642 The American Naturalist. [July, 
pteryx, that of Eriocephala does not appear to possess a well- 
marked spinneret; while it is easy to see it in the former 
genus, in Eriocephala I can only detect a lobe which appears 
to be simply the rudiment (anlage) of a spinneret (unless the 
latter is in my specimen bent under the head); but this organ 
needs further examination on fresh specimens. It would be 
interesting if it should be found that the spinneret isin a 
generalized or germinal condition, as compared with that of 
Micropteryx. 
The pupa.—Unfortunately, we are, as vet, ignorant of the 
pupa form. Dr. Chapman has only found the head-piece of 
the pupa, but refers it to the “Incomplete,” and thinks it 
probable that the pupa has the “third and following abominal 
segments free ” 
The eggs.—The egg, according to Chapman, is “large and 
spherical,” and laid in confinement in little groups, to the num- 
ber of twenty-five in all. 
Diagnostic characters of the Lepidoptera laciniata.—I add the 
characters of this sub-order. Imago. Maxilla with a well- 
developed lacinita and galea, arising as in mandibulate in- 
sects from a definite stipes and cardo, the galea not elongated, 
united and differentiated into a glossa, each galea being separ- 
ate from its fellow, and the two not acting as a “tongue.” The 
maxillary palpi enormous, six-jointed. Mandibles large, 
scarcely vestigial, with a broad, toothed cutting-edge, and with 
them apparently functional hinge-processes at the base, as 
usual in mandibulate insects. Hypopharynx well-developed, 
somewhat as in Diptera and Hymenoptera; second maxilla 
divided into a mala exterior, and a mala interior, recalling 
those of mandibulate insects; palpithree-jointed. Thorax and 
prothorax very much reduced ; metathorax very large, with the 
two halves of the scutum widely separate. 
Venation highly generalized; both fore and hind wings 
with external lobe or a “jugum ” as in Trichoptera, veins as 
in Micropteryx and showing no notable distinctions compared 
with those of Micropteryx; scales generalized ; fine scattered 
setee present on costal edge and on the veins. Abdomen 
elongate, with the male genital armature neuropteroid, ex- 
serted, the dorsal, lateral and sternal appendages very large. 
