V. I). WKKLK, I'hANIl'KNNlA KT 1'ANORhATA. 15 



Genus: Foriniciileo LEACH (1805). 



LEACH, Edinburgh Kncyrl. IX, p. 138 (1815). This genus contains many dis- 

 cordant forms. 



* Fornricaleo lethalis (WALKEK). 



WALKER, Cat. Brit. Mus. Neur., p. 37i n 129 (1853). - Formicaleo leucospilos 

 HAGEN, Peters' Reise nacli JMossambique, p. 101, t. V, f. 4 (1862). 



This species, common in Africa and with the same distribution as Myrmelcon obscn- 

 rus and qumguemaculatus, is represented by a series of 5 specimens (2 </, 3 $), all 

 from Mombo, Uwtmbara, June 1906. 



KOLBE had not seen it from German East-Africa but presumed its occurrence. 



* Formicaleo aegyptiacus (RAMBUR). 



RAMBLIR, Hist. Nevropt. p. 393 (1842); v. D. WEELE, 1. c. p. 271 (1907). - One 

 female of this aberrant species, labelled: Jlcru low lands, Ngare na nyuki, June 1906. 



* Formicaleo sjostedti, n. sp. 



Fig. 2. - This new species has rather the appearance of a Myrmeleon, as its 

 antennae are relatively short and clubbed, the wings narrow and lanceolate. The length 

 of the tibialspurs however is about that of the two basal tarsal joints and the metatarsus 

 is shorter than the ultimate tarsal joint, so that it must be arranged provisionally in 

 Formicaleo as an aberrant species. 



Somewhat smaller than Myrmelcon obscurus RAMB. Colour 

 of the body blackish. Head black, underside, mouthparts, labrurn 

 and annulations of the antennae narrowly, yellow. Vertex black, 

 with a narrow, indistinct, yellowish transverse line, beginning at 

 the sides but not reaching the middle of it. Occiput black, with two 

 short parallel yellowish streaks in the middle, which are more 

 distinct than those of the vertex. Antennae black, not so long 

 as head and thorax together, with a broad club. 



Eyes greyish black. Pronotum blackish grey, with 5 narrow 

 yellowish lines, viz.: one median, two lateral ones and the sides 

 narrowly yellow (Fig. 2). Prosternum yellowish. Meso- and meta- 

 thorax black. The mesonotum with two parallel, longitudinal yellow Fi s- 2 - Formimico 



Head and thorax. Upper side. 



lines at the hinclborder. 



Legs yellowish brown, short and slender, sparely with long black bristles. The tips 

 of femora, tibiae and tarsi narrowly annulated with black. Femora at the outer side wilh 

 a blackish streak, that forms a broad annulus in the median pair, whereas in the forelegs 

 it occupies the whole femora except the base, which remains yellowish. The anterior 

 tibiae are also much darker than the other. Spurs of hindlegs brown, reacUing about 

 to the middle of the third joint. 



