1865.) 79 



hairs ; the posterior grey, with grey fringes. Aual appendices of the 

 male pale ; the superior long, narrow, straight, somewhat dilated at the 

 base, and with long cilise ; the inferior short and broad, in the form of 

 an oval plate, with a thin and long superior branch, which is curved 

 inwards ; between the inferior appendices there are two supplementary 

 appendices, long, forming a narrow plate, curved inwards at the apex ; 

 penis-cover triangular, roof- shaped ; penis inflated beneath at the apex, 

 with many rather long spines. Abdomen of the female ending in a 

 triangular oviduct, which is acute and turned upwards.* 



Madeira. 



Nos. 45 and 46 ^J ; 47 and 48 ? . 



T. GBisEA, Hag. Stett. Zeit. t. 21, p. 283, 5. 



Clnerea, luteo-hirta ; corpore palpisq^ue fuscis ; antennis fiavis, fusco- 

 annulatis ; alls griseis, luteo-Jiirtis ; posficis cinereis, cinereo-ciliatis ; 

 pedibus pallideflavis. 



Long, cum alis 12 mill. ; exp. alar. 20 mill. 



Belonging to the same group as T. cinerea, and very similar to 

 that species, but larger. Head slightly excised in front. Antennae 

 yellow ; basal joint brown, second joint yellow, with a brown external 

 basal spot, the remainder yellow, with the apical half of each joint 

 brown. The oviduct as in T. cinerea. The hairs of the body are 

 rubbed olf. Notwithstanding the extreme resemblance to T. cinerea, 

 I am convinced that it forms a separate species, for the size is too 

 different, and the colours described justify a separation. It is necessary 

 to see fresh specimens, especially of the male. 



Madeira : one female. 



No. 49. 



G-enus Poltcentbopus, Curtis. 



P. FLAVOSTICTUS, U.S. 



Nigro-fuscus, nigro-villosus ; corpore supra nigra, suhtus pallidiori ; 

 antennis palpis^ue fuscis ; alis ant ids nigro-Juscis, Jlavo-maculatis, 

 posticis cinereis, cinereo-ciliatis ; pedihus fuscis, posticis testaceis. 



Long, cum alis 8 mill. ; exp. alar. 17 mill. 



Body blackish, pale beneath, ciliated with black, especially on the 

 head. Vertex inflated, with two elongated, slightly curved, tubercles 



(* This species is very closely allied to the British insect, that I consider T. puHlla of Curtis : so 

 closely, indeed, that I do not feel sure if it be really distinct. In making a careful comparison of the 

 appendices of the two species, I could not, however, find in 2'. cinerea tlie small inferior branch of the 

 inferior a|)peiidage, to be seen in T. piisilla. The types of c'mtrca are gummed on card, and, from 

 this cause, it is impossible to make so good an examination as could be wished ; this may also partially 

 explain the apparent darker colour of the wings.— R. McLachlan.) 



