1901.] 



Ill 



men given to Mr. Vcrrall by the late J. C. Dale ; while among the 

 insects as yet unincorporated in the collection at the British Museum 

 I found several specimens taken in Devonshire by Col. Yerbury, during 

 the month of April, including a pair taken " in coitu " at Bovisand. 



Zetterstedt's description of this species is perfectly recognisable, 

 though he described it as a doubtful Anthomijza, which Meade, in 

 1883, installed in our British List as a Pegomi/ia ; Yerrall, in the 

 Entomologist for 1890, page 151, being the first to point out the true 

 position of Zetterstedt's species, though he wmngly considered it 

 identical with H. atricornis, Mg. Desvoidy's Thelida filiformis and 

 Macquart's H. cinereUa may be synonyms of this species, and either 

 of their names would have priority over Zetterstedt's, but the identi- 

 fication of their insects from the shortness of their descriptions must 

 be pure guess work, consequently I do not feel inclined to accept 

 either of their names. Haliday's description of ?I. oculata in 1833 

 obviously refers to the present species, and the species Meade de- 

 scribed in this Magazine for 1899 under the same name is also pro- 

 bably H. roiundicornis, at least the specimen ho mentions as having 

 received from Mr. Verrall would be, while he apparently considered 

 there was only one species in the genus. 



3. — H. OCULATA, Fallen. 



(? . Tn general appearance very like the last species. Eyes not so large 

 (though larger than in the species of allied geneva), 

 leaving the jowls larger than in either the last two 

 species. Frons much narrower, being just in front of 

 the ocellar triangle only about as wide as the pos- 

 terior ocelli are apart, but widening out until just above 

 the antennse it is four times as wide ; there are no 

 fronto-orbital bristles ; the face is proportionately 

 wider than in the last species, and the vibrissse are 

 placed wider apart ; in profile the head is rather wider 



and more semicircular; the antennae are not so black p,^. 4,_// oculata <J. 



being brownish-black, with the first two joints and the base of the third joint 

 obscurely reddish. 



The dark lines on the thorax are not so broad ; the scutellum is distinctly 

 paler than the thorax, especially towards its tip where it is yellowish-grey ; pleurte 

 and metanotum light grey. There are only three pairs of the outer dorso-central 

 bristles strongly developed all behind the suture. Abdomen, wings, and legs as in 

 the last species, but the middle tibiae bear a longer apical spur while there is an 

 evident, though short, spur to the hind tibiae. 



$ . A very different looking insect from the male, being more like a large 

 Tephrochlnmtis rtifiventris. The frons is not so wide as in the female of T. riifi- 

 ventris, while the eyes and antennae are larger, the latter especially so ; the back of 



M 2 



