in 

 Cremnodes, because the distinctive character of that genus is the almost 

 entire absence of a metanotum, the costa bounding the petiolar area 

 closely approximating the base of the metathorax ; and in A. paradoxus 

 the metanotum and the petiolar areas are of equal length. At the 

 same time it must be acknowledged that the insect does not correspond 

 with the published description of any known genus, and it would be 

 highly undesirable to found a new genus upon a single specimen, 

 which I am inclined to regard as abnormal. 



As nothing has hitherto been known of the economy of Cremnodes 

 (itricapillus it is interesting to note that Mr. Morley has identified 

 a specimen in Cameron's collection, bred from a Dipterous leaf -miner 

 on primrose {cf. Ann. Scot. Xat. Hist., 1907, p. 90). 



Table of Genera and Species. 

 (Numbers after species refer to pp. in Mr. Morley's work.) 



(4.) 1. Wings wanting. 



(3.) '?. Segments 2 and 3 connate, and occupying 



most of abdomen . . . . . . . . Thaumatotypus, 239. 



(2.) 3. Segments 2 and 3 normal. . .. .. Pezomachds, 177. 



(1.) 4. Wings present, but never fully developed. 



(6.) 5. Terebra as long as abdomen ; metathoracic 



areas complete . . . . . . . . Obisiphaga, 60. 



(5.) 6. Terebra not more than half as long as 

 abdomen ; metathoracic area rarely 

 complete. 

 (16.) 7. Terebra longer than basal segment. 

 (15.) 8. Penultimate tarsal joint bilobed . . . . Spilocryptds, 270. 



(12.) 9. Thorax entirely black. 



(11.) 10. Anterior coxas red . . . . . . . . S. incuhitor, 271. 



(10.) 11. Anterior coxEe black .. .. . . S. migrator, 275. 



(9.) 12. Thorax not entirely black. 



(14.) 13. Only scuteilum red S. abbreviator , 278. 



(13.) 14. Thorax entirely red . . . . . . var. hopei, 279. 



(8.) 15. Penultimate tarsal joint not bilobed . . Plectocryptus grisescens, 9. 



(7.) 16. Terebra not longer than basal segment. 

 (20.) 17. Terebra less than half basal segment. 



(19.) 18. Metathorax sloping from base . . . . Cremnodes atricapillus, 62. 



(18.) 19. iMetathorax not sloping from base ; meta- 

 notum as long as petiolar area . . . . Cremnodes paradoxus, 62. 

 (17.) 20. Terebra longer than half basal segment. 



(22.) 21. Wings clouded, with hyaline fascia .. Spinola /((Z'i;ctiZatits, 115. 

 (21.) 22. Wings without fascia. 



(36.) 23. Area of metathorax complete . . . . Phygadedon, 71. 



(27.) 24. Segments 2 and 3 occupying almost whole 



of abdomen. 

 (26.) 25. Thorax black . . , . . . ..P. heinemanni, 79. 



* " Segmentum primum . . . Pars antica, inter tubercula ista et margina 

 apicalem segmenti sita (in Monographia Ichn. pedestriura minus apte area 

 nuncupata) plurimis speciebus latior est parte postica." — Grav., I. E., i., 85; cf. 

 Mori., I. E., ii., 3. 



