Hymenoptera aculeata collected in Algeria: the Sphegidae. 87 
impressione pilosa magis transversa; 7" pilis apice non fimbriato 
sed lateraliter fasciculato ; 8°" penicillis quattwor (!) ornatur, duobus 
in medio marginum lateralium (brevissimis), duobus apicalibus 
(tenuibus quidem sed longis). Metatarsus intermedius gracilis, 
curvatus, mox post basim ad apicem sensim dilatatus. Tempora 
subtus haud ut in femina dentata. Ocelli postici inter se multo 
magis quam ab oculis distant(!) Corpus, facies praesertim et seg- 
mentorum ventralium apices, pilis argenteis vestitum; his tamen, 
nisi sub certa lucis incidentia, vix conspicuis. Integumentum 
corporis (exceptis scutellis et areis quibusdam ventralibus) sub- 
opacum ; propodei area media lateribus oblique striolatis et punctulis 
nonnullis obsoletis impressa nitore poene caret, areae eiusdem 
laterales cum dorso abdominis confertim sed haud profunde punc- 
tantur. Area pygidialis apice quam basi fere latior, certe haud 
angustior (1). 
Long. cire. 13 mm. 
Mr. Eaton notes that the eyes in this sp. are in life 
“light yellowish green.” 
22 f. Biskra, on Zizyphus lotus, 24. v, 94. A. E. E. 
1 g. Biskra, on Zizyphus lotus, 22. v, 97. A. E. E. 
22%. Biskra, on Ammi visnaga, 25. v, 98. A. E. E. 
1 f. Biskra, on Amini visnaga, 21. v, 97. A. E. E. 
32 9. Biskra, on Ammi visnaga, 23. v, 18 and 22 vi, 97. 
A. E. E. 
; : Bh Biskra, 20. v to 9. vi, 98. F. D. M. 
CERCERIS CAPITO, Lep. 
1 f. Biskra, on Tamarix, 29. iv, 97. A. EK. E. 
Bet te Piskras bev to, 9) va 98.) “FAD: M. 
CERCERIS HARTLIEBI, Schulz 
This is probably the only recorded Cerceris which is 
practically black entirely—body, legs, and even wings! 
Certain parts, it is true, are obscurely rufescent, but its 
general appearance is of an insect uniformly black. 
It was described first so lately as 1905 from a single @ 
taken in Tunisie (Sfax) by Rittmeister v. Hartlieb, and no 
corresponding ¢ form has as yet been recorded. 
I must confess myself to be not quite convinced that it 
is anything more than a local melanic 2 form of capito, 
with which species, until Dr. Schulz’s description appeared, 
had intended to treat it as specifically identical. My 
