84 Ins. 
COLEOPTERA. 
Mioptachys , g. n., Bates, Biol. Centr. Am. Col. i. (1) p. 144. Allied to 
Tacky s , Anillus, and Scotodipnus ; eyes present, body glabrous, terminal 
joint of palpi long. Types, M. trechoides , pi. vi. fig. 6, and oopteroides , 
spp. nn., 1. c. p. 144. Polyderis hreviuscida , Motsch., probably also belongs 
to this genus. 
New species : — 
Anillus integripennis , Bates, Biol. Centr. Am. Col. i. (1) p. 145, pi. vi. 
fig. 5, Guatemala. 
Tachypus abnormicollis , Yon Heyden, Deutsche E. Z. xxvi. p. 118, 
Margelan. 
Tachyta autiimnalis , Moxico, Guatemala, and cucvjoides, pi. vi. fig. 7, 
British Honduras, Guatemala, Bates, l. c. pp. 187 & 188. 
Xystosomus sublcuvis and sulcicostis, Bates, l. c. p. 146, Chiriqui. 
Tacky s castanicolor , Guatemala, chiriquinus, Chiriqui, lymnceoidesjim •], 
Guatemala, p. 139, obtusellus, Mexico, mundulus , Mexico, Guatemala, 
pericallis, pi. vi. fig. 10, Guatemala, p. 141, microspilus , Guatemala, 
Nicaragua, purgatus , Mexico, Guatemala, amplicollis, Mexico, Guatemala, 
Nicaragua, p. 142, jansoni, Chontales, curvans , Guatemala, and cribellatus, 
Mexico, Guatemala, p. 143, id. 1. c. ; T. discipennis f p. 232, amplipennis 
and arculus , p. 233, Fauvel, Rev. d’Ent. i., New Caledonia. 
Pericompsus sticticus , Bates, l. c. p. 146, Guatemala. 
Bembidium sphceroderum, pi. vi. fig. 12, Mexico, p. 147, ckampioni , 
Guatemala, p. 148, lucidum , Hudson’s Bay to Mexico, vernale, Mexico, 
p. 149, scintillans , Mexico, p. 150. and spar sum , Mexico, Guatemala, 
p. 151, id. 1. c. ; B. muses and laiiusculum, Broun, N. Z. J. Sci. p. 225, 
New Zealand ; B. liamiferum , Fauvel, l. c. p. 231, Kanala. 
Ampkizoa davidis } Lucas, Bull. Soc. Ent. Fr. (6) ii. p. clvii., Moupin. 
DYTISCIDiE. 
Burgess, E. The structure of the mouth in the larva of Dytiscus. 
P. Bost. Soc. xxi. pp. 223-228, woodcuts. 
Instead of being mouthless, as usually assumed, the insect has a very 
wide mouth, but the lips are closely locked together by a dovetailed 
grooved joint. 
Sharp, D. On aquatic carnivorous Coleoptera or Dytiscidce. Tr. Dubl. 
Soc. (2) ii. pp. 179-1003, pis. viii.-xviii. \_Cf. Marseul, Nouv. et 
faits (2) pp. 161-164.] 
A very elaborate work, prefaced by a detailed description of the 
structure of the insects. 1171 species are described, and those of other 
species, unknown to the author, are added in an appendix, raising the 
total number to 1511. A trinomial nomenclature is adopted throughout, 
species already known being quoted under their genus, both by the 
generic and specific names of the original describer. The first two plates 
are devoted to details ; the remainder represent one or more species of 
all the genera (upwards of 200, of which a large proportion are new), 
