118 HEMIPTERA-HETEROPTERA. 



latter seem to lead to the Pediculid^, though the last are too 

 distantly related even to be ranked as Hemiptera at present). The 

 Ceratocombid^ have strong affinities to the Anthocorid^ on the 

 one hand and to the AcANTHiiDyE on the other. The Aepophi- 

 LiD^ are also closely related to the Ceratocombid^ and Acan- 

 THOCORiD^. The AcANTHiiD^ lead very naturally to the OcH- 

 terid^, and it is doubtful if the latter can reasonably be separated 

 from the Naucorid^, which by many authors are united with the 

 Belostomatid^. 



The fact is that the Pagiopoda are as a whole very homogeneous^ 

 and for the present it seems best to keep up a number of families. 



The most recent monographs, catalogues, works with detailed 

 illustrations, etc., on these families are as follows: 



1849. — 50 Herrich Schaffer, G. A. W. — " Die Wanzenartigen 

 Insekten," ix, 1-348, pis. 289-324. The early part deals 

 with aquatic forms. 



1852 (?). — Fieber, F. X — " Genera Hydrocoridum" and "Species 

 Generis Corisa," Abh. bohm. Ges. Wiss. (5), vii, 181- 

 260, 6 pis. Deals with aquatic forms. 



1878-'96. — Reuter, 0. M. — "Hemiptera Gymnocerata Europse," 

 Act. Soc. Sci, Fenn.^ xiii, 1-568 and separate (Helsing- 

 fors), vol. iv and v, 571 pp. (In all 34 pis. and 1139 

 pp). Deals with a part of the Palaearctic MiriDjE and 

 is/aci/e/)rince;)s among works on Hemiptera up to the 

 present. 



1884. — Idem. — " Monographia Anthocoridarum," Act. Soc. Sci. 

 Fenn., xiv, 1-204. 



1890.— Atkinson, E. T.—" Catalogue of the Insects, No. 2. . . . 

 Fam. Capsidffi," J. A. S. Bengal, Iviii, pt. 2, suppl. 25- 

 199. Most recent catalogue of the Miridse. 



1891. — Reuter, O. M. — "Monographia Ceratocombidarum," Act. 

 Soc. Sci. Fenn., xix. No. 6, pp. 1-28, pi. 7. 



1896. — Lethierry & Severin. — "Catalogue General des Hemip- 

 teres." iii, 215-255. Most recent catalogue of x4ntho- 

 coridse, Ceratocombidse, Acanthiidse, etc. 



1896-1904. — Montandon, A. L. — Numerous revisions of Naucori- 

 dse, Belostomatidse and Nepidse. 



1904. — KiRKALDY, G. W, — "Ueber Notonectiden," Wiener Eut. 

 Zeit. xxiii, 93-135. A revision of the family. 



