1970] 
MacLeod — Baltic Amber Neuroptera 
153 
Gerand le Puy, France. Both of these deposits are referred to Upper 
Oligocene horizons. Navas (1913) has erected a new genus for 
each of the fossil species, Borgia and Ricartus respectively, but this 
treatment, as well as their original assignment to Ascalaphus , has 
no present value as the fossils have never been restudied in the light 
of the modern classification of the family. Weidner (1958) described 
a larva from the Baltic amber which he felt was an ascalaphid. My 
study of this specimen had indicated that it is actually a nymphid 
and it is dealt with below under that family. 
The collection of the Museum of Comparative Zoology contains 
a beautifully preserved small larva which is without question an 
ascalaphid. Because this specimen provides the earliest geological 
record for a member of this family, a formal description of the 
larva is presented here. 
Neadelphus new genus 
(figs. 1-4) 6 
Description . Head capsule: quadrate, parallel-sided, with cor- 
date postero-lateral margins; surface generally smooth, raised bases 
of setae imparting only a slightly rugose texture to surface. Ocular 
tubercles large, prominent, approximately parallel-sided, each with 
the usual seven stemmata, six visible in dorsal view, the seventh 
located ventrally. Antennal tubercle very small. Jaws very long 
and slender, nearly straight for most of their length, with the three 
true teeth of the medial mandibular surface beyond the mid-point 
of the mandible. Labial palpi short, slender. 
Body: prothorax approximately elliptical, with a bilateral pair of 
small, globular setigerous tubercles antero-laterally ; prothoracic 
spiracles only slightly produced as a low cone, elliptical in outline. 
Meso- and metathorax broader and shorter, each with two elongate 
setigerous scoli on each lateral margin, the posterior member of 
each pair distinctly smaller than the anterior one. Legs as in fig. 4, 
the tarsi quite distinct from the tibiae on the pro- and mesothoracic 
segments, the metathoracic tarsi fused to their tibiae and showing 
no indication of a line of fusion. 
Abdominal segments I-VIII with a bilateral pair of elongate, 
unflattened, setigerous scoli, the pairs located on segments I-VII 
°The specimen upon which these descriptions are based has previously 
been illustrated, as a color photograph, on p. 21, of the volume of the 
Life Nature Library entitled The Insects (1962. New York: Time Inc.). 
