228 ; March, 



Note 1.— One $ of this species, sent me by Mr. Rye, is entirely apterous. The 

 wings may have been lost by some accident, but no torn stumps are 

 visible. 



Note 2. — This species is very variable in size, and easily confounded with 

 others. The full-sized males are the largest insects of the genus. The 

 distinctive characters of the species are the 4th joint of the antennao, 

 which in the <J is twice, or more than twice, as long as the 2nd ; in the 

 ? the apical joint, which is longer than the preceding ; and in both sexes 

 the black tegulse. 



Common in several parts of the country ; near London, Cheltenham, &o. In 

 Mr. Walker's collection and my own. 



7. — Spilomicrus nigeiclavis, n, sp. 



Niger, politus ; antermw artt. 3 — 7 rufescentihus, clava 6-wrticulata, parum 

 discreta. Alee ahdomine hreviores, augustcB, infuscatoe, volatui vix idonem ; posticcB, 

 casta ciliata. Tegulce nigra. Caput parce griseo-pilosum. Pedes rufescentes, coxis, 

 trochanteribus, femorumque cla/vis medio nigris. Tarsi a/rticulo penultimo prater 

 hasin, ultimo toto, nigris. Abdomen apice griseo-villosv/m. 



$ . Long. If ; ala/r. exp. 2 J lin. 



Most resembles nigripes, which is distinguished by having the stria> of the 

 mesonotum impressed at the base, by the developed wings, colour of the legs, and 

 structure of the antennae. The present species has the thorax viUose at the sides 

 and shoulders, and the tibiae clothed with pale concolorous hairs. Prom stigmati- 

 calis it differs in having the apical joint of the antennae larger than the preceding ; 

 and from integer in having the mesonotum bisulcate. 



This remarkable species, from the London district, was given to me by Mr. Rye. 



Genus Loxotropa, Forster, Hym. Stud., ii., pp. 122, 123, 126. 

 BasalySy Hal., N. H. Rev., vol. iv., p. 171. 



Basalys, Sect. B, Thorns., Ofv., 1858, p. 368. 



Antennae of the ^ larger than the thorax, 14-jointed, 4th joint not longer than 

 the 3rd, sinuated at the base ; of the $ 12-jointed, clavate, the club abrupt, 3 — 4- 

 jointed. Mesonotum without dorsal lines. Scutellum depressed, margined at the 

 sides, with a basal foveola. Abdomen somewhat depressed, 2nd segment without 

 a basal furrow, not conically produced and acuminated in the $ . Femora and 

 tibiae clavate. Wings ciliated, sometimes abbreviated or wanting ; costal nerve 

 none ; sub -costal ending before the middle in a punctiform triangular stigma ; the 

 basal transverse nerve distinct. Pronotum and petiole lanate. 



The males of Dicupria, Latr., and Basalys, Westw., have 14-jointed antennae, but 

 the wings of the former are without a basal nerve, and in the latter genus the 4th 

 joint of the antennae is distinctly longer than the 3rd. Again, the females of 

 Glyptonota, Forst., Diapria, Latr., and Idiotypa, Forst., have the antennae 12- 

 jointed, but the two former genera have no basal transverse nerve, and the last has 

 the mesonotum bisulcate, and the club of the antennae 5-jointed. The type of 

 Loaotropa is Psilus antennatus, Jurine. There are several British species, only a 

 few of which have been indicated. 

 I. Club of the antennas 4-jointed. 9 . 



