TITLES. 
Ins . 65 
643. Schoyen, W. M. Om forekomsten af Dipterlarver under huden 
hos Mennesker. Ent. Tidskr. 1886, pp. 171-187. 
He considers that the larva of Hypoderma bovis is certainly found 
occasionally under the skin of man in Norway. 
644. Sen ulthess-Rgcii berg. ZurHummelfauna Corsica’s. MT. schw. 
ent. Ges. vii, pp. 272-277. [Hymenoptera.] 
2 new species. 
645. Schwarz, E. A. Remarks on N. American Scolytids. Ent. Am. 
ii, pp. 40-42 & 54-56. [ Coleoptera .] 
Includes 1 new species. 
646. Scott, J. Description of a new genus and species of Ilemiptera- 
Heteroptera. Ent. M. M. xxiii, p. 64. 
647. Scudder, S. H. Systematic review of our present knowledge of 
fossil Insects, including Myriapods and Arachnids. Bull. U. S. 
Geol. Surv. xxxi, pp. 1-128. 
This is a translation from Zittel’s Handbuch der Palaeontologie, and 
will be found very useful, though wanting the figures accompanying the 
original work. 
648. . The 'oldest' known Insect-larva, Mormolucoides arliculatus , 
from the Connecticut river rocks. Mem. Bost. Soc. iii, pp. 431-438, 
pi. xlv. [ Palceo-entomology.~\ 
Considered to be nearest allied to Sialidce , though a resemblance to 
Coleoptera is admitted. 
649. * . A review of Mesozoic Cockroaches. T. c. pp. 439-483, 
pis. xlvi-xlviii. [Palceo-entomology.'] 
A considerable number of new genera and species, chiefly from the 
English beds, are established, and several previously known fossils are 
referred to other genera. The amalgamation of the principal nervures 
of the upper wings is said to be the most important of the points by 
which these mesozoic forms differ from the Palaeozoic Cockroaches, and 
in this respect they approach the. living Cockroaches. 
650. . Description of an Articulate of doubtful relationship from 
the Tertiary beds of Florissant, Colorado. Mem. Nat. Ac. Sci. iii, 
pp. 87-90, woodcuts. [Palcco-entomology.'] 
Referred with doubt to Thysanura. 
. [See also Miall & Denny.] 
651. Selys-Longchamps, — . Odonates nouveaux de P<$kin. C.R. ent. 
Belg. 1886, pp. clxxviii-clxxxiv. [NeuropteraJ] 
Of 6 species received from this locality 5 were new. Four of the 
novelties are said to be purely Palaearctic. 
652. . Revision du Synopsis des Agrionines. Mem. Cour. 8vo, 
xxxviii, pp. 1-233, sep. pag. [ Neuroptera .] 
It is about twenty-five years since this author published the synopsis 
of the Agrionines , and the revision he now gives comprises many novel- 
