MADEIRA ±yB TUE CANARY ISLANDS. 171 



Apparently the insular representative of K tetrarjrainmicus, 

 maintaining slight distinctive features. 



The type of lituratus, Brulle, is before me, and appears to be 

 only a small example of catta, which is virtually acknowledged by 

 Brulle : Oliviei-'s species of same name is certainly different. 



MYEMELEOif ALTERNANs, Bi'ulle (Hist. Cauar. ii. pt. 2, p. 82, 

 pi. iii. fig. -i; Hag. Eut. Month. Mag. ii. p. 01, redescribed). 



Madeira {Wollaston). 



Canaries {Webh et BeHlielot). 



I have not seen this species from the African continent nor 

 from Europe, and do not think the synonymy suggested by Hagen 

 (Ent. Month. Mag.) will hold good. Neither was my former 

 coupling of «Z^er;i«;w with 5ecre^«<5, Walker {cf. Journ. Linn. Soc, 

 Zoology, ix. p. 279, and Ann. Soc. Ent. Belg. xvi. p. 133), justi- 

 fiable. IL. alternans is a broader-wiuged species, with more dense 

 reticulation, the transverse nervules being faintly margined with 

 greyish, bringing out the network very conspicuously. BruUe'a 

 type is before me. 



The existence of several small species of Myrmeleon with the 

 abdomen yellow-banded occasions much confusion. 



Myrmeleon distinguendus, Bamhur. {31. liyalinus., Olivier ?? ; 

 Brulle, Hist. Canar. ii. pt. 2, p. 82, pi. iii. fig. 5.) 



Canaries (Webb et Berthelot). 



I have examined Brulle's type. 31. hi/alinus, Oliv., is an Arabian 

 species, and its identitj^ with the Canarian insect scarcely pro- 

 bable. 



In the Brussels Museum and in my collection is a species 

 collected by the late M. Camille Van Volxem, presumably in 

 Portugal, that appears to me identical with the Canarian ; both 

 these and Brulle's types are c? • 



Furthermore I have re-examined two $ types of II. distin- 

 guendus, Eamb., from Malaga (in De Selys's colleotiou). These 

 are larger (expanse about 50 mm.) ; but otherwise they appear to 

 me to agree ; the only difference (other than size) is a slight varia- 

 tion in the form of the dark space on the head about the base of 

 the antennae, which has a triangular excision on the face in the 

 types, not noticeable in the others ; but in Eambur's description 

 this character is given as an exceptiou rather than as the rule. 



In Brulle's type the dark markings on the head and thorax are 



12* 



