288 
ZOOLOGICAL LITERATURE. 
error of the opinion expressed by himself in the papers above 
referred to on the same subject. He notes the habits of equa- 
torial Prionides, 
Bates (l.c. p. 39) considers Parandra an extreme development ot* the 
Mallodm type, and to he wrongly included hy Lacordaire in his aitilicial 
group of “ Prionides aberrants.” Bates describes the (S of Macrodontia ere- 
nata (Oliv.), 1. c. p. 41, and points out (p. 44) that Lacordaire’s generic cha- 
racter of sexual difference in the punctuation of thorax in Ctenoscelis is not 
applicable. 
Mallodm occipitale (Thoms.) is probably synonymous with M. hajulus (Er.), 
hitherto erroneously cited as Chiasmeteslimee (Gu^r.), $ : Bates, 1. c. p. 47. 
Lacordaire’s characters for Mallasjm (Serv.) are no longer applicable ‘ac- 
cording to Bates (p. 49), who states that only its pilose scutellum will now 
distinguish it from Pyrodes (Serv.). 
Pyrodes fustuosus and heterocerus (Er.), P. antennatiis and petalocerus 
(White) pulcherrimm (Perty), according to Bates (/. c. p. bO), the first of 
them being the $ , and the three next the S of the last-mentioned species. 
P. ruhrozonatm (Lucas) = nigricornis (Gu^r.). Bates, /. c. p. 53. 
Bates (/. c, p. 65) enumerates the species of Pyrodes^ as restricted by him, 
and remarks upon their liability to vary in characters usually considered 
specific. He hints that the whole may possibly constitute one variable spe- 
cies. P. columbmus (Gu^r.) he refers to JSsmeralda (Thoms.), and has no 
doubt that jy. suavis (Thoms.) is its male. 
Nicias (Thoms.) has a nearer affinity to Esmeralda than to any of the 
PcecilosomincB, in which Lacordaire places it. Bates, /. c. p. 58. 
Walsh & Riley (Amer. Entom. i. pp. 231-234) record the economy 
and describe and figure the earlier stages and imago of Prionus laticullis 
(Drury), which appears to be injurious to grape-roots in North Amoiica. At 
p. 232, note, is a full description of the larva, with a fig. of the anterior seg- 
ments viewed from beneath. 
Riley (First Ann. Rep. nox. Ins. Missouri, 18G9, p. 124 et seq.) figures 
and describes the larva and perfect insect of another grapo-root-borer. Ortho- 
soma cylindricum (Fab.), with some slight doubt as to its correct determina- 
tion. 
New genera and species : — 
Ommatomenus, g. n., Higgins, Trans. Ent. Soc. Lend. 1809, p. 11. Ooii- 
nects the Acanthophorus group (pi. ii. fig. 2) of the Old World with the Dcro- 
brachtis (ib. fig. 3) group of the New World. Distinguished from Tithoes and 
Acanthophorus by its voluminous eyes, which nearly meet above and below, 
and from Dorycera (White) in the form of the body and prosternum. Sp. : 
O. sericatus, sp. n., Higgins, 1. c. p. 12, pi. ii. fig. 1, mouth of the Niger ; O. 
megalops (White, Acanthophorus). 
Osphryotif g. n., Pascoe, 7 c. p. 662. Has the antenn® of Sarmydus {Clos- 
tcrides), from which its parallel, posteriorly truncate metathoracic episterna 
distinguish it. The only known genus of Derobrachides not American. Sp. 
O, adustus, sp. n., l*asc. ibid., pi. xxiii. fig. 2, Doroy. 
Dysiutus, g. n., Pascoe, 1. c. p. 664. Allied to Xixuthrus (Thoms.), but 
with third joint of ant. much shorter than scape, joints 4, 5, and 6 rather 
