658 Mr. R. M^achlan on the 



Fabricius's name irroraia to Neuroma concatenata of Walker^ 

 with the remark that the type requires to be examined again. 



Phryganea signata, Fabr. Spec. Insect, i. p. 389, 7; Mantiss. 

 Insect, i. p. 245, 8 ; Ent. Syst. ii. p. 76, 8. 



*' P. alis griseo fuscis : margine postico flavo striato. 



" Habitat in America septentrionali Miis. Dom. Banks. 



" Parva. Caput fuscum. Alae griseo fuscae, nitidae, flavo macu- 

 latae et margine postico flavo striato." 



The type of this species is in very bad condition, without head, 

 abdomen and legs, and the wings are inextricably matted together, 

 so that the neuration of the anterior wings is almost our only guide 

 towards determining the genus. From the peculiar form of the 

 discoidal cell, the deep indentation formed by the sub-costal ner- 

 vure shortly before the apex, and the arrangement of the apical 

 veins, I have no doubt that the insect is a male of the genus Bra- 

 chycentrus, Curtis ; a conclusion favoured also by the general form 

 of the creature so far as this can be made out. 



The two described species of this genus from North America 

 are B. fuliginosus, Walker, Brit. Mus. Cat. pt. i. p. 88, 7, and 

 B. incanus, Hagen, Neurop. North Amer. p. 272, 2. It is impos- 

 sible to say if the species of Fabricius be the same as either of 

 these, but the description is rather in favour of B. incanus, an insect 

 I have never seen.* 



Dr. Hagen places P. signala. Fab., in Neuroma in his work 

 (p. 250, 4), with the query — " Does it belong to this genus ?" 



Phryganea notala, Fabr. Spec. Insect, i. p. 390, 12; Mantiss. 

 Insect, i. p. 246, 15 ; Ent, Syst. ii. p. 78, 18. 

 " P. alis anticis cinereo flavescentibus : macula marginali fusca. 

 " Habitat in America boreali Mus. Dom. Banks. 

 " Corpus fuscum antennis pedibusque testaceis. Alae anticae 

 cinereo flavescentes, unicolores macula marginali fusca, pos- 

 ticse albfe, hyalinae, nitidae," 

 When examining the type of this insect, the first thing that 

 struck me as singular was the peculiarly developed and deeply 

 divided prothorax indicative of the genus Dipseudopsis, Walker ; 

 and, on carefully comparing it with the type of Mr. Walker's 

 D. Capensis, I could not detect the slightest difference, and believe 



* Dr. Hagen now informs me that he thinks B. incaiiiis (of which he possesses 

 only one immature example) lo be idenlical with J3. fuliginoius. — R. M'L., 

 March, 1864. 



