f-N-PIERCE-FES. UCSB LIBRARY THE GENITALIA OF THE BRITISH GEOMETRID^:. Even the smallest contribution to our knowledge adds to the common store. The Genitalia of The Group Geometridae of the Lepidoptera of the British Islands. AN ACCOUNT OF THE MORPHOLOGY OF THE MALE CLASPING ORGANS AND THE CORRESPONDING ORGANS OF THE FEMALE. BY F. N. PIERCE, F.E.S. ILLUSTRATED BY THE AUTHOR. LIVERPOOL . F. N. PIERCE, THE ELMS, DINGLE. 1914. Printed by THE NORTHERN PUBLISHING COMPANY, LTD., 17 Goree Piazzas, Liverpool. Plates by T. CHELL, 22 Cable Street, Liverpool. [COPYRIGHT UNDER ACT OF 1911.] INDEX OF GENERA. Abraxas Page ... 24 Deuteronomos Acasis ... 60 Dyscia Acidalia ... 32 Earophila . . . Agriopis ... 20 Ectropis Alcis ... 17 Ellopia Aleucis ... 22 Ematurga . . . Alsophila ... 21 Ennomos Amoebe ... 61 Entephria . . . Anagoge 5 Epione Anaitis ... 77 Epirrhoe Angerona . . . ... 12 Erannis Ania ... 28 Euchloris . . . Anteois ... 26 Eulype Anticlea ... 74 Euphyia Aplasta ... 2 Eupithecia ... Apocheinia ... ... 15 Glaucopteryx Aspilates ... 22 Gnophos Asthena ... 39 Gonodontis ... Biston ... 13 Gymnoscelis Boarmia ... 16 Hemerophila Boletobia . . . ... 38 Hemistola . . . Bupalus ... 13 Hemithea . . . Cabera ... 31 Hipparchis . . . Calliclystis ... ... 53 Hydriomena Campsea ... 12 Hvgrochroa . . . Camptogramma ... 75 lodis Carsia ... 77 Lampropteryx Cepphis 5 Larentia Chesias ... 77 Lithina Chloroclystis ... 54 Lithostege . . . Chlorissa 3 Lobophora . . . Cidaria ... 64 Lycia Cleora ... 18 Lygris Cleorodes ... 17 Lythia Codonia ... 36 Macaria Coenocalphe . . . ... 57 Melanthia . . . Collix ... 54 Mesoleuca . . . Colotois 9 Mesotype Comibaena . . . 2 Minoa Cosmorhoe ... ... 29 Nothopteryx Cosymbia ... 37 Nyssia Crocallis ... 8 Ochyria Deileptenia ... .. 19 Odezia 8 24 74 19 13 16 8 61 7 69 21 2 55 56 44 61 23 7 54 17 4 2 1 68 9 3 62 71 6 78 59 14 63 37 10 56 71 75 38 60 14 74 78 INDEX OF GENERA. Page Operophtera ... 40 Pseudopanthera Opisthograptis 7 Pseudopterpna Oporinia ... 41 Psodos Ortholitha ... ... 76 Ptychopoda . . . Orthonama ... ... 74 Rhodoinetra Ourapteryx ... 4 Selenia Pachycnemia ... 6 Selidoseina ... Parascotia . . . ... 38 Sterrha Pelurga ... 66 Thalera Perconia ... 22 Thera Percnoptilota ... 75 Theria Perizoma . . . ... 42 Timandra Philereme . . . ... 58 Triphosa ... Plagodis 5 Xanthorhce ... Plemyria ... 66 Page 4 1 15 26 35 5 18 27 3 66 22 36 59 72 IX. INDEX OF SPECIES. (Synonyms in Italics.) Plate Page Plate Page abbreviata .27 45 bilunaria ... ... 5 6 abietaria ... .12 19 bimaculata ...20 31 abruptaria .11 17 bipunctaria ...47 76 absinthiata .29 49 bisetata . . . ...17 26 adcequata .26 42 bistortata... ...13 20 adustata ... .16 24 biundularia ...18 20 advenaria ... . 8 5 blandiata . . . ...26 42 sescularia ... .14 21 blomeri . . . ...24 39 sestivaria ... . 1 2 boreata . . . ...25 40 affinitata .26 48 brumata ... ...25 40 albicillata .45 71 brunneata ... 8 11 albipunctata .80 51 caesiata ...38 61 albulata ... .26 42 callunaria ...28 46 alchemillata .26 43 cambrica ... ...24 40 alniaria ... . 7 8 campanulata ...27 45 alternata . 8 12 candidata . . . ...24 39 alternata (sociata) .44 70 carbonaria ... 8 10 amata .23 36 carpinata . . . ...87 60 annulata ... .23 37 castigata ... ...31 52 angelicata 45 certata . . . ...83 55 angularia .12 18 cervinaria ...44 71 apiciaria ... . 6 7 christyi . . . ...25 41 aquata .35 57 chrysoprasaria ... 2 4 arceuthata .28 47 cinctaria ... ...11 16 assimilata .30 49 circellata... ...17 28 associata ... .40 63 clathrata ... ... 8 11 atomaria ... .13 16 cognata . . . ...42 67 atrata .48 78 comitata ... ...41 66 aurantiaria .13 21 concinnata ...40 65 autumnalis .43 68 consignata ...27 45 autumnaria . 4 8 consonaria ...12 19 autumnata .25 41 consortaria ...11 16 aversata .19 30 constrictata ...27 44 badiata .46 74 - contiguaria ...18 28 belgiaria ... .15 24 coracina . . . ...18 15 berberata ... .36 59 coronata ... ...32 54 betularia ... .10 14 coronillaria 1 bicolorata .41 66 corylata . . . ..Al 66 bidentata ... . 4 7 crepuscularia ...13 19 bifasciata ... .26 42 cucullata . . . ...45 71 bilineata .46 75 curzoni . . . ...28 46 INDEX OF SPECIES— (Synonyms in Italics). debiliata ... Plate ...32 Page 53 griseata . . . Plate ...48 Pag« 78 decolor at a ...26 43 grossulariata ...16 26 defoliaria . . . ...14 21 halterata ... ...37 59 degeneraria ...19 30 hastata . . . ...33 55 denotata ... ...27 45 haworthiata ...32 53 designata ...46 73 helveticaria ...28 47 didymata . . . ...26 42 herbariata ...18 29 dilutaria . . . ...18 29 hippocastanaria ... 5 20 dilutaria ... ...18 29 hirtaria . . . ...10 14 dilutata ... ...25 41 hispidaria... ...10 15 dimidiata . . . ...17 27 holosericata ...18 29 distinctaria ...27 44 humiliata . . . ...18 29 dodoneata ...28 46 imitaria . . . ...22 34 dolabraria ... 3 5 immanata ...40 65 dotata ...40 64 immorata... ...21 33 dubitata ... ...36 59 immutata... ...21 34 elinguaria ... 4 8 indigata . . . ...30 50 emarginata ...18 28 innotata ... ...28 46 emutaria ... ...22 35 inornata ... ...19 30 ericetaria . . . ...12 18 insigniata... ...27 45 erosaria . . . ... 7 9 interjectaria ...18 29 exanthemaria ...20 31 inturbata . . . ...31 52 exiguata ... ...27 45 irriguata ... ...30 49 expallidata ...29 48 isogrammaria ...32 53 extensaria ...29 48 jasioneata ...27 45 f agaria ...15 24 jubata ...12 18 ferrugata . . . ...45 72 juniperata ...42 66 filigrammaria ...25 41 knautiata ...29 49 fimbrialis . . . ... 2 3 lactearia ... ... 2 3 firmata . . . ...42 67 lapidata . . . ...35 58 flavicinctata ...38 61 lo.pponaria ...10 14 flavofasciata ...26 43 lariciata . . . ...28 47 floslactata ...22 34 ieucophearia ...13 20 fluctuata ... ...45 72 lichenaria... ...11 17 fluviata . . . ...47 75 limbaria . . . ... 8 12 f raxinata . . . ...28 46 limitata . . . ...47 76 fuliginaria ...23 38 linariata ... ...31 52 f ulvata ...41 66 linearia . . . ...28 37 f umata ...21 33 lineata ...15 23 f urcata ...43 68 liturata . . . ... 8 11 fuscantaria ... 6 9 lunaria . . . ... 5 6 galiata ...44 70 luridata . . . ...12 19 gemmaria ...12 18 luteata ...24 39 gilvaria . . . ...15 22 luteolata ... ... 6 7 glabraria... ...12 18 macula ria... ... 3 4 goosensiata ...29 49 mancuniata ..» 28 xi. INDEX OF SPECIES— (Synonyms in Italics). margaritata Plate ... 9 Page 12 plumbeolata Plate ...31 Page 51 marginepunctata ...22 35 polycommata ...37 60 marginaria ...13 20 polygrammata ...47 73 marginata ...16 24 populata . . . ...39 63 miata ...40 64 porata ...23 36 minorata . . . ...26 42 porrinata . . . ... 2 3 minuiata . . . ...29 49 procellata... ...34 56 montanata ...45 72 prosapiaria ... 9 13 multistrigaria ...38 61 pruinata ... ... 1 1 munitata . . . ...46 78 prunaria ... ... 9 12 muricata ... ...17 26 prunata . . . ...39 63 murinata . . . ...24 38 pulchellata ...31 52 myrtillata ...15 23 pulveraria ... 3 5 nanata ...28 46 pumilata ... ...32 54 nigrofasciaria ...46 74 punctaria . . . ...23 36 notata ... 8 11 punctularia ...11 17 obfuscaria ...15 23 puppillaria 37 obeliscata... ...42 67 purpuraria ...23 37 oliquaria ...48 78 pusaria . . . ...20 31 obliterata ...24 39 pusillata ... ...27 44 oblongata ...27 44 pustulata . . . ... 1 2 obscuraria ...15 23 pygmaeata ...32 52 ocellata . . . ...89 63 pyraliata ... ...40 64 ochrata . . . ...17 27 quadrifasciaria ...46 74 ochrearia . . . ...15 23 quercinaria ... 6 8 olivata ...38 61 rectangulata ...32 53 ononaria ... ... 1 2 remutaria ...22 34 orbicularia ...23 37 repandata ...12 17 ornata ...21 33 reticulata . . . ...41 65 paisley pug 50 rhammata ...86 58 paludata ... '^48 77 ribeata ...12 19 pantaria . . . ...16 25 rivata ...44 69 papilionaria ... 1 1 roboraria . . . ...11 16 paralellaria ... 5 7 ruberata ... ...48 68 pectinitaria ...38 61 rotundaria ...20 31 pedaria . . . ...10 15 rubidata . . . ...44 70 pendularia ...23 37 rubiginata ...22 35 pennaria . . . ... 7 9 rubricata . . . ...22 35 perochraria ...18 28 rufata ...48 78 petraria . . . ... 5 6 rupicapraria ...14 22 picata ...34 56 rusticata ... ...19 30 pictaria . . . ...14 22 sacraria . . . ...28 35 pimpinellata ...30 50 sagittata ... ...88 56 piniaria . . . ... 9 13 salicata . . . ...89 62 plagiata . . . ...48 77 sambucaria ... 8 4 plumbaria ...47 76 satyrata . . . ...28 46 INDEX OF SPECIES— (Synonyms in Italics). Plate Paee Plate Page scabiosata ...28 47 tersata ...35 57 sexalisata . . . ...87 59 testaceata ...24 39 silaceata ... ...41 65 testata ...39 63 simulata ... ...42 67 tetralunaria ... 5 5 siterata . . . ...40 64 togata ...32 53 smaragdaria ... 1 2 trifasciaria ...43 68 sobrinata . . . ...27 45 trigeminata ...17 27 sociata . . . ...44 70 trisignata. . . ...29 48 sordidata... ...43 68 tristata . . . ...44 69 sparsata . . . ...33 54 truncata ... ...40 65 spartiata ... ...48 77 unangulata ...34 56 straminata ...17 27 undulata ... ...33 55 strataria ... ...10 13 unidentaria ...45 73 stevensata 45 unifasciata ...26 42 strigaria . . . ...21 34 valerianata ...30 50 stngata . . . ... 1 2 variata . . . ...42 67 strigilaria ...21 32 vauaria . . . ... 8 11 strigillaria ...15 22 venosata ... ...32 53 subciliata ...31 52 vernaria ... ... 2 4 subfulvata ...29 48 vetulata . . . ...36 58 subnotata... ...31 51 viretata . . . ...37 60 subsericeata ...17 28 virgata ...47 75 succenturiata ...29 48 virgaureata ...30 50 suffumata ...39 62 virgularia. . . ...18 29 sylvata ...16 25 viridaria ... ...38 61 sylvata . . . ...24 39 viridata . . . ... 1 3 syringaria ... 7 9 vitalbata ... ...35 57 tamarisciata 46 vittata ...46 74 tfeniata . . . ...26 43 vulgata . . . ...30 49 temerata ... ...20 31 zonaria . . . ...10 14 tenuiata ... • ...31 51 PREFACE. The cordial reception extended to the " Genitalia of the British Noctuida," published in 1909, has induced me to launch on the sea of scientific literature a second volume dealing with the interesting and important study of the genitalia of the Lepidoptera. The former volume, I believe, has been the means of directing attention to the difficult family of the Diptera, and Prof. Newstead is now doing good work among the Tse Tse flies, while the genitalia of other groups are being studied. In presenting this account of the genitalia of the Geometridce, I have had the advantage of the criticisms passed on the previous work, and thus have been enabled to make good the omissions that it contained, and, I trust, also to make the present volume more complete. The publication in the "Noetuidse" of names for the different parts of the genitalia has produced a good deal of interest in this department of our study, particularly with reference to the standing of the names under the law of priority, and as a result several employed in the above work have had to fall before others previously given. Dr. J. McDonnough, in the " Canadian Entomo- logist," for June, 1911, vol. xliii., No. 6, has attempted the difficult ask of unravelling the nomenclature and of giving a complete list of the names which for the future should be employed. With many of his conclusions I agree, and, so far as our present knowledge will permit, I have tried to make use, in the descriptions of the parts, of all now established names. I would here like to impress upon those working on the genitalia the necessity of using xiv. definite names for the parts, rather than such obscure phrases as " medio dorsal process" and the like, which to the bewilderment of the reader frequently occur in what would otherwise be valuable contributions to the study of the genitalia. During the course of my preparations for the present work I have been most fortunate in having the indefati- gable assistance of niy valued friend, the Kev. C. E. N. Burrows, F.E.S., to whose generous co-operation I owe more than I can express, and to whom the production of this work in a comparatively short period of time is largely due. During the past six years our correspondence has been almost a daily one, indeed it was an unusual event not to find a letter from him on the breakfast table, and often a second would arrive during the course of the day. As was natural in such an investigation as this, we could not always see eye to eye, and I cannot say too much of Mr. Burrows' patience, whilst his kindly nature was revealed in the care with which he explained his views, illustrating his points with the neatest of little sketches, until at last agreement was reached. When unusually knotty questions arose and letters failed to elucidate matters, it was often necessary for me to journey down to see him. On all such occasions I was welcomed at his home with its wonderful garden where he has taken so many rare and notable species. There Mr. Burrows has again and again proved himself to be not only a man of science, but also a most genial host, and my visits will always remain as red letter days in my memory. I rejoice to take this opportunity of expressing my deep debt of gratitude for all that his friendship has meant during these six years of unceasing co-operation. In the course of preparing the present work, Mr. Burrows and I have each made a complete set of mounts of all the species of the Geometrida, and in a large number of cases several mounts of the same species. This has been an additional safeguard in securing accuracy, besides conclusively proving how small is the variation that exists between different mounts of the same species. The first sketches were made by Mr. Burrows from the most perfect of the mounts by means of the Camera Lucida, whilst the descriptions were written with the aid of all the material at our disposal. As the females showed well marked differences, the salient features of the genitalia in this sex have been added (on the left of each figure), and they have helped to elucidate the relationship between species where the male organs exhibited great divergence of form. I am still of the opinion that drawings are preferable to photographs, as the latter, by showing too much, make it difficult to grasp the significant points. As the penis forms an important, in many cases the most important, structure for purposes of differentiation, drawings of this organ have been added (on the right of each figure), but I would warn workers that it is extremely 'difficult in this case to get uniformity of position. I have again adopted the plan of placing the name of the species beside each drawing, and I regret that ibis has not been done by more writers, whilst I am glad to be able to refer to a notable exception in Dr. Eltringham's splendid article on the group Acraea, published in the Transactions of the Entomological Society of London, 1913. The methods of preparation were fully described in the " Noctuidse," and to this work I would refer my readers. The only improvement I can suggest is in refer- ence to staining, which is of great assistance. So far we have found a difficulty in obtaining a permanent stain, but the cause of the failure seems really to be due to the imperfect removal of the Caustic Potash. On the suggestion of Mr. Burrows, citric acid was employed in the washing process with very good results. If this point be attended to, Stevens' green ink will be found to be a very satisfactory stain. xvi. For the supply of specimens both rare and local, I would again express my warmest thanks to our British lepidopterists, and particularly to Messrs. Louis B. Prout, J. H. Harrison and Dr. E. A. Cockayne, whose generous help has materially assisted the production of the present volume. For the generic and specific names Mr. Louis B. Prout has made himself almost entirely responsible. I would also like to state that the Rev. J. W. Metcalfe, F.E.S., has associated himself with me in the work, and that it is my intention to publish an account of the Genitalia of the Tortricidce at no distant date, for which volume Mr. Metcalfe has undertaken the drawings. F. N. PIERCE. THE ELMS, DINGLE, LIVERPOOL. 1914. SYNOPSIS OF THE INTRODUCTION, I. THE MALE GENITALIA. General Statement. A. THE EXTERNAL PART. (i) The tenth segment. The Uncus. The Socii. The Gnathos. The Anus. The Transtilla. (ii) The ninth segment. TBe Tegumen. The Saccus. The Valvse. Costa, valvula, sacculus. The Harpe. TKe Furca. (iii) The eighth segment. The Octavals. The Cerata and Mappa. The Abdominal plate, (iv) The seventh segment. The Coremata. B. THE INTERNAL PART. (v) The Penis. The ^Edoaagus. The Anellus. The Juxta. The Cristae. The Anellus lobes. The Calcar. The Canaliculus. The Manica. xviii. The Labides. The Ductus ejaculatorius. The Vesica. The Cornuti. II. THE FEMALE GENTTALIA. General Statement, (vi) The Ovipositor. The Ostium. The Ductus Bursae. The Bursa Copulatrix. The Signum. THE INTRODUCTION. The study of the whole order of Lepidoptera has con- vinced me that the genitalia throughout the order have been developed on the lines of one common plan, which has been so far modified as to suit the requirements of each individual group. Some of the parts may be atrophid or even absent, others decorated with elaborate armature, others much displaced, others now free, now fused together, but the main features remain common to all the groups. Thus it is true to say, though this general statement needs some qualification, that the main characters of the male genitalia in the Geometridce are very similar to those in the Noctuidce. The different organs may be conveniently divided into two parts, the external and the internal. This division is well shown in the curious specimen of Hydrcecia, captured by Mr. Burrows, the body of which was prepared by him and figured in the " Entomologist's Record," Vol. xxiv., p. 171. The external part consists of : — (i) The Uncus, which is attached to the dorsal region of the tegumen. (ii) The Tegumen, which consists of the ninth and possibly part of the tenth abdominal segments, (iii) The Saccus, which is a development of the base of the tegumen. (iv) The Valvce, which form a pair of lateral flanges, articulated to the tegumen. (v) The Anus with its armature, (vi) The Transtilla, a cross-bar uniting the costae of the valvse. The internal part consists of The Penis with its armature. The seventh and eighth abdominal segments also possess characters which I consider to be of sufficient importance for inclusion in the descriptions of the text. sex. THE TENTH ABDOMINAL SEGMENT. In the present state of our knowledge, it is very difficult to say what exactly represents the tenth segment, it has even been questioned whether it exists at all. Zander states that he has been able to discover very little of the wall of the thirteenth (tenth abdominal) segment as it remains membraneous and hidden beneath the twelfth (ninth abdominal) segment, being withdrawn beneath it. He further concludes from a study of the development within the pupa that the uncus and scaphium (my gnathos) are secondary appendicles of the tenth segment. How- ever, for the present I can only leave the question undetermined. THE UNCUS.— Gosse. Attached to the dorsal portion of the tegumen is the uncus. This, in the Geometrida, is generally produced in the form of a hook (Cepphis advenaria, pi. Hi), usually single, but sometimes bifurcate. It is, however, subject to much variation, being in some species merely a thin projection (Aspilates, pi. xv.) and in others practically absent (Acidalia, pi. xxi.). THE SOCIL— Pierce. On either side of the base of the uncus, on the ventral surface there is often a hairy pad. When this pad is developed into a weakly chitinised hairy process I have termed it The Socius (Hemithea, pi. i) (Wytsman Genera Insectorum Hemitheinse, p. 6). THE GNATHOS.— Pierce. Springing from the base of the uncus, where it is hinged, there is often a free ring, enclosing the anus and, if present, the subscaphium, having a central curved lip generally decorated with scobinations, spines, or sqnamous markings. Sometimes the parts other than the curved lip are fused to the tegumen, from which, in this case, the tip ***. appears to spring. This organ we have called The Gnathos (Ourapteryx, etc., pi. Hi.) (Wytsman, I.e. p. 6). It has been mistaken for the Scaphium of the Papilios, with which, however, it has no connection. It was figured in the " Noctuidae " in the genus Brephos, but not named. This organ has appeared to me to be of such import- ance as to form two primary divisions of the Geometridce, according as it is present or absent, and for these divisions I propose the names Gnathoi and Agnathoi. The species falling within the Gnathoi, but having the gnathos rudimentary or atrophid, are so few that they may be left out of consideration. THE ANUS. At the base of the uncus on the ventral surface of the tegumen is an opening through which passes the anal tube. In the Agnathoi this tube is very long and is decorated with spines (Perizoma didymata, pi. xxvi.}. Attached to the under side of the tube is a thickened chitinised process, generally taking the form of a plate, but sometimes that of a hook, which I have previously named The Subscaphium (" Noctuidse," p. 13). THE TEANSTILLA.— Pierce. From the bases of the valvee arises a cross-bar which I term The Transtilla (Ennomos autumnaria , pi. iv.). The cross-bar may be incomplete, the opposing arms not uniting, and whilst it is often simple, it is capable of great development, occasionally producing free arms, and becoming in the Tortricida a highly complex part. THE NINTH SEGMENT. This segment is very probably represented by the tegumen. It is generally composed of thin chitine, but it sometimes resembles a normal segment. In the Eupitheciince it is introverted and holds the genitalia within the eighth segment, as in a bag. In this group also it bears small coremata or membraneous sacs covered with hairs (Gymnoscelis pumilata, pi. xxxii.). In the AcidaliincB the coremata consist of .pencils of long hairs (pi. xxi). I give further details of this segment under the next heading. THE TEGUMEN. — Buchanan White. The base of the tegumen rests in the plane of the ventral surface, whilst the upper part curves anally until it lies longitudinally in the plane of the dorsal surface. It may perhaps be best described as a complete ring of chitine, dorsally broad, ventrally narrow, with much strengthened edges, and it is articulated laterally in the middle, enabling the upper half to be thrown backwards towards the head. The penis and its armature are con- nected at this articulation. THE SACCUS.— Bethune Baker. The basal portion of the tegumen, which I called the Vinculuin in the "Noctuidae," had already been named The Saccus by G. Bethune Baker (Trans. Ent. Soc. London, 1891), and this latter name I accordingly now adopt. Its form is generally that of a pouch or bag, but in some species it is incomplete, the two sides of the tegumen failing to meet (Deuteronomos erosaria, pi. mi.). THE VALV^E.— Burmeister. Below the articulation of the tegumen on either side is hinged a lateral flange which was called the Harpe in the "Noctuidse." I now adopt the name of Valva used pre- viously by Burmeister. Kambur, in 1838, employed the word pinces. In the Geometridce the valva is often simple, but occasionally possesses a spiny armature, by no means as constant in form in this family as in the Noctuidce. I have therefore united the parts of this armature, where it occurred, under Gosse's name, The Harpe. The valva may be divided into three parts, which are usually more or less fused together, but are sometimes separated and free. XXtil. To these parts I have given the names, The Costa, The Valmda, and The Sacculus (Them, pi. xlii.). THE COSTA.— Pierce. The costa or upper margin of the whole valva is generally thickened. It is occasionally decorated and may take the form of a free arm (Xanthorhce montanata, pi. xlv.) or of a free spatulate plate (Ortholitha bipunctaria, pi. xlvii.), whilst it sometimes possesses a branching arm in the middle, which I term The Costal Arm (Angerona prunaria, pi. ix.). THE VALVULA.— Pierce. The central part of the valva, lying between the costa and the sacculus, I call The Valvula. It is in most cases composed of thin semi-transparent chitine, and is covered more or less with hair. As a rule the valvula is united to the costa and sacculus, but sometimes it projects free. Its outer margin is subject to extreme modification and ranges from an even curve to a deeply emarginate one. THE SACCULUS.— Pierce. The inner, or as drawn in the figures the lower, por- tion of the valva has been called by me, in the "Noctuidae," The Sacculus. This part invests the base of the valva and is often extended on its outer margin into a free arm (Asthena, pi. xxiv.). THE FURCA.— Pierce. The two sacculi may project centrally quite apart from the valvse and are sometimes fused together. To the organ thus formed I have given the name of The Furca (Ennomos autumnaria, pi. it?.). THE EIGHTH SEGMENT. This segment bears no spiracles. The anal edge of the sternite may be scalloped, and is often otherwise modi- fied. Sometimes it is hardened and produced in a single, occasionally scobinate, protruberance, or it may bear a pair of such protruberances which have been termed The Octavals (Oporinia, pi. xxv.) (Seitz. Macro-lepidoptera of the World, iv. p. 51). CERATA AND MAPPA.— Pierce. In the Acidaliince the eighth sternite consists of a chitinous plate which is internal for about half its length and then coming to the surface is continued in two pointed arms, which I name The Cerata (Acidalia, pi. xxi.). These show almost constant asymmetry, the right being com- monly larger and more fully developed than the left. In the natural position the cerata lie in the lateral grooves of the body and in most cases project beyond its anal extremity. Covering the cerata is a loose semi-circular flap, clothed with long narrow scales. This flap I term The Mappa. ABDOMINAL PLATE.— White. In the Eupitheciince there is a plate, similar to that which bears the cerata, to which attention was drawn by Dr. Buchanan White, who figured it in a certain number of species in the " Entomologist," Vol xxiv., p. 129, 1891. Dr. Petersen has also figured the abdominal plate in his " Eupithecia," but as I read the preparations rather differently, I have added figures of this organ (Eupithecia, pi. xxvii.). A similar sternite plate is found in Cato- gramma, a Central American Nymphalid, in Pero, a South American Geometrid, in the Pyralidce, and probably also in other groups. Under natural conditions the genitalia are withdrawn beneath this plate. THE SEVENTH SEGMENT. This is sometimes highly developed, being produced on either side as an extensile pouch or bag clothed with hairs, and bearing a spiracle. These bags are The Coremata (Wytsman Gen. Ins. Hem. p. 6), to a form of which I have referred above as occurring on the ninth segment in the Eupitheciina . The hairs are variously arranged and there may also be present large spatulate spines (Ochyria quadrifasdaria, pi. xlm.). I now proceed to consider the internal part which con- stitutes the sexual organ, remarking that the central area is extremely complex, and that in some cases it is very diffi- cult to allocate the various parts on any uniform system. The central organ is The Penis, which emerges from a circular cone, The Anellus. This cone is attached laterally to the costal fold of the valvulee, dorsally to the transtilla, and ventrally to the base of the valvae. In the Geometrida the penis is retractile and is attached to the edge of the anellus by a membraneous tube, The Manica. The anellus is subject to great modification, and bears organs to which I have given distinctive names as a helpful aid in differentiation. THE PENIS. As this name has been given to various parts by different writers, I think it advisable to state definitely that the penis is the whole central organ. It consists of : — (i) The sfldceayus, a strong tube or trough which is kept in position in the centre of the tegu- men by means of the manica. (ii) The Manica, a sleeve- shaped eversible membraneous tube surrounding the aedceagus. (ii) The Anellus, the funnel-like cone from which the sedoeagus protrudes, (iv) The Vesica, which with its armature The Cornuti. is extruded into the bursa of the female during copulation, (v) The Ductus Ejacu- latorius, which, entering the aedceagus just above its blind end, runs throughout its length, and is continued in un- broken connection with the vesica, the two together form- ing the seminal duct. xxvt. THE ^DCEAGUS. This, in most cases, is a slightly curved stout tube, in some, however, the curvature is great, whilst in others the tube is slender and needle-like. Occasionally it is decorated at the orifice with spines, and rarely it is branched. THE ANELLUS.— Pierce. This cone-like tube bears on its ventral surface a shield or plate, called The Juxta, which is commonly decorated on either side by a pad covered with hairs or scales which I term The Cristce. The cristse are subject to great modifi- cation as they may lie flat on the skin of the juxta or they may be more or less raised so as to form papillae (Ectropis, pi. xiii.). The anellus may also be extended into two lateral lobes which are termed Anellus lobes. These lobes are in some cases united so as to produce a single arm of varying length which is called The Calcar. (Xanthorhoe, pi. xlv.). The upper edge of the juxta itself may be produced centrally in the form of a long lip or spout, which may possibly act as a guide to the penis. This lip I call The Canaliculus (Ortholitha, pi. xlvii.). THE MANICA.— Pierce. This name is applied to the eversible membraneous sleeve in which the sedceagus lies. The basal part closely invests the blind end of the oedoeagus to which it is fused just above the point of entrance of the ductus ejaculatorius. When the penis is not extruded the manica lies wholly within the anellus, but during extrusion it is drawn out and may be seen surrounding the aedceagus. The manica may become chitinised, and is often decorated with spines, scobinations, teeth, or hooks (Xanthorhce ferrugata, pi. xlv.}. THE LABIDES.— Pierce. Springing from the points of union of the transtilla XXVlt. with the costse, there may arise two long arms, each bear- ing a soft hairy pad, and united together by a thin mem- brane. These arms I term The Labides (Eupithecia, pi. xxvii.). THE DUCTUS EJACULATORIUS. This with the vesica forms the seminal duct. Passing from the vasa differentia it enters the aedceagus just above its blind end. Thence it runs throughout the length of the acdoeagus until it unites with the vesica (Carsia paludata, pi. xlviii.). THE VESICA.— Pierce, " Noctuida." This is the extrudible part of the seminal duct which, (Juring copulation, penetrates into the bursa of the female. It is generally scobinate and is often armed with remark- able spines called The Cornuti (Deuteronomos fuscantaria, pi. vi.). THE CORNUTI.— Pierce, " Noctuida." These are very variable in character. Usually they are strong spines grouped in clusters, but occasionally there is only a single spine. Very rarely there are found articu- lated spatulate spines of markedly different formation. During copulation these are transferred to the bursa, but I am quite unable to say what function they perform. In the Geometridce we have found this form only in Gnophos obscuraria, but in many groups of the Tortricida it is general. Dr. Chapman has recorded a similar occurrence in Pyraustra in the form of a single specialised spine (" Ento. Eecord," Vol. xxv., p. 106, 1913). When stating the number of the cornuti in any species it must be understood that only the approximate number can be given. THE FEMALE. The genitalia of the female consist of : — (i) The Ovipositor, (ii) The Ostium, attached to which there may be an Operculum. (iii) The Ductus Burses with its arma- ture, (iv) The Bursa, on the armature of which the most important feature is The Signum. The egg after leaving the branched ovaries and before entering the ovipositor is fertilised by the entrance of the male sperm at its micropyle. The spermatazoa having been received during copulation into the bursa are thence discharged through a tube called The Ductus Seminalis on to the eggs as each passes through the vagina (Calliclystis debiliata, pi. xxxii.). Usually two other tubes enter at the same point, of which one undoubtedly furnishes the adhesive secretion by which the eggs are fastened to the food plant. Should the female be killed after the fertilisation of an egg, but before it has been laid, such an egg will produce a larva, which being unable to escape perishes, and its existence is only discovered on preparing the body of the parent for the microscope. Hence no doubt the legend of viviparous Lepidoptera. I have found such larvae in a large number of species. THE OVIPOSITOR. The form of ovipositor general in the Geometridce consist of a pair of lobes set with bristles. The retractile or telescopic form, developed in order to reach far into a crevice, as for instance a rolled-up grass stem, also occurs. Further, there is a tubular form, and I draw especial attention to yet another which is elaborately decorated with long thickened hairs and scales. This last form I call Floricomus, it is rare in the Geometridce, occurring only in Theria rupicapraria and Aleucis pictaria, pi. xir., but it is found also in Cosmia amongst the Noctuidce, and is by no means uncommon in the Tortricidce. THE OSTIUM. The ostium is the external opening of the Ductus Bursae. It is directly attached to the segmental rods which are sometimes dorsally united by a hard chitinous band. When this is the case I speak of the ostium as being en- circled. Occasionally there is a covering or flap which appears to close the orifice and which I term The Operculum (Macaria clathrata, pi. vhi.}. Surrounding the ostium there may also be a flattened plate, and in the case of the AcidaliincK there is a loose apron, corresponding to the mappa of the male, which hangs over the ostium and which I have named The Instita. THE DUCTUS BUKS.E. This usually consists of a tube of varying length, lead- ing from the ostium to the bursa. In many cases it is so closely united to the bursa that it is practically impossible to say where the one ends and the other begins, or even to decide whether they are really separate organs. The ductus bursse is often armed with spines (N othopteryx , pi. xxxvii.). THE BUESA COPULATRIX. This is usually subglobular, and consists of thin chitine which may either be scobinate, or drawn into numerous points forming star-shaped folds on the outer surface. When the latter decoration completely covers the surface I say that the bursa is Instrate (Eupithecia pimpinellata , pi. xxx.), when the surface is only partially covered I speak of the bursa as Pannicular (E. albipunctata, pi. xxx.). When the bursa possesses a distinct hard chitinous patch on the surface I term this patch The Signum. THE SIGNUM.— Pierce. This is an important character and extremely variable. It may be merely a simple scobinate patch or it may be an elaborately spined prominence (Gonodontis bidentata, pi. iv.). A description is given in the text wherever it occurs. NOTE. — The numbers placed in the text after the specific names indicate the number of mounts, male and female respectively, made of that species. Classification of the British Geometridae based on the structure of the male and female Genitalia. GEOMETRIDAE. GNATHOI. Geometrinae. Valva elongate generally simple. Uncus bifurcate or if single with protruding socii. In situ the uncus is folded over the gnathos. Gnathos rarely strong. .ZEdceagus stout or more generally pistillate. Eighth segment developed often scobinate. Coremata on ninth segment. Hipparchis papilionaria, L. 6—3 Valvula peaked, narrow; costal fold short; sacculus ex- tended. Transtilla large rounded plates. Uncus bifid, widely divided. Gnathos point long, weakly scobinate. ZEdceagus pointed. Saccus lobed at centre, with central inward projection. Margin of eighth sternite bilobed. Ostium small. Ductus bursae weak. Signum small, double pointed. Pseudoterpna pruinata, Hufn. 6—2 Valvula narrow; harpe raised, long, heavily spined. Uncus bifurcate", pads hairy. Gnathos squared, scobinate. ^Edceagus narrowed towards tip, orifice with long serrated arm. Saccus pointed. Coremata short, on ninth segment. Ostium weak. Ductus bursae thickened. Bursa elongate. It has been questioned if coronillaria, Hb. is not a 2 melanic form of this species. In the two male specimens we have examined, there appears a difference in the scobinations of the gnathos, which in coronillaria are more heavily dentate, and the serrations on the arm of the ffidceagus of pruinata extend over a larger space. In the female the ductus bursas is stronger. Aplasta ononaria, Fues. 2—2 This species is related to Pseudoterpna pruinata. The uncus being very similar also the harpe of one valva. Valvse asymmetrical, right with harpe heavily spined (valvae accidentally reversed in figure, Plate I.), left simple, without harpe. Uncus bifurcate. Gnathos trilobed, scobinate. ^Edoeagus pistillate widened above. Saccus bluntly pointed. Small coremata on ninth segment. Ostium produced. Signum a deep ridge. Comibaena pustulata, Hufn. 12—3 Valva fused; valvula rounded; costa arched, inner margin dentate; sacculus fused at base, elongate plate. Uncus bifid, curved; socii strong, head geniculate, longer than uncus. Gnathos atrophid. .ZEdoeagus pistillate, scobinate. Anellus weak, hairy. Saccus squared, centre deeply indent. Eighth sternite produced ventrally, slightly bilobed, strongly dentate. Ostium weak, plate scobinate. No signum. Euchloris smaragdaria, Fb. 14—4 Valva fused below; costal fold long; sacculus fused to valvula. Uncus bifid; socii large, tapered. Gnathos separate, broad, weak. ^Edceagus pistillate, pointed. Saccus squared, deeply indent. Eighth sternite produced ventrally, bilobed. Ostium strong. Hemithea aestivaria Hb, strigata, Mull. 8—3 Valvula peaked ; costal fold long, dentate near base ; sacculus spined. Uncus curved, tapered; socii long. 3 Gnathos atrophid. J^dceagus pistillate, pointed. ' Saccus pointed. Coremata extensile, on ninth segment. Ostium bilobed, with two hairy papillae. Ductus bursae thickened, ribbed. Chlorissa viridata, L. 12—3 Valvula peaked; costa produced, pointed, scobinate, in- closing the base of a patch of long clavate scales ; costal fold long produced in free rounded arm. Uncus bulbed at base; socii long. Gnathos atrophid. ^doeagus pistillate. Cornuti short in patch. Saccus large, central lobe. Eighth sternite produced ventrally, edge dentate. Ostium with two hairy papillae. Bursa very long. Porrinata, Zel. 2—2 This species has been recorded by Hodgkinson (Entomo- logist 1871). It is so nearly like viridata, it is possible it has been overlooked. The genitalia are very similar but porrinata may at once be distinguished by the eighth sternite, which is scobinate. Thalera fimbrialis, Scop. 2—2 This species is included on the capture of a single speci- men, by Charles Capper, at Beachy Head, August 7th, 1902^ Valva partly fused : costa free, edge dentate. Uncus tapered; socii long, wide at base. Gnathos atrophid. ^Edceagus pistillate. Saccus rounded, sides indent. Ostium large, strong, hairy pads at entrance of orifice. lodis lactearia, L. 6—4 Valvula simple, indent semi-transparent on outer margin. Uncus tapered; socii long. Gnathos long, pointed. .Edceagus pistillate. Juxta bilobed. Saccus squared, lobed at centre. Eighth sternite produced ventrally, bilobed, scobinate. Ostium weak. Signum double pointed. A 2 Hemistola chrysoprasaria, Esp. 6—5 vernaria, Hb. Valva broad ; costa short ; harpe weak, raised ; sacculus produced, strong, tapered. Uncus long, parallel; socii nearly length of uncus. Gnathos long, pointed, scobinate. .Edoeagus pistillate; cornuti short, a large and a small band. Saccus squared. Eighth sternite produced ventrally bilobed, scobinate. Ostium elaborate, operculum finely spined. Ductus bursas with two strongly spined discoid lobes. Bursa elon- gate, ribbed. Ourapterygmae. Valva simple. Uncus short. Gnathos fairly well de- veloped, tip free. Furca fused in long rod. Female with long ribbed ductus bursae. Signum stellate. Confined in this country to a single species. Ourapteryx sambucaria, L. 11—4 Valva simple, broad. Furca fused forming a single curved arm terminating in fine spines, always lying to the right, curving to the left. Uncus short, stout tapered, pads hairy. Gnathos strong, broad, tip scobinate. Cornuti many, fine, massed. Ostium weak. Ductus bursse ribbed. Signum discoid, dentate. Ermominae. Valva generally broad. Furca when present fused, forked. Uncus strong. Gnathos strong, dentate. ^Edceagus generally broad and narrowed to a point. Often coremata on ninth segment. In the female signa dentate in varied degree. Pseudopanthera macularia, Dup. 8—5 Valvula narrow, simple, costal apex truncate. Furca long, slender, curved ends deeply dentate on outer edge, free. Uncus long, narrow, pointed, pads raised hairy. Gnathos pointed, with four sharp teeth. ^Edceagus long, small curved thumb at apex. Anellus produced hairy. Saccus squared angularly, centre indent. Coremata short, rounded, extensile, on ninth segment. Ostium weak. Ductus bursae thickened. Signum discoid, dentate. Cepphis advenaria, Hb. 3 — 2 Valva simple. Furca long, curved, spined. Uncus long, narrow, pads raised hairy. Gnathos tip pointed with three or four sharp teeth. JSdceagus stout, pointed. Cornuti three to eight short spines. Saccus bilobed. Coremata short, rounded, extensile, on ninth segment. Ostium produced. Signum weak, angular, dentate. Plagodis dolabraria, L. 4—2 Valvula wider below, outer margin slightly indent; costa almost straight. Furca asymmetrical, left two-thirds of right, spined. Uncus long, slender; pads hairy. Gnathos long, slender, hooked, with four teeth. ^Edoeagus short, stout, pointed. Cornuti double row, converging. Juxta bilobed, rugose. Saccus very wide, centre indent. Bursa subglobular. Signum small, trifid, pierced. Anagoge pulvcraria, L. 6—2 From a genitalic point of view this species is closely related to Plagodis dolabraria in both sexes. Valva peaked, outer margin slightly indent with points on the edge. Furca long, furnished with spines. Uncus long, parallel, pads raised hairy. Gnathos long with four sharp teeth, ^doeagus short, stout, small thumb at orifice. Saccus wide, centre indent. Ostium weak. Bursa small, delicate. Signum weak, circular, containing a harder centre. Sclcnia tetralunaria, Hufn. 2—2 This species is very like bilunaria but may be distinguished by the scobinate gnathos, and the apex of the valva not sharply geniculate. Valvula simple; costa almost straight. Furca curved. Uncus tapered, pads raised hairy. Gnathos pointed, scobinate. rEdoeagus spoon shaped thumb at orifice. Cornuti many, long. Saccus rounded, centre indent. Coremata on ninth segment. Ostium slightly produced. Signum small, irregular, spined. Bilunaria, Hb. 15—4 Valvula simple; costa geniculate before apex. Furca short, two curved arms, variable in thickness in the two broods. Uncus short. Gnathos stout, ctenoid, three or four teeth. ^Edoaagus short. Cornuti long, fine, numerous. Saccus broad, squared, indent at centre. Ostium weak. Signum discoid, dentate, rugose. Lunaria, Schiff. 7—1 Valvula simple; costa short. Furca fused at base, long, pointed, diverging. Transtilla separate, rounded with point. Uncus broad, spatulate. Gnathos short, hooked, with teeth. ^Edoeagus broad, long, cylindrical, with thumb at orifice. Cornuti fine, short, about twelve. Saccus broad, bilobed. Coremata large, on ninth segment. Bursa long, ovate, cylindrical. Signum small, discoid, dentate. Lithina petraria, Hb. 4—2 Valvula simple; costa gibbose. Furca fused at base, not long, scobinate. Uncus large, curved. Gnathos long, tip ctenoid. ^Edceagus stout with thumb. Cornuti strong, numerous, about twenty-four. Saccus rounded. Ostium not strong. Signum ovate, obtusely serrated and scobinate. Pachycnemia hippocastanaria, St. 4 — 2 This species appears related to this group. Valvula simple; costa thickened, truncate. Furca slender, spined above. Uncus broad, cylindrical, trilobed at apex. Gnathos strong, scobinate. ^Edceagus falcate. Cornutus long, lunular, with strong curved base. Saccus rounded, slightly indent at centre. Coremata short, clothed with spatulate, clavate scales, on ninth segment. Ostium simple. Ductus bursae spiral. Bursa irregular. Signum lunate, spined. Epionc paralellaria, Schiff. 4—2 Valvula simple. Uncus long, narrow, tapered, pads raised, hairy. Gnathos pointed, tip dentate. /Edceagus pistillate. Vesica without cornutus. Saccus long, bilobed. Coremata long, delicate, extensile, on ninth segment. Ostium weak, encircled. Signum oblong, rugose. Apiciaria, Schiff. 3—3 Valvula simple. Uncus long, narrow, tapered; pads raised hairy. Gnathos pointed, tip finely dentate, ^doaagus pistillate. Vesica without cornutus. Saccus long, bilobed. Coremata long, delicate, extensile, on ninth segment. Ostium weak, encircled. Signum ovate, rugose, dentate. Opisthograptis luteolata, Dnp. 8—4 Valvula simple. Uncus short, stout, tapered. Gnathos pointed, tip with about six sharp teeth. ^Edoeagus pointed. Vesica thickly spined with minute spines. Saccus rounded. Ostium produced, weak. Ductus bursae ribbed. Gonodontis bidentata, Clerck. 8—6 Valva tapered; costa truncate; costal fold produced in a short arm. Furca curved, slightly serrated at edge. Uncus long, tapered. Gnathos strong, dentate. /Edceagus with a thumb and about eight strong spines at the orifice. Cornuti a band of long spines. Ostium wide, lobed at either side (guides). Ductus 8 burses thickened. Bursa subglobular. Signum discoid, spined. The furca arms are inserted in the ostium, and act as a guide during copulation. Crocallis elinguaria, Tr. 5—2 Valva slightly tapered; costal fold heavily spined on the edge. Furca long, curved. Uncus tapered; pads long, lobed, hairy. Gnathos tips separate, widely apart, concave. ^.Edceagus pistillate, with one or two spines at the orifice. Saccus rounded. Ostium produced, wide. Ductus bursae thickened. Bursa elongate. Signurn rounded, crinkled, very delicate. Ennomos autumnaria, Wernb. 2 — 2 Valva broad; costa produced, gibbose. Furca long, fused, bifurcate. Uncus broad, spatulate. Gnathos dentate. ^Edoeagus spined at orifice. Cornuti few, short. Saccus squared. Ostium wide, strong. Bursa subglobular. Signum elongate, ovate, spined. Quercinaria, Hufn. 8—5 Valva simple, heavily spined; costa produced, pointed. Furca fused, bifurcate, arms lying close together. Uncus long, tapered. Gnathos weak, tip stronger, slightly scobinate. ^doeagus narrow towards apex, crescent of small spines at orifice. Cornuti five or six spines. Saccus rounded. Ostium strong. Signum weak, irregularly pointed. Deuteronomos alniaria, L. 2—2 Valva peaked, median spines; costa short. Furca fused, short, indent above. Uncus long, tapered; pads raised hairy. Gnathos very broad, squared, spined. .ZEdreagus short. Cornuti many. Saccus pointed. Ostium wide, strong. Signum diamond shaped, spined, small. Erosaria, Bork. 2—2 Valva peaked, median patch of spines. Costa short, wide. Furca fused, bifurcate. Uncus tapered, pads hairy. Gnathos rounded, heavily spined both at the tip and along the entire width, ^doeagus cylindrical. Cornuti nine short, four long spines. Saccus divided, two ends of ring of tegumen not united. Ostium produced, bilobed. Ductus bursse ribbed. Signum discoid, crinkled. Puscantaria, Haw. 3 — 3 Valva short, heavily spined; costa short. Furca completely fused in broad plate. Uncus hooded, short, broad; pads raised, hairy. Gnathos broad, squared, scobinate. ^Edceagus short, geniculate. Cornuti three. Saccus rounded, weak. Ostium wide, produced. Signum small, irregular, rugose, delicate. Hygrochroa syringaria, L. 10—4 Valva rounded; costa pointed at apex. Uncus short, bilobed. Gnathos separate, arms long, heavily scobinate. ^Edoeagus large, stout, cylindrical. Cornuti strong, band of about fifteen spines. Saccus wide, rounded, bilobed. Ostium wide. Ductus bursse ribbed. Bursa globular, rugose. Colotois pcnnaria, L. 3 — 3 Valva wider below; costa produced, thickened throughout; from base across the valva and entirely round outer margin thickened, intervening angular portion, semi-transparent. Furca fused, widely bilobed. Uncus bifurcate, slightly asymmetrical. Gnathos absent. ^Edceagus narrow, geniculate. Cornuti two to three strong. Saccus rounded. Ostium wide. Ductus bursae short, narrow. Bursa subglobular. 10 Macarinae. A well marked group, but a difficult one to locate; the large sized signum, discoid and stellate, shows close relationship to Ennomince, Bistonince, and some HybernincB. Carbonaria, Cl. and limbaria, F. must be included; each of these species is closely allied to the other species which we have included and possibly forms a subgenus. Carbonaria has the distinctive uncus and the octavals, but lacks the peculiar pointed form of sedceagus. Limbaria has the peculiar pointed aedoeagus, but the cornuti are different and it lacks the distinctive uncus and octavals. General description : Valvula weak, much reduced; costa extended; sacculus extended set with more or less than three papillae, first at the junction of the costa and valva, second near the distal end of the sacculus, third on the inner edge of the sacculus. Uncus has a pair of stout spines dorsally at the apex. Gnathos pointed, strong. .ZEdoeagus pointed. Cornuti rounded patch of overlapping scobinations. Eighth sternite cleft, forming octavals. Ostium is peculiar, possessing a hinged lid which completely closes the orifice, the operculum. In the plate containing clathrata we give a drawing showing the ostium open and closed. The signum is always discoid, stellate, generally of large size. In clathrata this varies considerably. Some of the characters appear to connect this group with the Abraxintf, e.g. the rose thorn sedoeagus of clathrata, and the gnathos of limbaria. Macaria carbonaria, Clerck., L. 3—3 Valvula small; first papilla only. ^Edceagus stout, dentate above. Cornutus absent. Saccus rounded. Octavals cleft, shallow. Ostium weak. Signum discoid, obtusely serrated and spined. 11 Clathrata, L. 6—23 Valvula ample, first papilla only, large. ^Edceagus pointed, with rose thorn. Cornuti numerous, short spines in band. Saccus rounded. Octavals wide, but not deeply cleft, projecting tips hardened. Ostium with operculuiu. Signum discoid, stellate, variable, inter se. Vauaria, L. 3—3 Valvula ample; first and second papilla large, third papilla absent. u35do3agus point serrate. Cornuti long ovate patch. Saccus broad. Octavals deeply cleft. Ostium produced, long. Signum discoid, large. Brunncata, Thunb. 4 — 2 Valvula smaller than vauaria; first papilla strong, rounded; second papilla practically absent; third papilla quite absent. ^Edoeagus small. Cornuti long ovate patch. Saccus broad. Octavals widely but not deeply cleft. Ostium produced weak. Signum discoid stellate, internal points small. Liturata, Clerck. 2—2 Valvula ample; first papilla raised, second papilla raised, third papilla a single lobe. JBdceagus short, pointed. Cornuti ovate patch. Saccus broad. Octavals deeply cleft, inner edges emarginate. Ostium produced, with operculum. Ductus bursae cylindrical. Signum discoid, stellate, large. Notata, L. 4—2 Valvula ample; first papilla raised, second papilla raised, third papilla single lobe, spined. /Edoeagus short, pointed. Cornuti ovate patch. Saccus broad. Octavals deeply cleft, inner edges emarginate. Ostium produced, with operculum. Ductus bursae cylindrical. Signum discoid, stellate, large. There appears to be little observable difference 12 between the genitalia of this species and liturala, unless the papilla is larger. Alternata, Hb. 4—2 Valvula ample; first papilla raised, broad; second papilla small, scobinate; third broad, sometimes divided into two, bearing large spines. /Edoeagus pointed. Cornuti oval patch. Saccus broad, rounded. Octavals deeply cleft. Ostium produced, with operculum. Bursa elongate, delicate. Signum discoid, stellate, large. Limbaria, Fb. 5 — 2 Valvula ample; without papillae. Uncus pointed, without the pan* of spines. Gnathos tip swoollen, rounded, squamous. .^Edceagus broad, pointed. Cornuti weak, in radiating broken bands. Saccus pointed. Octavals absent. Ostium with operculum. Signum discoid, stellate, small. A group of five species which seem to have little connection with any other group, or even with each other, except margaritata and prosapiaria. Asymmetry in species seems to denote transitional forms. Angerona pnmaria, L. 4—2 Valva shape irregular; costa spined at apex; costal arm produced, curved, spined at apex. Uncus bluntly rounded. Gnathos broad, tip scobinate. ^doeagus stumpy. Cornutus bifurcate towards tip. Saccus rounded. Margin of eighth sternite bilobed. *0stium with operculum. Signum a ring of thickened chitine. Camprea margaritata, L. 10—3 Valva widely and deeply emarginate, apex widened, incurved, outer margin curved, bearing towards apex a short pedunculate spine; costal arms asymmetrical, left * Drawing of ostium reduced by one-half. 18 broad, indent towards scobinate tip; right longer, tapered, curved. Uncus stout, pointed; pads hairy. Gnathos atrophid. ZGdceagus slender sigmoid. Cornuti long band of fine short spines. Juxta sub-ovate, cristae hairs numerous. Saccus pointed. Ostium produced. Ductus bursse thickened. Bursa globular, pannicular. Ellopia prosapiaria, Tr. 5—3 Valva slightly emarginate, apex slightly widened, outer margin curved bearing towards apex one or more short, varying, pedunculate spines; costal arms slender, parallel, hairy. Uncus bluntly pointed; pads raised hairy. Gnathos atrophid. ^Edceagus slender, sigmoid, branched about centre, longer arm closed, scobinate. Cornuti short, double row. Juxta clavate, cristse hairs few. Saccus long pointed. Ostium weak. Signum lunular, small, dentate. Bupalus piniaria, L. 4 — 3 Valva short; costa spread over a large area, spined; sacculus heavily spined above. Tegumen a deeply arched hood. Uncus wide, trilobed. Gnathos large, strong, scobinate. ^Edoeagus sigmoid, gibbose above. Saccus pointed. Ovipositor normal. Ostium strong, produced. Bursa short, globular. The genitalia of this species bear a strong resemblance to those of the Noctuid moth Cymatophora duplaris. Bistoninae. Valva narrow, simple, or spined. Uncus broad, strong, hooded. Gnathos strong. Furca a fused thin transparent plate. ^Edoeagus thumbed. Ovipositor retractile. Biston strataria, Hufn. Valva simple, sides parallel; costal half heavily spined. Furca. fused, stout, tapered, tip hooked, Uncus blunt, 14 slightly bifurcate. Gnathos broad, squamous. ^Edceagus short, stout. Saccus abruptly pointed. Ovipositor long, retractile. Signum short, linear. Betularia, L. 4—3 Valva simple, sides parallel; costal half heavily spined. Furca fused, spatulate, weak. Uncus blunt, bifid. Gnathos squared, squamous. .SCdceagus long, stout. Cornuti many, fine in band, and small patch. Saccus abruptly pointed. Ovipositor long, retractile. Signum arcuate. Lycia zonaria, Schiff. 3—6 Valva simple; costa thickened. Furca fused, very weak chitinised plate. Uncus thick, pointed. Gnathos wide, squamous. .^Edceagus thick, short. Cornuti irregular, thorn-like. Saccus rounded. Ovipositor long, retractile. Ductus bursae long. Bursa subglobular, without signum. Hirtaria, Leach. 4—3 Closely related to species included in genera Lycia and Nyssia. It is interesting to note that hybridisation between this and those species, has been accomplished. Valva simple; costal fold long. Furca broad, fused, thin. Uncus thick, pointed. Gnathos broad, sqnamous, weak. ^Edceagus rather stout, thickened on the side of orifice. Cornuti thorn-like. Saccus rounded, central in- ward projection. Ovipositor long, retractile. Bursa small, delicate. Signum triangular. Nyssia lapponaria, Bdv. 3—3 Valva simple; costa thickened. Furca broad, fused, thin. Uncus thick, pointed. Gnathos broad, squamous, weak. yEdceagus tipped. Cornuti thorn-like. Saccus rounded, curved inward projection. Ovipositor long, retractile. Bursa small, delicate. Signum triangular, pointed. 16 Apocheima hispidaria, Fb. 4 — 3 This species has little resemblance to the species placed in the genus Nyssia, but is closely allied to pedaria. Valva excavated, broad, short; costa slightly spined at apex; harpe produced, rounded, with row of spines. Uncus broad, minutely bifurcate, pads hairy. Gnathos broad, squamous. JEdceagus narrow, short. Saccus pointed, narrow. Ovipositor narrow, short. Pedaria, Fb. 3—3 Valva tapered; costa spined; harpe produced, rounded, spined. Uncus short, minutely bifurcate. Gnathos broad, hooked, squamous. /Edoeagus stout, pointed; vesica thickened. Saccus short, rounded. Ovipositor moderately long. Ostium produced. Ductus bursae short. This species appears related to Boarmina. Psodos coracina, Esp. 9—4 Valva peaked, short, broad; costa produced, on upper third a single row of blunt spines. Furca partly fused, strongly dentate on upper edge, which is square. Transtilla separate, developed, pointed. Uncus strong, tapered, pads hairy. Gnathos strong, tip broad. ^Edceagus pistillate, narrow, two minute points at orifice. Saccus pointed. Ostium large, strong, rounded. Ductus bursse short. Bursa small. There are two strong spines near the edge of seventh segment. Boarmiinae. Valva with spiny armature. Uncus strong. Gnathos strong, generally present. Ovipositor usually retractile. Signum dentate. A large and somewhat irregular group. 16 Ematurga atomaria, L. 7—4 Valva peaked; harpe partly fused to skin, spined, spines short, stout. Uncus short, stout; from behind on either side on the anal edge of the ninth tergite, spring some four or five wide parallel hairs. Gnathos broad, scobinate in lines. /Edreagus short, tapered. Cornuti in two bands, some very long. Saccus pointed. Ovipositor long, retractile. Ostium weak. Bursa subcylindrical. Boarmia consortaria, Fb. Valva peaked; harpe long, heavily spined; sacculus pro- duced, spines strong. Uncus tapered, pointed; from behind (dorsal) on either side arises a long arm terminating in long aglutinated spines, hooked at the tips. Gnathos broad and double lobed, hardly free, ^doeagus short, stout, tapered. Cornuti one short, and one long band of spines. Juxta full, weak, cristse hairs straight, each terminating in a point. Saccus rounded. Ovipositor moderately long, retractile. Ostium weak. Signum small, ovoid, pointed. Roboraria, Schiff. 5—3 Valva peaked, wider below; costa widened at apex; harpe round, spined; sacculus heavily spined above. Uncus tapered, pointed. Gnathos broad, squamous. Jildoeagus stout, pointed below. Cornuti four sets, one single large, serrated at base; a band of long spines; a band of short spines; and one single, broad with large scobinations. Juxta weak, cristro hairs curved, each terminating in a globe. Saccus rounded and lobed. Ovipositor moderately long, retractile. Ostium wide. Ductus bursnc ribbed, scobinate. Signum ovoid with points. Cinctaria, Schiff. 2—2 Valvula short, peaked; costa widened at apex; harpe ex- tensive raised, edge serrate, one large spine. Uncus 17 tapered. Gnathos broad, weak, spined. zEdceagus short, obtusely pointed. Cornuti one curved, single pointed; one many pointed. Juxta centrally thickened, cristae hairs curved, each terminating in a cup-shaped head. Saccus rounded. Ovipositor long, retractile. Ostium produced. Bursa large. Signum small discoid, irregularly crinkled. Hcmerophila abruptaria, Thunb. Valva simple, outer margin excavated; costa sinuous, with chitinous teeth. Uncus short, blunt. Gnathos rounded, squamous. ^Edoeagus stout. Cornuti one short, one long. Saccus broad, central excavation. Ostium weak. Signum small, discoid, stellate. Cleorodes lichcnaria, Hufn. 4—2 Valva simple, narrow, peaked. Transtilla separate, ex- tended in an upward direction into two peaked, roundly pointed free plates. Gnathos atrophid. ^Edoeagus short, broad, thumbed at orifice. Cornutus large, strong, sigmoid, pointed. Saccus rounded. Ostium weak. Signum irregularly lunular. Punctularia, Hb. 4 — 2 Valvula broadest above, semi-transparent; costa extended beyond valvula, spined; harpe produced towards anal angle, spined at the rounded head. Uncus short, rounded. ^Edoeagus thickened and produced at orifice. Vesica scobinate. Saccus divided. Ostium produced. Ductus bursae thickened, short. Signum discoid, flattened. Alois rcpandata, L. 4—3 Valva rounded; costa broader towards apex; harpe two pointed projections on inner edge of costa, the upper swollen at the base and heavily spined. Furca curved, pointed, united at base. Uncus blunt. Gnathos hooked, 18 rounded, squamous. ^Edoeagus fusiform, orifice thickened, with right angled hook. Saccus rounded. Ovipositor long, retractile. Ostium thickened. Signum irregular, rounded, pointed. Jubata, Thunb, glabraria, Hb. 3 — 2 Valva simple, broad; costa thickened, spined, projecting at apex; harpe angular finger-like projection. Furca bifurcate. Uncus blunt, ridged. Gnathos pointed, squamous. ^Edoeagus short fusiform. Cornutus weak, little more than thickening of vesica. Saccus rounded. Ostium weak. Ductus bursas short. Selidosema gemmaria, Brahnt. 5—3 Valva pointed; costa produced at tip; fold produced, and spined on angle of inner margin. Uncus short, pointed, with rounded, raised hood. Gnathos atrophid. JMoeagus long, cylindrical, pointed, serrated towards tip. Cornuti numerous, short, two bands. Saccus rounded. Ovipositor short, retractile. Ostium wide. Bursa very long. Signum irregular, serrate. Ericetaria, Vill. 3—1 This species appears closely allied to the species included in the Boarmina, both in the male find female. Valva truncate; costa greatly developed, produced, spined on upper and under margin, spines strong. Uncus short, blunt. ^Edoeagus with projecting rose thorn near orifice. Juxta bilobed. Saccus rounded. Ostium small. Bursa small, delicate, subglobular. Signum arcuate, scobinate ridge. Cleora angularia, Thnb. 2—1 Valva broad, peaked; costa spined at apex; sacculus ex- tended, spined. Uncus blunt, spatulate, wider at tip. Gnathos pointed, squamous. ^doeagus long, narrow, thumbed, spoon-sh'aped above. Saccus rounded. Ostium small, weak. Signum discoid, stellate. 19 Deileptenia ribeata, Clerck., abietaria, Hb. 2—2 Valva peaked; costa spined; harpe raised, twisted, heavily spined. Uncus small, minutely bifid. Gnathos rounded, squamous. ^Edceagus short, stout, tapered, pointed. Vesica scobinate. Cornutus long. Saccus rounded. Ovipositor moderately long, retractile. Ostium weak. Ductus bursae thickened, ribbed. Bursa subglobular. Signum small, ovoid with points. Luridata, Bork. 4 — 3 Valva peaked; costa spined, edge set with beautiful tufts of wide clavate scales; harpe a fold, spined. Uncus short, stout. Gnathos weak, tip pointed. .ZEdceagus short, stout, tapered, thumbed. Cornuti two sets, one about twelve strong, and one long, strong, with large corrugated base. Saccus rounded. Ovipositor retractile. Ostium strong, with operculum. Ductus bursae thickened, ribbed. Signum discoid, folded. Consonaria, Bdv. 5—2 Yalva peaked; costa thickened; harpe three, rarely four spines, strong, springing from a bulbed base. Uncus short, three minute projections at tip; from the tegumen behind the uncus, on either side, are two beautiful tufts of clavate scales. Gnathos rounded, squamous. JMoaagus short-, tapered, thumbed. Cornuti two sets, one many long and short, and one long, strong, scobinate. Saccus pointed. Ostium with ovate plate. Ductus bursae thickened, ribbed. Signum discoid, stellate. Ectropis crcpuscularia, Hb. 10—3 Valva long, narrow; costa thickened. Uncus strong, tapered, without pads. Gnathos absent. ^Edoeagus long, cylindrical, thumbed at orifice. Vesica scobinate. Cristae hairs long, each terminating in a cup-shaped head. Saccus rounded. B 2 20 Ovipositor long, retractile. Ostium full. Ductus bursse short. Signum ovate, stellate, spined. Ninth segment thickly clothed with hair. Bistortata, Goeze. biundularia, Bork., Esp. 8—3 Valva long, narrow; costa thickened. Uncus strong, tapered, without pads. Gnathos absent. ^Edoeagus long, cylindrical, thumbed at orifice. Vesica scobinate. Cristae hairs long, each terminating in a flattened disc. Saccus rounded. Ovisipositor long, retractile. Ostium full. Ductus bursas short. Signum ovate, stellate, spined. Ninth segment thickly clothed with hair. Erannmae. Valva spined. Uncus short with two minute points. ^Edoeagus with a single spined cornutus. Juxta a thin bifurcate plate. The whole genitalia seems to bring some of the species into close relationship to the Bistonince. Agriopis leucophearia, Schiff. 6 — 3 Valva peaked, partly semi-transparent; costa spined towards apex; harpe a long curved pedunculate spine. Uncus broad, terminating in two points. Gnathos strong, squamous. ZEdoeagus rounded at apex. Cornutus single, base corrugated. Juxta bifurcate, peaked. Saccus rounded. Ovipositor retractile, long. Ostium strong, simple. Bursa subglobular. Some of the characters of this species seem to indicate a relationship with the Boarmince. Marginaria, Bork. 5—2 Valva narrow, strong spine at apex, heavily spined along the fold. Uncus slightly bifurcate. Gnathos strong, rounded, squamous. ^Edceagus apex rounded. Cornutus strong. Juxta indent above. Saccus bluntly pointed. 21 Ovipositor rather long, retractile. Ostium wide. Ductus bursse short. Signum irregular, with two points. Aurantiaria, Esp. 4—1 Valva narrow, tip pointed and curved; costal fold heavily spined above to the tip. Uncus broad, terminating in two points. Gnathos strong, broad, rounded, squamous. ^Edoeagus long. Cornutus strong, curved. Juxta bifurcate, terminating in two long spines. Saccus rounded. Ovipositor retractile, fairly long. Ostium strong. Ductus bursae thickened. Bursa ovate, cylindrical. Erannis defoliaria, Clerck. 6 — 4 Valva elaborate; costa curled inwards with comb of spines, apex produced, lobed, with spined papillae, outer margin indent; harpe a narrow flap, surmounted by two long hairs. Uncus broad, tip square. Gnathos wide, deep, curled at the tip. ^Bdosagus broad, scobinated orifice. Cornuti short in band. Juxta broad, lipped. Saccus pointed. Ovipositor rather long, retractile. Ostium wide, with in-turned scobinate flap at the orifice. Bursa ovate, cylindrical. The construction of the Genitalia is unlike the rest of the ErannincK. The scaling is similar to Bistonince. Alsophila aescularia, Schiff. 3—3 A solitary British example of a small genus confined so far as is known to Europe, Asia, and America, of which only five species are recognised, these we have examined, all agree in their genitalic characters. Valva deeply emarginate; costa produced in long arm; apex emarginate with two shorter projections. Uncus broad, square at tip. Peniculus with long scales, ^dreagus narrow, pointed. Juxta narrow, forked. Saccus pointed. Ovipositor normal. Ostium wide, with narrow ductus bursae. 22 Thcria rupicapraria, Hb. 6—3 This species has some resemblance to pictaria in both sexes. It is curious that the wing parts and time of appearance have not suggested an affinity. Valva simple; from the base of the costa spring a pair of serrated, scobinate plates. Uncus curious, long, slender, with a well developed hard chitinous hood behind. ^Edoeagus slender, pistillate. Juxta bifurcate, pointed, strong, with spines at either side. Saccus very long, pointed. Ovipositor beautifully clothed with long, curled, clavate scales, floricomus. Ostium weak, with small operculum. Bursa very small, rounded. Signum irregular, pointed. Aleucis pictaria, Curt. 3—4 Valva short, simple. Uncus long, hooked; pads hairy. Gnathos a ring, atrophid. ^Edceagus short, curved. Cornutus strong bulbed. Juxta bilobed, peaked. Saccus elegantly pointed. Ovipositor beautifully clothed with long curled clavate scales, floricomus. Ostium weak, with small operculum. Bursa pointed and ribbed at the extremity. Gnophinse. Valva rounded. Uncus generally weak. Gnathos strong, often narrow. Costal arm produced, set with socketed spines. Female irregular. Aspilates strigillaria, TV. 6—4 Valva peaked, simple; costa short, peaked. Uncus strong, tapered; pads hairy. Gnathos rudimentary only free at tips which are separated. /Edoeagus short, branched, with long hooked arm at orifice. Saccus rounded. Ostium produced. Signum cup-shaped. Gilvaria, Fb. 6—4 Valva rounded, wider above, asymmetrical; costal arm produced with two hamulate spines; right harpe, a dentate rounded plate; left a row of short spines. Uncus weak, knob at apex. Gnathos strong, narrow, tip scobinate. JMceagus intortate, strong spines at apex. Saccus rounded. Ostium produced, narrow. Bursa very small. Ochrearia, Rossi. 9—4 Valva rounded, costal arm produced with three hamulate spines; harpe a long row of short spines. Uncus weak, with knob at apex. Gnathos strong, narrow, tip squamous. /Edceagus short, with double row of teeth at orifice. Saccus roughly rounded. Ostium wide. Ductus bursse short, thickened in parts. Bursa small. Lineata, Scop. 4 — 2 Valva rounded; costal arm long, terminating in stout, hamulate spine. Uncus weak, broad, knob at apex. Gnathos long, scobinate. JMceagus dentate. Cornuti five to eight. Saccus wide, rounded. Ostium with operculum. Ductus bursae ribbed. Bursa sub-cylindrical. Signum elongate, irregularly serrated, spined. Myrtillata, Thunb. obfuscaria, Gn. 4—3 Valva peaked; costal arm short, emitting two long hamulate spines. Uncus short, rounded. Gnathos rounded, squamous. .tEdceagus short, stout, pointed. Cornuti numerous, short, stout. Juxta weak, bifurcate. Saccus pointed. Ostium weak. Bursa subglobular. Signum irregular, cup-shaped ridge. Gnophos obscuraria, Hb. 4—5 Valva short, peaked, wider below; costal arm produced, terminating in a long hamulate spine. Furca arms long. Uncus short, rounded; pads, long hairs. Gnathos free but weak. .Edceagus thickened at orifice. Cornuti two sets; 24 five to eight strong, straight, firmly fixed; and many long, curved at base, socketed. These latter are transferred to the bursa of female during copulation. We have only found a fragment of one of the stronger spines in the bursa of this and the preceding species, so that we are of opinion the stronger ones are not shed. Ostium weak. Ductus bursae very strong, ribbed, heavily dentate along the ridges in combs, probably for retaining the cornuti. Signum very large, rounded, stellate, four pointed. Dyscia fagaria, Thunb. belgiaria, H6. 7—3 Valva rounded; costal arm long, curved, tipped with a short blunt spine. Uncus very weak, broad, rounded, spined. Gnathos broad, rounded, with strong blade- like tooth. JMceagus lunular, bifurcate, one point curved outwards, the other large falcate. Cornuti small, about twelve to fourteen. Saccus irregularly rounded with free inward, peaked projection. Ostium produced. Bursa small. Abraxinae. Valva deeply emarginate; costa generally long free arm. Gnathos only present sometimes. .ZEdoeagus usually with rose-thorn. Female has a large stellate signum. Abraxas marginata, L. 3 — 3 Valvula peaked, simple; costa separate, long curved arm, terminating in socketed spine. Uncus tip minutely bifurcate. Gnathos rounded, squamous. /Edoeagus long, spoon-shaped at orifice, edge thickened. Cornuti about fourteen, short to long, stout. Saccus bluntly pointed. Ostium small spined. Signum discoid stellate, very variable in spining. Adustata, Schiff. 3—3 Valvula short, emarginate at anal angle; costa separate, long slender arm pointed. Uncus broad, tapered. Gnathos 25 weak, bluntly rounded. ^Edoeagus short, blunt, truncate (rose thorn) spine before orifice. Cornuti short, stout, in patch about sixteen. Cristse set with six spines. Saccus short, rounded. Ostium produced. Signum discoid stellate. Sylvata, Scop. 22—4 Valvula short, dentate, deeply emarginate at anal angle, the point scobinate; costa separate, long curved arm with single spine at apex. Uncus weak, except tip, which is stronger and rounded; behind the uncus at the end of the ninth tergite is a hairy papilla which varies considerably in size. JKdceagus cylindrical, with strong, short, truncate rose thorn at orifice. Cristae a rounded patch of spines. Saccus bluntly pointed. Ostium with operculum. Ductus bursae thickened. Signum discoid stellate. Pantaria, L. 6—1 This species has, as far as we are aware, never been taken in England, although it has often been recorded. We have examined a number of so-called pantaria, but in each case they have been proved to be sylvata. f The genitalia are very distinct and we have added a figure, so that any doubtful specimens may be examined and proved whether they are this species or not. The main point of difference lies in the deep emargma- tion of the valva before the large emargination. In pantaria it is deep and forms two long claws, which are not specially noticeable in sylvata. We have also examined a number of other specimens from various parts of the world, all very similar in wing markings to sylvata and find the genitalia show a number of distinct species. Valvula short, dentate, anal angle emarginate, point not scobinate; costa separate, long curved arm with single spine at apex. Uncus weak, except at tip, which is stronger and rounded. No hairy papilla on ninth tergite. ^Edceagus pistillate with strong truncate rose thorn at orifice, and disc at base. Cristee a rounded patch of spines. Saccus rounded. Ostium strong, bilobed. Ductus bursse thickened. Signum discoid stellate. Grossulariata, L. 12—28 Valvula short, slightly pointed, emarginate at the anal angle; from the inner margin springs a bifid tooth, the edges of which are often dentate, below this is the harpe, a single spine; costa separate, long curved. Uncus short, with large spreading pads. JEdceagus pistillate, strong truncate rose thorn at orifice. Cristae a rounded patch of spines. Saccus rounded, with prolongation at base. Ostium small. Ductus bursse thickened. Signum discoid stellate, variable in the twenty-eight specimens examined. Ptychopodinae. Valva partially fused, sometimes squared at the apex, with two points. Female bursa also irregular, may be plain, spined, or pannicular. Not a compact group. Antcois muricata, Hufn. 12—4 Valva fused, long, simple, twisted. Transtilla strong, peaked, long scobinations. Uncus bifurcate. Gnathos strong, pointed, scobinate. ^Edceagus short, orifice scobinate. Cornuti pointed, flattened, one large, two strong. Saccus rounded. Ostium strong, lipped. Ductus bursae ribbed. Bursa spined, ridged. Ptychopoda bisctata, Hufn. 8—4 Valva fused, apex wider, with three or four spines on the outer margin; apex set with clavate scales. Uncus tapered. Gnathos pointed, squamous. ^Edceagus sigmoid, tip scobinate. Cornutus large, irregularly curved. Juxta bilobed. Saccus pointed. 27 Ovipositor quadri-lobed. Ductus bursae long curled. The male possesses on the first abdominal sternite a rounded sac, set with clubbed glands forming in the mount a beautiful rosette. Behind this are a pair of lobes in which are placed the tips of the hairs forming the fan foot which spring from near the junction of the femur with the tibia. This formation also occurs in the Lobophorincs. Trigeminata, Hw. 3—2 Valva fused at base, irregularly curved, anal angle pointed. Uncus tapered, tip rounded. Gnathos tapered, squamous. .Edceagus, orifice scobinate. Cornutus sigmoid. Saccus bluntly pointed. Ostium not produced. Ductus bursao armed with a few short spines. Sterrha ochrata, Sc. 3—2 Valva fused, apex squared, with hook at anal angle. Uncus long, narrow, behind the uncus dorsally is a spined cap, which is probably the anal edge of the ninth tergite. Gnathos broad spined. JMceagus curved. Cornutus pointed, base rounded. Saccus rounded. Ovipositor quadri-lobed. Ostium lipped. Bursa globular, instrate. Dimidiata, Hufn. 6—3 Valva fused, apex set with clavate scales, asymmetrical; right valva emarginate with long point, left valva emar- ginate with short point. Uncus tapered. Gnathos tapered, squamous. ^Edoeagus sigmoid. Cornutus a long indefinite spine. Saccus rounded. Ovipositor quadri-lobed. Ostium small, opening into which is a long curved blind duct. Bursa globular, instrate. rf Straminata, TV. 4—2 Valva fused, rounded, apex set with clavate scales. Uncus tapered. Gnathos broad, squamous. JSdceagus short. Vesica scobinate. Saccus rounded. 28 Ovipositor quadri-lobed. Ostium weak. Bursa elongate, instrate. There appears to be no difference between this species and circellata, Knaggs. Subscriccata, Hw. 6—3 Valva not fused, rounded. Uncus tapered. Gnathos broad, squamous. ^Edoeagus with falcate hook at orifice. Saccus pointed. Ostium weak. Ductus bursse constricted at the junction of bursa. Bursa instrate. There appears to be no difference between this species and mancuniata, Knaggs. Perochraria, F.R. 4—2 Valva fused, emarginate and produced on outer edge; sacculus extended, tip spined. Uncus broad. JSdoeagus base bulbed, from the interior of the base arise two pointed arms which are probably cornuti. Saccus rounded. Ostium wide. Ductus bursae short. Bursa subglobular, upper part thick dark chitine. Contiguaria, Hb. 6—6 Valva fused, emarginate on outer edge; costa produced, tip free, pointed. Uncus tapered. Gnathos tapered. <3Edo3agus narrow, asymmetrically scobinate above. Saccua pointed. Ostium simple. Ductus bursse large, thickened. Bursa very small. Ania emarginata, L. 12—4 Valva partly fused, irregularly curved, heavily spined at the articulation and along the costa, with strong spines. Tegumen arched, hooded. Uncus tapered. Gnathos broad, squamous. ^Edoaagus fairly long. Cornuti short, six to ten. Saccus bluntly pointed. Ostium wide. Bursa twisted, curled, spined. Cosmorhoe virgularia, Hb. 6—3 Valva fused, rounded at apex. Uncus tapered, narrow. Gnathos broad, squamous. ,/Edceagus long. Cornutus very long, slender. Saccus long, pointed. Ostium simple, wide. Bursa curled, spined. Hcrbariata, F. 2—1 Valva sides almost parallel, squared at apex, points at anal and costal angles. Uncus tapered. Gnathos broad, scobinate, spined. ^Edoeagus cylindrical, stout. Cornuti two, one long, straight, slender; the other shorter, curved at base. Saccus rounded. Ostium large. Bursa spined. Interjectaria, Bdv. dilutaria, Hb. 10—3 Valva almost square at apex, points at anal and costal angles. Uncus tapered. Gnathos broad, scobinate, hairy. ^Edoeagus stout. Cornuti two; one short, curved, bulbed; the other longer, straighter; these are united at the base, with long corrugations. Saccus pointed. Ostium small. Ductus bursso long, lined with short teeth. Bursa broader and spined. Humiliata, Hufn. 2 — 1 Valva fused, rounded, pointed at the anal and costal angles. Uncus tapered, rounded. Gnathos squamous, hairy. ^Edceagus long. Cornuti four graduated, bulbed, joined by corrugated base. Saccus bluntly pointed. Ostium produced. Ductus bursae spined in longti- tudinal lines. Dilutaria, Hb. holoscricata, Dup. 6—4 Valva fused, narrow; apex dentate, a strong spine at the anal angle. Uncus tapered. Gnathos broad, hairy. /Edceagus stout, long. Cornuti two, one broad pointed, with long corrugated base, the other long, spatulate. The latter we have found shed, or perhaps broken off during copulation. Saccus pointed. 30 Ostium weak, narrow. Ductus bursae long. Bursa long, curled, spined. Rusticata, F. 6—7 Valva fused below, rounded, point at apex, and a larger one below. Uncus tapered. Gnathos broad, squamous, hairy. /Edosagus stout. Cornutus fairly long, curved. Saccus pointed. Ostium small, scobinate. Ductus bursae not long. Bursa coiled, spined. Degeneraria, Hb. 4—5 Valva fused, obliquely pointed. Uncus cygnate. Gnathos double pointed. JEdceagus long, stout. Vesica with rugose thickening at the junction of ductus ejactulatorious. Saccus bluntly pointed. Ostium wide. Ductus bursse long. Bursa curled, upper half spined, lower instrate. Avcrsata, L. 6—6 Valva pointed; apex spined, also spined along a ridge on the outer margin. Uncus cygnate. Gnathos divided, forming two sacs, armed with spines. ^Edoeagus long. Cornuti from five to eight graduated, bulbed, and a broad corrugated patch on the vesica. Saccus widely pointed. Ostium wide, with a pair of rounded guides. Ductus bursae long. Bursa curled, spined above, instrate below. Inornata, HwS 6 — 6^ Valva fused, broader before apex. Uncus tapered. Gnathos weak, tips produced, scobinate. ^Edoeagus very short. Vesica of enormous length, armed with short cornuti. Saccus rounded. Ostium produced. Ductus bursae of great length in coils, spined. Bursa subglobular, instrate. Caberinae. Valva rounded. Gnathos weak, atrophid. Bursa large, spined. 31 Cabera temerata, Hb. 8—4 Valva broad, simple, rounded. Uncus long, pointed; pads raised, hairy. Gnathos free, large, delicate, ^doeagus long, pointed. Cornuti three long, three short spines. Anellus bilobed, peaked. Juxta thin, knobbed at apex. Saccus pointed. Coremata on ninth segment, spring from curved bases, formed like scales. The anterior edge of eighth segment bears two rounded projections. There is every indication of a ventral plate. Ostium small. Ductus bursse long, ribbed, dentate. Bursa subglobular. Signum a tube with broad, spatulate, plate. Bimaculata, Fb. 7—4 Valva broadly peaked; harpe free at tip, peaked. Uncus long, tapered; pads raised, hairy. Gnathos free, a delicate ring, ^dceagus small. Cornuti small in a patch, and a rugose band. Anellus strong, bilobed, peaked, scobinate. Saccus rounded. Coremata similar to preceding, but bases more numerous. Ostium wide, with' scobinate operculum. Ductus bursae curled. Bursa long, narrow, cylindrical, ring of large, strong spines in middle. Pusaria, L. 6 — 3 Valva rounded , simple; costa short, small rugose projection. Uncus long, tapered; pads hairy. Gnathos a delicate ring, atrophid. .ZEdoeagus very large. Cornuti lon£, generally six. Cristse hairs short. Saccus long, pointed. Ostium wide. Bursa enormous, cylindrical, spined in longitudinal lines. We can see no difference between this species and rotwndaria, Haw. except in size. Exanthcmaria, Scop. 5—6 Valva peaked, curved; costa short, small rugose projection. Uncus long, tapered; pads hairy. Gnathos a wide ring, 32 atrophid. ^Edceagus large. Cornuti fairly long, numerous. Cristae absent. Saccus pointed. Ostium wide, with small operculum. Bursa large, pyriform, spined longitudinally. AGNATHOI. Gnathos reduced to a mere thickening of chitine, or absent. Anus generally long, with spiny subscaphium. Central area with labides, anellus lobes, or calcar. Manica well developed, often spiny. Acidaliinae. This natural genus has peculiarities which we have not found in any other group of Geometridce. The male features are found in the extreme fusion of the genitalia; the separation of the hard chitinous sacculus, from the con- siderably reduced valvula; the absence of uncus; the great development of the socii; the hard chitinous anellus; the large saccus; and the pencil of long, curved, plumed scales, springing from a circular base, at the articulation of the sacculus with the tegumen. This group also, is peculiar owing to the presence of a special development of the eighth sternite, consisting of a chitinous plate, internal for half its length, then coming to the surface, where it is con- tinued in two pointed arms termed cerata. Covering these cerata is a loose, semi-circular flap, clothed with long, narrow scales, termed the mappa. In the female, the mappa is represented by a loose flap, which in repose, covers the ostium. This we term the instita. Throughout the genus the signum is composed of a number of " pip " like spines, arranged in a patch. Acidalia strigilaria, Hb. i—i Valvula fused; costa long, curved; saccnli asymmetrical, left, tapered, pointed; right, tip broad, pointed, protruding from which is a large lobe. Uncus obsolete; socii spined lobes. /Edoeagus stout, tip pointed. Cornuti elaborate, large, curved, with long base, thickened in parts. Anellus 83 bifurcate, arms long. Saccus deep, rounded. Mappa long, rounded; cerata asymmetrical, left short, straight; right long, curved. Ostium produced; instita rounded. Signum ovate mass of large pips. Immorata, L. 3—2 Valvula fused, bluntly pointed; sacculus long, rounded. Uncus not produced obsolete; socii short. /Edoeagus broad, dentate patch at orifice. Cornutus stout, pointed. Anellus asymmetrical, arms very long, left rounded, right truncate. Saccus broadly pointed. Mappa rounded; cerata asym- metrical, left short, well developed, foot shaped; right long, sigmoid, spines at apex in a long band. Ostium large; instita large, indent. Bursa subglobular. Signum triangular, pips coalesced, obtusely serrated and spined. Pumata, Steph. 4—2 Valvula fused, pointed; sacculus short, pointed. Uncus obsolete, chitine thickened; socii long, pointed. ^Edceagus short. Anellus bilobed, peaked. Saccus rounded. Mappa rounded; cerata asymmetrical, left very short, stout; right long, broad. Ostium produced, with instita rounded. Signum large mass of pips. Ornata, Scop. 5—2 Valvula fused, apex rounded; sacculus broad, tapered, tip emarginate. Uncus obsolete; socii geniculate, which in the mount, causes them to cross each other. .ZEdosagus curved. Cornutus short. Anellus not produced, thickened. Saccus rounded. Mappa rounded, incurved above; cerata long, curved. Ostium produced, strong. Bursa rounded. Signum ovate, central portion of pips coalesced. 34 Strigaria, Hb. 1—1 Valvula fused, pointed, spined; harpe tapered; sacculus curved, tapered. Uncus not produced; socii broad. ^Edoeagus short. Cornuti two sets, one stout pointed, the other tapered pointed. Anellus broad, bilobed. Saccus rounded. Mappa roundly drawn to a blunt point; cerata asymmetrical, right short, stout, pointed, spined; left long, curved, point curved, spined. Ostium produced, strong. Ductus bursse very short. Bursa pear shaped. Signum ovate, few scattered pips. Immutata, L. 6 — 4 Valvula fused, small; sacculus pointed. Uncus not pro- duced, chitine thickened; socii long, narrow. JMceagus narrow. Anellus lobes fairly long. Saccus rounded. Mappa rounded; cerata asymmetrical, left very short, geniculate; right long, curved. Ostium small; instita rounded, elongate. Bursa sub- globular. Signum pips scattered, coalesced in centre. Floslactata, Haw., remutaria, Hb. 10—4 Valvula fused, pointed, short; sacculus pointed. Uncus obsolete, chitine thickened; socii long, lobed towards apex. ^Edosagus pointed. Anellus lobes peaked. Saccus bluntly rounded. Mappa sometimes slightly indent; cerata almost symmetrical, left shorter. Ostium small; instita rounded. Signum small diamond-shaped patch of pips. Imitaria, Hb. 15—7 Valvula fused, short, pointed; sacculus pointed. Uncus obsolete, chitine thickened; socii long, widely apart. ^Edceagus pointed. Anellus lobes peaked. Saccus rounded. Mappa rounded; cerata asymmetrical, left long, slightly curved; right shorter, much curved. The only instance of right cerata being the shorter. Ostium small; instita rounded. Signum ovate mass of pips. 35 Rubiginata, Hufn. 6—3 Valvula fused, socketed spine inserted at apex; sacculus very broad, short. Uncus obsolete; socii widely apart, short. ^Edoeagus long, narrow, broader at base. Anellus extended in a broad plate. Saccus bluntly pointed. Mappa broadly rounded; cerata short, stout. Ostium broad. Bursa subglobular. Signum large mass of pips. Emutaria, Hb. 6—4 Valvula fused, apex rounded; sacculus broad, tapered. Uncus obsolete, chitine thickened; socii long, widely apart. .SCdceagus pointed. Anellus lobes rounded. Saccus rounded. Mappa long, rounded; cerata asymmetrical, left slightly shorter, stouter. Ostium small; instita rounded. Signum large, ovate patch of pips, centre coalesced. Marginipunctata, Gocz. 10—4 Valvula fused, narrower before apex; sacculus strong, tapered. Uncus not produced; socii long, slender. ^Edceagus narrow, broader at base. Anellus lobes broad. Saccus rounded. Mappa rounded; cerata just represented atrophid. Ostium narrow, strong. Bursa subglobular. Signum large mass of scattered pips. Cosymbiinae. The Cosymbiince form a complete group and seems to pro- vide a place for the abnormal Timandra amata. The uncus, which is weak and evidently useless as a grasping hook, is attached to and forms the dorsal thickening of the anal tube. The saccus is curously incurved. The signum is a deep ridge. Rhodometra sacraria, L. 4—2 Valvula fused, small, rounded; the sacculus, occupying the greatest area, is spined with short, stout, spines at the C 2 36 apex. Uncus tapered, hooded, naked. Socii pointed. JMceagus with an angular plate at the orifice. Cornutus dentate. Saccus very large. The edge of the eighth segment is clothed with a single row of long hairs. Ostium opens from a circular plate with a projection. Ductus bursae thickened. Signum a deep ridge. Timandra amata, L. 7—3 Valva cardinate, fused, very complicated and unlike any other British geometer. Costa a strong, bowed arm, forked towards the apex, the outer arm being free; the inner arm carries the weak membrane of the valvula; sacculus emarginate, extends in a long tapered arm. Uncus large, spined and carries two scobinate flanges which may be a modified gnathos. ^Idceagus long, sigmoid, scobinate thumb at the orifice. Saccus tnlobed, centre indent. Ostium produced; instita indent. Bursa subglobular. Signum a deep ridge. Codonia porata, Fb. 5 — 3 Valvula rounded; costa slightly incurved; sacculus free, base weak, extending in an arm, set with a few spines at its junction with a broad, pointed plate, emarginate on the outer edge. Uncus weak; pads raised hairy. .ZEdceagus pistillate, broader towards centre. Saccus incurved. Ostium weak. Signum a deep ridge. Punctaria, L 6—3 Valvula rounded; costa deeply incurved; sacculus free, base weak, extending in a rounded papilla, set with numerous spines at its junction with a squared plate which bears strong spines on the outer margin. Uncus weak, edge of upper half spined. ^Edoeagus pistillate, lobed on one side towards centre. Saccus incurved. Ostium weak. Signum a deep ridge. 37 Lincaria, Hb. 6—4 Valvula rounded; costa emarginate; sacculus free, base weak, extending in a rounded, projecting, papilla, set with a few long spines at its junction with a heavily spined, curled, plate. Uncus weak, edge spined. jEdrcagus long, pistillate. Saccus incurved. Ostium weak. Signum a deep ridge. Cosytnbia annulata, Schulz. 3 — 2 Valvula rounded, base spined; costa incurved; sacculus base weak, extending in a projecting papilla, set with stout, straight, spines at its junction with a long curved arm. Uncus weak, edge spined above, ^doeagus short, pistillate. Saccus incurved. Ostium weak. Signum a deep ridge. Pendularia, Clerck. 3 — 2 Valvula rounded, base spined; costa almost straight; sacculus base weak, extending in a projecting papilla, set with many fine spines at its junction with a long curved arm. Uncus weak, edge spined to the base. /Edoeagus pistillate. Ostium weak. Signum a deep ridge. Orbicularia, Hb. 4—3 Valvula rounded; costa almost straight; sacculus base weak, extending in a projecting papilla, set with a few stout spines at its junction with a curved arm. Uncus weak, edge spined nearly to base. JEdceagus pistillate. Saccus incurved. Ostium weak. Signum a deep ridge. C. puppillaria the type of this genus may be dis- tinguished by the junction of the sacculus with the curved arm being set with short, stout, spines. Lythia purpuraria, L. 3_3 A difficult structure to read. Its position very doubtful. Valvula reduced to a small lobe projecting from the 88 sacculus, joined to the articulation by the spined costal fold; costa produced in free tapered arm; sacculus very broad, tip scobinate. Uncus weak, atrophid, attached dorsally to the anal tube; pads slightly hairy. .Edceagus short. Cornuti two strong spines. Saccus squared, in- curved. Ostium bilobed. Bursa long. Parascotia fuliginaria, L. 2—1 The genitalia appear to throw little light on the position of this species. I include it here because it has some characters which seem to justify my doing so. Valvse fused, pointed. There are three other pro- jections; a hairy papilla near the base; a strong spine, and a weak spined papilla. Uncus broad spatulate with sharp point (? a Noctuid uncus). ^Edoeagus pistillate, apex set with one large and two smaller spines. Anellus scobinate. Saccus very large, deep. Ovipositor tubular. Ostium strong. Ductus bursae thickened. Bursa weak, small. Asthcninae. The Asthenina form a complete group, the extension of the sacculus being a feature in the male. The female is even more characteristic, having a long evenly spined signum. Obliterate and cambrica are closely allied, and there is nothing in the genitalia to exclude them from this genus. The uncus is weak and entirely attached to the anal tube which bears a thickened subscaphium. Minoa murinata, Scop. 3 — 3 Valva fused; costa produced pointed; sacculus produced pointed. Labides long, curved. Uncus not produced, bluntly pointed. ^Edoeagus large. Cornutus strong, bulbed. Saccus very large, deep. Ostium wide. Ductus bursae thickened. Signum rosette of spines. On the seventh sternite are a pair of small papillae. 39 Asthena testaceata, Don. sylvata, Hb. 5—3 Valva pointed; costa thickened; sacculus produced, arm long. Labides long, pointed, curved. Uncus very weak, atrophid. ^Edoeagus orifice cleft. Juxta bilobed, hairy, base curves downwards deeply into the saccus. Saccus very long, wide, rounded. Ovipositor tubular. Bursa rounded, finely scobinate. Signum ovate, long, spined. Luteata, Schiff. 8—6 Valva rounded; costa thickened; sacculus produced, long tapered arm. Labides long, lobed. Uncus atrophid, pointed. ^Edoeagus long, orifice cleft. Juxta trifid, central arm long. Saccus deep, rounded. Ovipositor tubular, not bilobed. Ostium weak. Signum ovate, spined. Blomeri, Curtis. 10 — 4 Valva broad, rounded; costa short, arched; sacculus arm long. Labides very short, two papillae. Uncus atrophid, very weak. ^dceagus long. Juxta bilobed, curves down deeply into saccus. Saccus long. Ovipositor normal. Signum ovate, spined. Candidata, Schiff. 8—5 Valva rounded; costa gibbose; sacculus arm short, pointed. Labides long, hairy. Uncus very weak, atrophid. ^Edoeagus short, cylindrical, tip scobinate. Vesica com- plicated. Cornuti one long strong spine with two or three smaller ones springing from its base. Ovipositor normal. Ostium weak. Signum ovate, spines long, slender. Oblitcrata, Hufn. 6—4 Valva rounded; costa short; sacculus arm extended. Labides pointed, long, hairy. Uncus very weak, atrophid. ^Edoeagus long, thumbed, scobinate at orifice. Juxta well developed, the plate projects upward. Cristse eight long hairs at either side. Saccus rounded. 40 Ostium weak, bilobed. Bursa delicately scobinate. Signa two sets spined, one elongate pyriform, the other a triangular patch. Cambrica, Curtis. 6 — 4 Valva rounded; costa gibbose; sacculus arm broad, spatu- late. Labides stout, hairy. Uncus very weak, atrophid. JMoeagus long, subsigmoid. Saccus very large, rounded. Ovipositor normal. Ostium weak. Bursa spined. Signa two sets, one ovate spined, the other a spined patch near the duct. Oporiminae. Valva rounded. Labides with heads united. Anal tube long, often decorated with fine spines. Female usually with two scobinate signa. Operophtera brumata, L. 12—5 Valva rounded, simple. Labides arched, hairy. Uncus fairly long, spatulate, tip rounded; pads hairy. zEdoeagus narrow. Cornutus long, dentate. Juxta bilobed below. Cristse hairs short. Saccus long, pointed. Ovipositor rather long, retractile. Ostium encircled. Ductus burssB cylindrical. Signa two, discoid, dentate. Boreata, Hb. 6—3 Valva rounded, simple. Labides united, arched, hairy. Uncus long, spatulate, tip with hard point; pads hairy. JSdceagus pointed. Cornutus long, dentate. Juxta bilobed. Cristae reduced to a single spine. Saccus long, pointed. Ovipositor rather long, retractile. Ostium encircled. Ductus bursae cylindrical. Signum discoid, dentate. Oporinia. The appearance of wing markings being somewhat alike, the genitalic differences become of great value. It would be well if collectors, when setting the males of these insects, would open the valvae, when a hand lens would show to which group the individual belonged. m The valvao with lateral hooked projections, show dilutata and christyi, which can again be separated, by brushing the eighth sternite to expose the octavals. If these lie close together, the specimen is christyi; if apart, dilutata. The valvae without lateral hooked projections show filigrammaria and autumnata; those with a deep excavation between the octavals being filigrammaria. In mounted specimens, the less numerous cristse hairs will also clearly separate the latter species from autumnata. Oporinia dilutata, Bork. 20 — 8 Yalva peaked, hooked on outer margin; costa thickened. Labides head not wide. Uncus broad, tapered; pads hairy. /Edoaagus long, curved, dentate above. Vesica scobinate. Cristas of about seven hairs. Saccus pointed. Octavals wide apart. Ovipositor long, retractile. Ostium encircled. Signa two, discoid, scobinate. In the figure of this species, the ductus seminalis has been added. Christyi, Prout. 12—5 Yalva shorter than dilutata, hook more curved. Labides head wide. Octavals close together. Signa two, small. Filigrammaria, //.-S. 18—6 Valva peaked, sharp angle on outer margin in place of hook. Labides head not wide. Uncus broad, tapered. /Edoeagus short, dentate above. Cristse of about seven hairs. Saccus pointed. Octavals strong, divided by a deep excavation. Ovipositor fairly long, retractile. Ostium encircled. Signa two, discoid, scobinate. Autumnata, G«. 12—4 Labides head wide. Cristae of about nineteen hairs, and several at the base. Octavals smaller than filigrammaria , excavation not deep. Signa two, distinctly smaller. 42 Perizoma didymata, L. 6—4 Valva rounded; costa strong. Labides united, forming a broad head clothed with short hairs. Uncus tapered, pointed, pads absent. JMceagus short. Cornuti a band of long spines. Manica finely spined. Grists three or four spines. Saccus rounded. Anal tube spined throughout the genus. Ostium not encircled, weak. Signum discoid, scobinate. Mmorata, Tr. 8—3 Valva rounded. Labides united, head pointed. Uncus tapered. ^Edoeagus scobinate above. Manica finely spined. Saccus rounded. Ostium encircled. Signum discoid, ovate, scobinate. Blandiata, Schiff. adaequata, Bork. 6—3 Valva rounded. Labides united, head bilobed. Uncus tapered. ^Edoeagus slightly scobinate. Manica finely spined. Saccus rounded. Ostium encircled. Signum discoid, scobinate. Bifasciata, Haw. unifasciata, Haw. 5—5 Valva rounded. Labides united, head ovate, only spined above. Uncus cylindrical, pointed. ^Edoeagus rounded above, scobinate. Manica finely spined. Saccus rounded. Ostium encircled. Signum discoid, produced pos- teriorly, scobinate. Albulata, Schiff. 6—4 Valva short. Labides head united, lunate. Uncus tapered. ^Edoeagus scobinate at orifice. Manica finely spined. Juxta indent. Saccus rounded. Ostium encircled. Signum discoid, produced pos- teriorly, scobinate. 43 Flavofasciata, Thunb. dccolorata, Hb. 8—4 Valva rounded. Labides head united, globular. Uncus tapered. ^dceagus rounded at tip, scobinate. Manica slightly spined. Saccus rounded. Ovipositor retractile. Ostium encircled. Signum elongate, ovate, coarsely scobinate. Alchemillata, L. 9—4 Valva short. Labides head united, bilobed. Uncus short, pointed. Vesica rugose. Juxta narrower above. Saccus rounded. Ostium weak. Signum discoid, scobinate. Affinitata, St. 4—3 Yalva simple. Labides united, head globular. Uncus tapered, broad at base. /Edreagus simple. Juxta indent above and below. Cristae a pair of hairs. Saccus rounded. Ovipositor retractile. Ostium weak. Signa two sets, one elongate, ovate, spined; the other discoid. Taeniata, S*. 6—5 Valva rounded; costa slightly produced. Labides united in pointed head. Uncus very weak, spatulate, pointed, with a pair of hairs above. -^Edceagus simple. Cornutus long, stout. Manica heavily spined. Saccus rounded. Ostium encircled. Ductus bursae strong, thickened. Signum a spined ridge. Eupitheciinae. With the exception of oblongata, the group is without armature to the valvse. The valvae differ considerably in shape, and are generally large and full. The uncus is usually minutely hooded. The labides would probably form important organs for differentiation, but the peculiar curvature makes it impossible for one to mount them in a uniform position so as to render them easy for comparison, therefore little can be made of them. The papillae that arise on the feet of the labides, afford to some extent a 44 differential character in closely allied species. The anal tube is always accompanied by the subscaphium, which is partly covered by small spines. The plate of the eighth segment varies considerably in shape and structure. It arises interiorly from the sternite, often as a free plate, and sometimes comes to the surface where it becomes highly chitinised; at other times it is fused to the skin of the sternite, and is a mere thickening of the chitine. Dr. Buchanan White appears to have been the first to call attention to this important character, and it has been sub- sequently used by Dr. W. Petersen in his monograph of the Eupithecice. The juxta is a hard, rounded, chitinous plate, with two arms projecting from above. The cornuti, of which there are often four sets, are of immense import- ance, but here again the difficulty of obtaining the same position renders them of less value than they would other- wise be. Coremata on the ninth segment. The female as a rule has good distinguishing characters. Eupithecia oblongata, Thnb. 3—3 Valva emarginate on the outer edge; harpe raised, hairy. Cornuti weak, striated, and appear to consist of two pieces. Goremata short, hairs long. Saccus indent. Ostium strong. Ductus bursse elaborate. Burea instrate. Pusillata, Fb. 6—3 Valva emarginate on outer edge. Cornuti three sets, one long, scobinate above; one bulbed spine; one small spine. Coremata truncate, hairs few, long. Saccus slightly indent. Ostium strong. Ductus bursse short. Bursa panni- cular, the upper teeth being large and strong. Distinctaria, H.-S. Const rictata, Gn. 2—2 Valva emarginate on outer edge. Cornutus long, delicate. Coremata globular, hairs long. Saccus rounded. 'Ostium weak. Ductus bursse weak. Bursa pannicular. Insigniata, fib. Consignata, Bork. 6—4 Valvae asymmetrical, the point at the anal angle being considerably more extended on the right side than on the left. Papillae on the labides' feet are of thickened chitine. Cornuti three sets, one scobinate; one bulbed; one small. Coremata short, hairs long. Saccus indent. Ostium weak. Ductus bursae thickened. Bursa elongate, cylindrical, panicular. Abbreviata, S*. 8—3 Valva strongly pointed at anal angle. Cornuti three sets, one very long pointed; one heavily bulbed; one irregular with base. Coremata weak. Saccus indent. Ostium weak. Ductus bursae long. Bursa elongate, cylindrical, a band of teeth across the middle. Exiguata, Hb. 5—4 Valva emarginate on the outer margin. Cornuti three sets, two scobinate; one pointed, irregular, weak with base. Coremata globular, hairs long. Saccus indent. Ostium weak. Ductus bursae short. Bursa sub- globular, pannicular. Denotata, Hb. Campamilata, H.-S. 9—4 Jasioneata, Crewe. 4—3 We can see no difference between these two forms. Valva not strongly produced at anal angle. Cornuti two sets, one strong, pointed; one narrow plate with base. Coremata sessile, hairs long. Saccus rounded. Ostium weak. Ductus bursae short. Bursa elongate, cylindrical, a few teeth above, base spined. Sobrinata, Hb. 11—7 Angelic at a, H.-S. Stevensata, Webb. We can see no difference between these three forms. Valva truncate, sharp narrow point at anal angle. 46 Cornuti two sets, one very strong, long, bulbed; one plate with base. Coremata broad, hairs long. Saccus rounded. Ostium weak. Ductus bursae long, thickened. Bursa well covered with spines in the lower two-thirds, upper- most spines strong. Nanata, Hb. 8—6 Valva scarcely produced at anal angle. Cornuti two narrow spines, and an irregular plate, with base. Papillae large, thickly spined. Coremata globular, hairs long. Saccus rounded. Ostium weak. Ductus bursae short. Bursa lower half spined, ridges of spines continued upwards towards the ostium. Fraxinata, Crewe. 8—3 Innotata, Hufn. 3 — 2 Tamarisciata, Frr. 2 — 1 We can see no perceptible difference between these three forms. Valva hardly produced at anal angle. Cornuti one narrow spine, and a broad pointed plate with double base; vesica heavily scobinate. Papillae long, thickly spined. Coremata sessile, hairy. Saccus rounded. Ostium weak. Bursa three-quarter spined. Dodoneata, Gn. 2—2 Valva sharply peaked, slightly elbowed at anal angle. /Edreagus large. Cornuti one narrow spine; one small, pointed, flattened plate; one very large, pointed plate with base. Coremata globular, hairs long. Saccus rounded. Ostium large, weak. Ductus bursae long. Bursa lower third spined. Satyrata, Hb. 6—2 Curzoni, Greg., 3—2 Callunaria, Sta. 3—1 We can find no difference between these three forms. Valva curved. Unciis sharply pointed. Cornuti four 47 of various size, scobinate, one with base. Coremata trun- cate, hairs long. Ostium weak. Ductus bursae short. Bursa pannicular, teeth strong. Lariciata, Frr. 5—3 Valva large, broad, anal angle produced. ^dceagus small. Cornuti one narrow spine; one broad irregular plate. Papillae long, narrow, sparsely spined. Coremata sessile, hairs long. Ostium weak. Ductus bursse small, short. Bursa double lobed, upper part with patch of scattered spines; lower lobe almost instrate. Helve tic aria, Bdv. 2—2 We can see little difference between this and arceuthata, but hesitate to express an opinion without more material. Valva broad, short, pointed. Cornuti three, one strong, scobinate; one dentate; one indefinite plate with base. Coremata sessile, hairs scanty. Saccus rounded. Ostium weak. Ductus bursae short. Bursa with heavy fold, subcylindrical , basal half sparsely spined with irregu- lar spines. Arceuthata, Frr. 1—1 Valva broad, short, pointed. Cornuti two, possibly three, one broad, strong, scobinate; one dentate; one indefinite with base. Coremata sessile, hairs scanty, long. Ostium weak. Ductus bursae short. Bursa with heavy fold, subcylindrical, basal half spined with large irregular spines. Scabiosata, Bork. 4 — 3 Valva long, rather narrow. Labides well spined. Cornuti two strong, with few heavy dentations; the larger one with about five teeth; the smaller one with about three, and a large base. Coremata globular, hairs long. Saccus rounded. 48 Ostium weak, narrow. Bursa subcylindrical, panni- cular. Extensaria, Frr. 4—3 Valva broad, narrows quickly to the tip. Cornuti five, one broad, scobinate; one small, scobinate; one plain, pointed; one long, scobinate; one plate with base. Coremata sessile, hairs short. Saccus rounded. Ostium weak. Ductus bursse long. Bursa elongate, cylindrical, spined above and on lower third, spines long. Succervturiata, L. 6—3 Valva very pointed. Cornuti four, three large, thickly scobinate; one narrow, plain with base. Coremata long, extensile. Saccus rounded. Ostium weak. Ductus bursse short. Bursa very large, pannicular. Ductus seminalis wide, large. Subfulvata, Haw. 6—3 Valva very pointed. Cornuti four, three large, coarsely scobinate, teeth large; one narrow, plain, with base. Coremata extensile. Saccus rounded. Ostium weak. Ductus bursac short. Bursa pannicular. Ductus seminalis large. Expallidata, Gn. 2—2 Valva broad, narrows quickly to tip. Cornuti four, with few, coarse, scobinations and base. Coremata pedunculate, hairs long. Saccus pointed. Ostium weak. Ductus bursoa short. Bursa large, pannicular. Trisignaria, H.-S. 3—1 Valva pointed, emarginate at anal angle. Uncus tapered. Cornuti two, one scobinate, one large, heavily scobinate, with base. Coremata sessile, hairs long. Saccus rounded. Ostium weak. Ductus bursse short. Bursa pannicular, patches of spines above, lower two-thirds spined. 49 Goosensiata, Mab. Minutata, Gn. 12—6 Knautiata, Greg. 2—2 Absinthiata, Clerk. 8—4 We can see little difference in these three forms. We had considerable difficulty in obtaining reliable material for knautiata, many specimens sent as this species show only assimilata genitalia. There is little doubt it is only a variety of minutata. Valva fairly large. Cornuti five, four scobinate, one plain with base. Coremata sessile, hairs many, long. Saccus rounded. Ostium weak. Ductus burses short. Bursa panni- cular. Assimilata, Gn. 10—5 Valva generally smaller than preceding species. Cornuti four, three scobinate, one with base. Coremata globular, hairs long. Saccus rounded. Ostium weak. Ductus bursae short. Bursa instrate. Vulgata, Haw. 10—5 Valva almost pointed. Uncus small, sharp, point. Cornuti three, scobinate. Coremata globular, hairs long. Saccus rounded. Ostium weak. Ductus bursse short. Bursa pannicular. Valerianata, Hb. 3—2 Valva rounded. Cornuti two, one broad scobinate; one small finely scobinate. Coremata pedunculate, hairs long. Saccus rounded. Ostium weak. Ductus bursae short. Bursa pannicular, a very distinct central patch of spines. There appears to be a difference between our examples and that figured by Dr. Petersen. Irriguata, Hb. 3—4 Valva peaked. Uncus tapered. /Edceagus broad. Cornuti three, one scobinate; one scobinate with corrugated base; 60 one stout, semi-globular, scobinate. Coremata sessile, hairs few, short. Saccus rounded. Ostium weak. Ductus bursae short. Bursa pannicular. Dr. Petersen seems to have described and figured this species from a single specimen, sent to him by Herr Dietze, this specimen evidently had a wrong body that of linariata, which he figures as that of irriguata. Indigata, Hb. 10—6 Valva small, narrow, pointed. Cornuti appear to be fused with a dentate plate; there is a small base. Coremata sessile, hairs long. Saccus rounded. Ostium weak. Ductus bursae short. Bursa instrate, except a large patch of thickened chitine, forming the mouth of the ductus seminalis. Pimpinellata, Hb. 6—3 Valva pointed. Uncus pointed. Cornuti four, one large horn-like; one small horn-like; one pointed with base. Papillae large. Coremata sessile, hairs long. Saccus centrally indent. Ostium weak. Ductus bursse complicated, long, with a raised papilla. Bursa instrate. Virgaureata, Dbl. 4—8 Valva broad, rounded. Cornuti three, two pointed; one indefinite. Coremata sessile, hairs many. Saccus rounded. Ostium weak. Ductus bursae short. Bursa pannicular, weak. Petersen's figures and descriptions of the males of this species and castigata should be transposed, an evident mistake having occurred. The Paisley Pug. We have examined four specimens of the " Paisley pug " (W. H. Tugwell, Entomologist, Vol. xxv., p. 41, 1892), captured by " W. Watson, Paisley," and " Dunsmore, Paisley," and find they agree with virgaureata. Doubt was 51 expressed at the time as to whether the "Paisley Pug" was this species or castigata; and South, in " British Moths," 1908, p. 237, states : " A blackish form of castigata was formerly known as the ' Paisley Pug.' ' It is as well to state that the specimens examined by us as virgaureata, have the antenna of the male sparsely clothed with long hair; that of castigata being thickly clothed with short hair. Albipunctata, Haw. 3—2 Valva broad, slightly produced at anal angle. Uncus tapered, pointed. ^Edceagus broad. Cornutus sharp, slender, point bulbed, currugated to base. Coremata sessile, hairs very long. Saccus indent. Ostium weak. Ductus bursae small. Bursa with a broad spiny band round centre. Subnotata, Hb. 9—6 Valva broad; costa widens towards tip. Uncus tapered. JSdceagus large. Cornutus long, irregularly emarginate. Vesica heavily scobinate. Coremata large. Saccus rounded. Ostium weak. Ductus bursae short. Bursa pannicular. Tenuiata, Hb. 6—4 Valva peaked. Uncus short, pointed. Cornutus curved, base only. Coremata sessile, hairs long. Saccus rounded Ostium weak. Ductus bursae long. Bursa reniform, pannicular. Plumbeolata, Haw. 4—2 Valva broad, rounded. Uncus long, tapered. Cornuti three, one rounded, emarginate; one band and base. Coremata small, rounded. Saccus rounded. Ostium weak. Ductus bursae short. Bursa large, upper half spined. D 2 52 Inturbata, Hb. Subciliata, Gn. 4—3 Valva curved. Uncus tip rounded, tapered. .^Edceagus very narrow. Cornntus weak. Coremata sessile, hairs long. Saccus rounded. Ostium weak. Ductus bursre long, narrow. Bursa pannicular. Castigata, Hb. 6—4 Valva broad, peaked. Uncus long, tapered. Cornnti small two, one curved and base. Coremata rounded. Saccus rounded. Ostium weak. Ductus bursae short, spined. Bursa subglobular, instrate. Pulchellata, St. 8—3 Valva rounded. Uncus tapered. ^Edceagus long, slender. Cornutus long, tubular. Coremata round, hairs long. Saccus rounded. Ostium weak, very wide. Bursa subglobular, panni- cular, spines fine and widely apart. Linariata, Fb. 6—3 Valva peaked. Uncus tapered. /Edreagus shorter and more slender than pulcliellata. Cornutus tubular, shorter. Coremata sesile, hairs long. Saccus rounded. Ostium weak, very wide. Bursa subglobular, panni- cular, spines fine and widely apart. Pygmaeata, Hb. 2—2 Valva broad, rounded. Uncus tapered, single point. ^Edoeagus very broad. Cornuti four, one large, double horn form; one smaller horn form; one long band and base. Coremata globular, hairs long. Ostium weak. Ductus bursse very short. Bursa irregularly spined, a second bursa below. Togata, Hb. 4—4 Valva long, narrow. Labides are slightly differently mounted on their footstalks. The papillae are appressed, very broad and are not extended as in other species. Uncus tapered to a single sharp point. Cornutus large, bulbed. Coremata sessile, hairs long. Ostium fairly distinctly formed. Ductus bursae strong. Bursa large, pannicular, spines strong. Venosata, Fb. 8—4 Valva rounded. .Edoeagus short. Cornutus a single flattened spine. Coremata large, hairs long, clavate. Saccus deep, bluntly pointed. Ostium weak. Ductus bursae short. Bursa pannicular. Haworthiata, Dbd. Isogrammaria, H.-S. 8—4 Yalva rounded. Uncus very weak, bifurcate. Cornutus indefinite. Coremata rounded, hairs long, clavate. Saccus deep, centre indent. Ostium weak. Ductus bursae short. Bursa elongate, with a broad longitudinal band of spines. The uncus is unique as far as British species go. Calliclystis rectaivgulata, L. 14—5 Valva rounded. Labides modified, their junction with the valva terminating in a free curved spine; papilla at base appressed. Uncus not produced. JEdceagus short. Cornuti many in band. Manica spined in comparatively large and few spines, two large curved spines being conspicuous. Anellus attached to the manica by a patch of strong spines. Ostium weak, small. Ductus bursae long. Ductus seminalis strong. Bursa subglobular. Signa two lunate, scobinate bands of spines, one larger than the other. Dcbiliata, Hb. 8—5 Valva rounded. Labides modified. Papilla at base not appressed. Uncus not produced. ^Edoeagus short. Cornuti 54 many in band. Manica spined in comparatively many line spines, two large curved spines being conspicuous. Anellus attached to the manica by a lunate band of strong spines. Ostium weak. Ductus bursae long. Ductus seminalis well developed. Bursa subglobular. Signum a weak, triangular, scobinate patch. Chloroclystis coronata, Hb. 8—6 Valva narrow, wider below; costa arched. Labides with papilla at base appressed, spined, as in Eupithecia togata. Uncus single pointed, base extensive. /Edosagus simple. Juxta strong. Saccus rounded. Ostium encircled. Ductus bursao not thickened. Bursa pannicular, upper half spined. Gymnoscelis pumilata, Hb. 14—8 Valva narrow7, tapered to a point. Labides normal; no trace of papilla. Uncus single pointed, base extensive. /Edoeagus small, narrow. Cornutus an aglutinated mass of fine spines. Juxta base triangular, usual arms above, tiaccus squared, trilobed, bearing a non-extensile coremata of long slender scales at either side. Ostium weak. Ductus bursae short. Bursa pannicular. Collix sparsata, Hb. 13—6 Valva broad, rounded, deeply incurved towards the base of the outer margin; costa incurved. Labides long, narrow, curved; papillae at base appressed. Uncus hardly produced, short, wide, rounded, indent in centre. Anus decorated, base hardened chitine, upper edge set with long spines. /Edoeagus tapered. Cornutus a long shaft, digitate at the apex, the number of spines varying from five to ten. Anellus double lobed heavily spined at the apex. Saccus small, pointed. Coremata long pencils of hair springing from either side of the seventh and eighth segments. Ostium wide. Ductus bursae short. Bursa elongate, cylindrical, irregularly spined in upper half; delicately scobinate below. 55 Eulype hastata, L. 7—3 Valvula broad, rounded; costa short, thickened; sacculus strong, produced, pointed. Labides long, lobed, united by a delicate membrane, with a central thickened rod. Uncus short, strong. ^Edoeagus stout, spined below the orifice. Cornuti usually two strong, bulbed spines with corrugated base, or there may be three or even a single spine. Manica delicately scobinate. Juxta bilobed, centre produced, lunate. Saccus small, rounded. Coremata on ninth segment. Ostium strong. Bursa spined, semi-ovate patch of strong spines in thickened part. Signum a scobinate pointed patch. Ccrtata, Mb. 4—3 Valvula rounded; sacculus extended, tapered, curved. Labides long, united by a delicate membrane with a central thickened rod. Uncus short, strong. ^Edoeagus wider above. Cornuti four very heavy, long, spines. Manica delicately scobinate. Juxta broad above, narrow below, thickened centrally. Saccus very small. Coremata on ninth segment. Ostium strong. Ductus bursse short. Bursa with scobinate ridge above, and thickened on one side, having a triangular patch of spines where it joins the thinner membrane. Signum patch of long, slender, spines. Undulata, L. 4—3 Valvula rounded; costa reduced; sacculus extended, branch- ing into a lobe, and a long tapered arm. Labides long, united by a delicate membrane with a central rod. Uncus short, strong. /Edreagus orifice scobinate. Manica with strong, obtuse, spines. Juxta folded. Saccus small. Coremata long, extensile, on ninth segment. Ostium strong. Ductus bursae ovate, with ridge of spines. Bursa rounded. Signum arcuate, scobinate. 56 Sagittata, Fb. 7—3 Tins species seems to have always been included in the genus Cidaria, to which, however, it has little affinity. Its position appears to be close to this group, so that I place it here temporally under the generic name Eulype. Valvula short; costa thickened and produced beyond valvula; sacculus produced in a rounded prominence. Labides long, narrow, curved, hairy. Uncus not produced; pads raised, hairy. /Edoeagus short, stout. Vesica squamous. Manica finely spined. Saccus broadly rounded. Ostium encircled. Signum rounded, deep, scobinate. Mclanthiinae. Valva well developed, complex. Labides. Uncus often weak, and not produced. Not a compact group, there being a considerable difference in the coremata. Euphyia picata, Hb. 5—3 Valvula elongate; costa produced, foot shaped, heel upper- most. Uncus rounded. /Edceagus simple. Cornuti long band of spines. Manica strongly spined. Anellus slightly lobed. Saccus pointed, with a rounded, spatulate plate below. Coremata on seventh segment. Ostium wide, strong. Signum discoid, scobinate, strong. Unangulata, Haw. 6 — 3 Valvula rounded, emarginate and projecting towards the apex; costa produced, foot shaped, toe uppermost. Uncus rounded, indent. .SMceagus with rounded, spatulate plate at base. Manica strongly spined. Anellus slightly lobed. Saccus deep, rounded. Coremata on seventh segment. Ostium wide, strong. Signum discoid, scobinate, slightly variable in size. Melanthia procellata, Fb. 12—4 Valva rounded; costa incurved, thickened; sacculus extended in blunt point. Labides similar to Eupithecia 57 without papillae. Uncus weak, peaked, spined. ^Edoeagus stout. Cristae raised papillae at the base of the juxta. Saccus large, deep, rounded. Ostium wide, encircled. Ductus bursse wide, crinkled, spined. Bursa spined. Signum ovate, scobinate. Coenocalphe tcrsata, Hb. 3—3 Valva rounded; costa thickened; sacculus extended, tip tapered, curved. Labides similar to Eupithecia; papilla hairy. Uncus weak, not produced. 3Mceagus narrow, branching towards the orifice into a blunt, tapered, point, base wide, squared. Manica scobinate. Saccus tapered, broad. Coremata on ninth segment. Ostium wide. Ductus bursse thickened. Bursa, upper part with ctenoid spines, lower half instrate. Vitalbata, Hb. 3—3 Valva rounded; costa produced, slightly scobinate; sacculus produced, ending in a broad, deeply emarginate, plate. Labides similar to Eupithecia. ^Edoeagus, spoon shaped piece at orifice, base squared. Manica with strong, obtuse spines. Juxta broad. Saccus broad, rounded. Coremata on ninth segment. Ostium broad. Ductus bursae with ctenoid ridges of spines. Bursa instrate, upper spines strong. Aquata, Hb. 2—2 This species is included on the strength of J. W. Tutt's article "Entomologist's record," Vol. xii., p. 35, 1900. Valva rounded; costa thickened with hairy, triangular papillae midway; costal fold terminates in free pointed plate; sacculus extended, ending in a peaked plate. Labides similar to Eupithecia. /Edceagus short, squared at base. Cornutus one broad spine, emitting a smaller one from the base. Vesica with long band of minute spines. Manica scobinate ventrally, squamous dorsally. Juxta bifid. Saccus broad, shallow. Coremata on ninth segment. 58 Ostium with broad plate. Ductus bursae with long ctenoid ridge of spines. Bursa instrate. Lapidata, Hb. 3—3 Valva very complex; valvula rounded; costa a free arm, pointed; harpe an ovate plate; sacculus produced in long hairy arm. Labides. Uncus weak; pads raised, hairy. yEdoeagus squared below. Juxta broad. Saccus very large, pointed. Ostium with operculum. Bursa small. Signa, several very stout spines. PHilereminae. The immense valva seem to place these two species in a group by themselves, but the labides show them to be closely connected with the foregoing groups. Philereme vctulata, Schiff. 5—3 Valva very large, ovate; costa reduced; sacculus extended, curved, spatulate. Labides fused into an angular plate. Uncus long, slender, tip hamulate. Subscaphium very long, not decorated. ^Edoeagus with row of short spines at orifice. Juxta wide. Saccus rounded. Coremata on ninth segment. Ostium scobinate. Ductus bursae thickened. Bursa simple. Rhamnata, Schiff. 4—2 Valva very large, ovate; costa thickened; sacculus not produced. Labides narrow, tip hooked. Uncus long, slender, widened below, tip hamulate. Subscaphium very long, not decorated. ^Edceagus bulbed above. Cornuti curved band. Saccus rounded. Coremata on ninth segment. Ovipositor retractile. Ostium weak. Ductus bursse weak. Bursa simple. 59 Lobophorinae. Valva emargmate or pointed. Tegumen dorsally clothed with long, flattened scales, these may represent coremata of the ninth segment. Triphosa dubitata, L. 3—3 Valva rounded; costal arm produced, rounded; sacculus extended, branched. Labides short, without lengthy rods, rounded, hairy. Uncus long, pointed; pads hairy. ^Edoeagus simple. Manica thickly and minutely spined. Juxta broad. Cristse hairs numerous. Saccus full, rounded. Ostium strong. Ductus bursse long, fluted. Bursa simple. Berberata, Schiff. 6—3 This species which is usually included in the genus Anticlea seems to be distantly related to T. dubitata; as it can no longer be included in the genus Anticlea, I have temporally placed it here. Valva rounded; costa gibbose before the tip; sacculus extended in a rounded, spatulate plate. Labides short. Uncus slender. ^tEdreagus simple. Yesica spined. Cornuti two strong bands of toothed spines. Saccus pointed. Ostium strong. Signum arcuate, scobinate. Lobophora halterata, Hufn. 7 — 6 Yalvula curved, sharply pointed; costa a long, spined arm. Uncus broad, tapered. ^Edoaagus narrow. Cornuti long band of short spines. Manica spined. Anellus chitinised, tubular. Juxta rounded. Saccus bluntly pointed. Ostium wide, on either side there is a deep pocket, set in the skin of the seventh segment. Ductus bursse long. Bursa cylindrical, ovate. Signa two large, ovate, patches of short, sharp spines. Scxalisata, Hb. 6—3 Yal vnla curved, sharply pointed; costa a long, spined arm. Uncus broad, tapered, curved. JMreagus narrow. Cornuti 60 long band of short spines, which bends over above. Manica without spines. Anelius tubular. Juxta rounded. Saccus rounded. Ostium wide. Ductus bursse fairly long. Bursa ovate. Signa two large ovate patches of short, sharp, spines. Acasis virctata, Hb. 5—3 Valvula short; costa produced beyond the valvula; sacculus extended into a broad curved arm. Uncus narrow, curved, tapered, .^dceagus pointed. Cornuti band of short spines. Manica set with thick, short, spines. On either side of the juxta, at the base of the vaivae, is a patch of long slender spines. Saccus rounded. Ostium with plate, strong. Ductus bursse short. Bursa subglobular, with broad, circular band of short spines before the extremity. Nothoptcryx carpinata, Bork. 8—5 Valva deeply emarginate above; costa thickened; sacculus extended in a narrow curved arm. Uncus long, slender. zEdoeagus tapered, scobinate before orifice. Manica finely spined. Saccus rounded. Ostium wide. Ductus bursar very long, ctenoid. Bursa globular, instrate. Polycommata, Hb. 4—3 Valva deeply emarginate above; costa thickened; sacculus extended in long arm. Uncus long, narrow, slender. ^Edoaagus short, scobinate before orifice. Manica finely spined. Saccus broad, rounded. Ostium wide. Ductus bursao long, ctenoid. Bursa globular, instrate. Entephriinae. Valva rounded; costa thickened. Manica thickly and minutely spined. Anelius lobes or calcar. A clearly separated group, yet unmistakably closely allied. 61 Entephria multistrigaria, Haw. 3—3 Valva rounded; costa strong. Uncus narrow, tapered. ^Edceagus short, spined. Manica extended, thickly spined. Anellus lobes rounded. Juxta bearing, at either side, a papilla set with spines. Saccus rounded. Ostium weak, encircled. Signum elongate, scobinate. Caesiata, Lang. 6 — 3 Valva rounded; costa short, strong, produced at tip. Uncus long, tapered. JMceagus short. Anellus lobes small, hairy. Juxta narrow below and deeply cleft. Calcar produced in a long slender spined arm. Saccus large, rounded. Ostium partially encircled. Signum elongate, scobinate. Flavicinctata, Hb. 7—3 Valva rounded; costa widens out in a broad, flattened, peaked plate. Uncus long, slender. .ZEdceagus pointed. Manica finely spined. Anellus lobes extended on the costal fold. Calcar produced into long hairy arm. Saccus rounded. Ostium weak. Ductus bursse thickened. Signum elongate, scobinate. Olivata, Bork. 6—3 Valva wide, short, rounded; a transparent space between the costa and centre of valva. Uncus long, tapered ^Edceagns stout. Cornuti two patches of spines, one fine, the other strong. Manica finely spined. Anellus lobes short. Saccus rounded. Ostium weak. Signum irregularly ovate, scobinate. Amcebc pectinataria, G«., viridaria Fb. 5—3 Valva rounded; costa curved. Uncus very short, widely spread. ^Edoeagus curved. Cornuti two patches, one long, spines strong; the other shorter, spines weaker. Manica spined. Anellus lobes long. Juxta rounded, 62 extended above, a minute papilla on either side. Saccus rounded. Ostium weak, encircled. Ductus bursae very long, ribbed, scobinate towards the bursa. Signum a number of irregular spines in band. Cidariirvae. A rather compact group, composed of a few closely allied genera. The large simple valva, and the extended anellus lobes, often set with clavate scales, form the most dis- tinctive characters. Manica finely spined. The signum, when it occurs, is of small size, scobinate. Lamproptcryx. In this genus the tegumen clearly shows an articulation connecting the ninth and tenth segments by a hinge. The base of the upper half of the tegumen ring is constricted and produced in a pair of diverging lobes, these fit into a pair of patellae, developed from the transtilla, which are united centrally in suffumata by a little orb or ring. Manica finely spined. Pads of uncus spined. Salicata, Hb. 8—3 Valva long, narrow, rounded. Uncus long; pads with few hairs. ^Edoeagus sigmoid. Anellus lobes long, curved, tip hairy, surmounted by a single socketed, hamulate, spine. Saccus rounded. Ostium encircled. Ductus bursse scobinate. Signum raised, scobinate. Suffumata, Hb. 6—4 Valva long, narrow; costa thickened. Uncus long, slender; pads hairy. J3doeagus short. Cornuti two long scobinate bands. Anellus lobes long, clothed with long hair at the head and base, and a single long, falcate, spatulate spine, terminating in a whip-like hair. Saccus rounded. Ostium encircled. Ductus burssB very long. Bursa subglobular, pannicular. Ocellata, L. Valva long, narrow; costa thickened. Uncus long, slender; pads of three or four hairs. ,3Edceagus sigmoid, orifice scobinate in ridges. Anellus lobes long, rounded, set with short hairs and a single heavy, curved spine. Saccus rounded. Ostium broad.. Signum a long, scobinate, wavy band, widening at one end. Lygris. In this genus the anellus lobes are long and set with long clavate scales. The cornuti in each case form a double band of teeth. Manica finely spined. Pads of uncus not spined. Prunata, L. 5—3 Valva peaked, produced at anal angle. Uncus slender. ^Edceagus stout, large. Cornuti large, heavy mass of long, strong spines. Anellus lobes long, rounded, head clothe 1 with long, clavate scales. Saccus rounded. Ostium wide. Bursa simple, upper half thicker chitine Tcstata, L. 8—3 Valva peaked; costa thickened. Uncus long. ^Edoeagus stout. Cornuti two bands of spines. Anellus lobes long. head clothed with long, clavate scales. Saccus rounded. Ostium weak. SignKm rounded, scobinate, deep. Populata, L. 4—2 Valva peaked; costa thickened. Uncus long, slender. ^Edoeagus stout, short. Cornuti two bands of spines. Anellus lobes long, clothed above with clavate scales. Saccus wide, rounded. Ostium weak. Signum rounded, scobinate, deep. Associata, Bork. 3—4 Valva rounded, produced and hooked at anal angle; costa thickened. Uncus long. J3do3agus narrow. Cornuti two 64 patches of fine, short, spines. Manica finely spined, bilobed. Anellus lobes long, rounded, set with fine hairs. Saccus bilobed, centre indent. Ostium well developed, scobinate. Ductus bursffi thickened. Bursa subglobular, upper half thickened, without signum. Pyraliata, Fb. Dotata, L. 5—3 Valva incurved along the costa, forming a projecting point. Uncus long, slender, .ZEdceagus simple. Cornuti bands of short spines. Yesica scobinate. Anellus lobes long, stout, wider above, set with long, curved, clavate scales. Saccus broad, trilobed. Ostium weak. Signum rounded, scobinate. Cidaria. Yalva broad, rounded. Pads of uncus not spined. Aneilns lobes generally rounded, often set with broad, spatulate scales. Manica finely spined. Sitcrata, Hufn. 6—3 Valva broadly rounded. Tegumen long, narrow. Uncus long, slender. ^Edoeagus narrow. Cornuti patch of short, slender spines. Anellus lobes peaked, set with fifteen or sixteen spatulate spines, tips knobbed. Saccus squared, slightly lobed at either side. Ostium weak. Bursa subglobular. Signum long, irregular band of small scobinations. Miata, L. 3—2 Valva rounded. Uncus narrow. ^Edocagus short, stout. Cornuti large patch of short spines. Anellus lobes peaked, fifteen of sixteen falcate spatulate spines, tips pointed. Saccus slightly lobed at either side. Ostium weak. Bursa subglobular, without signum. 65 Immanata, Haw. 23 — 3 Valva rounded; costa not thickened. Uncus narrow. .ZEdreagus stout. Cornuti very large patch of stout spines. Anellus lobes rounded, spines curved. Saccus broad, centre indent. Ostium weak. Bursa elongate, upper half ridged. Signum ovate, entirely scobinate. Trimcata, Hufn. 19—4 Valva rounded; costa not thickened. Uncus narrow. JSdoeagus stout. Cornuti narrow patch of fine spines. Anellus lobes rounded, spines curved. Saccus broad, centre indent. Ostium weak. Bursa elongate, upper half ridged. Signum ovate, edge scobinate. Concirmata, Steph. 8—1 Valva rounded; costa slightly thickened. Uncus rather stout. ^Edoeagus stout. Cornuti large patch of long, fine, spines. Anellns lobes rounded, spines strong. Saccus broad, centre indent. Ostium weak. Bursa elongate, upper half ridged. Signnm ovate, centre free from scobinations. Silaceata, Hb. 4—3 Valva peaked; costa not thickened. Uncus short, ^doeagus wide, short. Cornuti band of short, narrow spines. Anellns lobes rounded, hairs short. Saccus large, bluntly pointed. Coremata on ninth segment. Ostium weak. Signum long, irregular, scobinate. Reticulata, Fb. 3—2 Valva peaked; costa thickened. Uncus short, tapered. ^Edceagus stout. Anellus lobes short, rounded, with short hairs. Saccus rounded. Ostium weak. Signum rounded, scobinate. 66 Fulvata, Fors*. 7—3 Valva broadly rounded; costa not thickened. Uncus fairly stout. .ZEdceagus curved, simple. Anellus lobes short, stout, clothed with strong spines. Saccus trilobed. Ostium weak. Signum scobinate. Plemyria bicolorata, Hufn. 7—4 Valva rounded; costa not thickened. Uncus tapered, tip hooked. .ZEdoeagus stout. Cornuti short, many in patch. Anellus lobes peaked, spined along the edge. Saccus indent at base. Ostium weak. Bursa subglobular, simple. Corylata, Thnb. 5—4 Valva rounded; costa incurved, tip pointed. Uncus slender, tip rugose. JMoeagus large, stout. Vesica scobinate. Manica finely spined. Anellus lobes long, set with long fine hair along the edge. Saccus broad, rounded. Ostium very wide. Bursa elongate, with patch of weak scobinations. Signum an angular plate. Pelurga comitata, Schiff. 5—5 Valva rounded; costa produced, pointed. Uncus long, hardly pointed, few hairs at base. .SDdoeagus stout. Cornuti large patch of spines. Manica finely spined. Anellus lobes rounded, set with hairs. Juxta wide. Saccus rounded. Ostium strong. Ductus bursae thickened. Bursa subglobular. Signum long, irregularly scobinate band. Thermae. Valvula rounded; costa well developed; sacculus extended. ^Edceagus ctenoid at the orifice. Anellus lobes strong, set with spatulate scales. Firmata is closely allied, the ctenoid spines on the ffidceagus are, apparently in this species, removed to the vesica. Thcra juniperata, L. 5—3 Valva rounded; costa thickened, emarginate, forming a projection; sacculus extended, strong. Uncus slender. 67 ^Edceagus surmounted by two, sometimes three strong thorns and some smaller ones. Anellua lobes spined. Saccus pointed. Ostium with circular plate. Bursa small. Cognata, Thnb. Simulata, Hb- 6—4 Valva rounded; costa thickened, gibbose at apex; sacculus extended, strong. Uncus slender, without pads. ^Edoeagus encircled by many slender, strong, thorns. Anellus lobes set with spatulate hairs, tips hamulate. Saccus pointed. Ostium strong with bilobed, squamous plate. Bursa small. Obeliscata. 23—4 Valva rounded; costa thickened, tip slightly produced, geniculate centrally; sacculus extended, spatulate, edge sometimes serrate, sometimes spined. Uncus slender, without pads. .ZEdoeagus narrow, surmounted by ten to twelve strong thorns. Anellus lobes set with broad, curved, spatulate, hairs. Saccus pointed. Ostium with bilobed plate. Bursa small. Variata, Schiff. 10—3 Valva rounded; costa thickened, tip slightly produced, geniculate centrally; sacculus extended, edge jagged, point sharp, curved. Uncus slender. JMceagus narrow, sur- mounted by a double row of many strong thorns. Anellus lobes set with curved, sharp, spatulate hairs. Saccus pointed. Ostium with bilobed plate. Bursa small. Firmata, Hb. 5—3 Although closely allied to four preceding species, firmata seems to form a separate genus. Valva rounded; costa thickened, acutely pointed at apex; sacculus extended, strong, pointed. ZEdoeagus plain. Cornuti several strong thorns. Juxta squared. Cristse a E 2 68 single spine at either side. Anellus lobes set with fine, spatulate hairs. Saccus squared. Ostium without plate, weak. Bursa small. Hydriomena rubcrata, Frr. 8—4 Valva rounded; costa thickened. Transtilla separated, forming slender arms set with few hairs. Uncus bilobed, wider above. ^Edoeagus simple. Cornuti many in band. Manica finely spined. Anellus lobes are represented by a raised fold arising near the base of the valvula, from which spring a number of clavate scales, also a slender spatulate spine: below this is a papilla emitting a curved spine. Saccus rounded. Ostium wreak. Ductus bursae strong. Bursa hardened on one-third obliquely, and lobed. Autumnalis, Strom. Trifasciata, Bork. 9 — 4 Valva rounded; costa thickened. Transtilla separate, forming slender arms set with few hairs. Uncus bilobed, narrower above. ^Edoaagus simple. Cornuti many, in band. Manica finely spined. Anellus lobes represented by a raised fold arising near the base of the valvula, from which spring a number of clavate scales, also a strong spatulate spine; below this is a papilla emitting a strong curved hook. Saccus rounded. Ostium weak. Ductus bursre strong. Bursa hardened on one-third not obliquely, and lobed. Furcata, Thunb. Sordidata, Fb. 18—6 Valva rounded; costa thickened, produced, tip pointed. Transtilla separate, forming strong naked horns, dentate at base. Uncus spatulate, widest above, apex deeply emarginate. ^Edceagus thickly set with heavy spines at the orifice. Manica spined. Cristse hairs absent. Anellus lobes represented by a raised fold arising near the base of the valvula, from which spring a number of pointed hairs, also from a separate base springs an irregular, curved spine, considerably widened towards the tip; below 69 is a papilla, emitting a strong gemculate spine, tip hamulate. Saccus bilobed. Ovipositor extensile. Ostium weak. Ductus bursse short, with thickened patch on either side. Epirrhoinae. Valvula full, like a bag; costa produced, pointed. Calcar usually short, tongue shaped, clothed with specialised scales. Coremata on seventh segment spiracled, very elaborate, bearing pencils of hair and large tufts of scales. Bursa contains a thickened, chitinous tube.- Signum discoid, scobinate. Epirrhoe tristata, L. 5—3 Valva with projecting lobe at anal angle; costa produced beyond valva, pointed; harpe a circular, raised, spined pad. Transtilla separate, peaked, sparsely spined. Uncus tapered. /£dceagus surmounted by a sharp, broad, hook of hardened chitine. Calcar broad, hairy before the tip, which is pitted with transparent, circular gemmae of vary- ing size, possibly glands. Saccus pointed. Coremata on seventh segment spiracled, very elaborate. (Drawn too high on the figure.) Ostium encircled. Ductus bursae thickened. Bursa with thickened ridge. Signum scobinate, deep. Rivata, Hb. 9—3 Valva with projecting lobe at anal angle; harpe raised, rounded, clothed with spines; below this nearer the base is a long ridge of spines; costa greatly arched, produced beyond valva, pointed. Transtilla peaked, hairy. Uncus long, slender. ^Edceagus surmounted by a sharp, pointed, broad, flanged, hook of hardened chitine. Calcar broad, set with clavate scales and tipped with a falcate hook. Saccus broad, squared. Coremata on seventh segment spiracled, very elaborate. 70 Ostium broad, squamous. Ductus bursse pitted. Bursa with thickened, scobinate, ridge. Signum deep. Altcrnata, Mull. Sociata, Bork. 15—4 Valva with projecting lobe at anal angle; harpe raised, rounded, clothed with spines; below this nearer the base is a long ridge of spines; costa hardly arched, produced beyond valva, pointed. Transtilla peaked, hairy. Uncus long, slender. ^9Moeagus surmounted by a sharp, pointed, broad, flanged, hook of hardened chitine. Calcar broad, set with clavate scales, and tipped with a falcate hook. Saccus broad, squared. Coremata on seventh segment spiracled, very elaborate. Ostium wide, strong, squamous. Ductus bursae fretted. Bursa with thickened, scobinate, ridge. Signum scobinate, deep. Galiata, Hb. 5—3 Valvula rounded; costa arched, produced beyond valvula, pointed; harpe raised, spined; below this is a raised papilla emitting curved spines. Transtilla lobed, hairy. Uncus tapered, slender. JMceagus short. Manica scobinate. Calcar broad, set with elongate, pointed, clavate scales, and tipped with a falcate hook. Saccus rounded. Coremata on seventh segment, spiracled, very elaborate. Ostium broad. Ductus bursae long. Bursa with thickened ridge. Signum scobinate. Rubidata, Fb. 6—3 Valvula reduced ; costa broadened out and extended beyond the valvula in a strong point. Transtilla separated, two hairy papillse. Uncus slender. JMceagus stout. Vesica with thickened folds. Cornuti short, stout, in band. Manica spined. Calcar short, rounded, head clothed with clavate scales. Saccus pointed. Coremata extensile on seventh segment, spiracled. 71 Ostium broad. Ductus bursaB with long, finely spined, ridge. Signum rounded, deep, scobinate. Cucullata, Hufn. 7—5 Valvula indent on outer margin; costa broadened out and extended beyond valvula, dentate on its inner edge, dorsally. Transtilla separated, two hairy papillae. Uncus slender. ^Edoeagus stout. Vesica with thickened folds. Manica coarsely spined. Calcar geniculate, head clothed with broad, spatulate, clavate scales. Saccus pointed. Coremata extensile on seventh segment, spiracled. Ostium broad, strong. Ductus bursse strong. Bursa with thickened, scobinate ridge. Signum rounded, deep, scobinate. Larentia cervinata, Schiff. 7—5 Valvula rounded; costa strongly curved, produced beyond valvula, pointed. Transtilla lobed, hairy. Uncus tapered, pointed. yEdceagus rather long, curved. Cornuti long, rugose band. Manica finely spined. Anellus lobes repre- sented by a raised peduncle on the costal fold, emitting a strong spine, and numerous long, curved, thickened hairs. Calcar wide above, and produced in a long curved groove, sparsely clothed with hair. Saccus rounded, produced upwards centrally. Ostium strong. Ductus bursae short. Bursa sub- globular. Signum irregular, strong, thickly scobinate. Mesoleuca albicillata, L. 6—4 Valvula rounded; costa produced, pointed. Transtilla peaked, scobinate. Uncus long, slender; pads hairy. JMceagus sigmoid, scobinate above. Anellus lobes represented by three very beautiful, finely scobinate, tapered, curved spines, springing from a projecting fold near the base of the valvula. Calcar curved, head set with barrel-shaped gemmae. Saccus trilobed. 72 Ovipositor qnadrilobed. Ostium broad. Signum pyriform, scobinate. Xanthorhoinae. Yalvula reduced; costa strongly developed. Calcar gener- ally long, with geniculate head. Manica heavily clothed with strong spines. Signum elongate, pyriform, band of distinct spines, overlapping. Xanthorhoe montanata, Bork. 8 — 5 Yalvula short, very narrow; costa greatly extended, free, curved, pointed. Transtilla peaked, hairy. Uncus long, slender, tapered. /Edoeagus simple. Manica set with broad, curved, short spines. Calcar geniculate, head set with short, curved hair. Saccus pointed. Ostium wide, rugose. Ductus burssp with two patches of spines. Bursa subglobular. Signum band of short spines. Fluctuata, L. 8—4 Yalvula peaked, small; costa not reaching tip. Transtilla peaked, hairy. Uncus long, broader towards centre. .Edceagus simple. Cornuti about four or five strong spines. Manica scobinate. Anellus with small canaliculus. Calcar geniculate, head clothed with curved hairs. Saccus pointed. Coremata on seventh segment, spiracled. Ostium wide, strong. Signum long, spined band. Fcrrugata, Cierck. 20—4 Yalvula reduced, peaked; costa thickened, produced, emarginate, pointed. Transtilla lobed, hairy. Tegumen hooded. Uncus falcate. Subscaphium a broad, tapered plate,- toothed at the extremity. ^Edoaagus slender, with four or five stout spines at the orifice. Manica heavily spined. Calcar geniculate, hairy. Saccus narrow, pointed. Coremata extensile, on seventh segment, spiracled. Ostium strong, with scobinate operculum. A small sac on either side of the ostium on the tergite. Signum an asymmetrical pateh of long, slender spines. 73 Unidentaria, Haw. 19 — 4 Yalvula narrow, peaked; costa thickened, produced, emarginate, dentate towards the tip. Transtilla lobed, hairy. Tegumen hooded. Uncus falcate. Subscaphium a broad plate, extremity toothed. zEdoeagus slender, with three or four spines at the orifice. Manica spined. Calcar geniculate, hairy. Saccus pointed. Coremata extensile, on seventh segment, spiracled. Ostium strong, with scobinate operculum. Signum a fairly symmetrical patch of slender spines. Designata, Hufn. 8 — 5 Yalvula rounded; costa thickened and produced into curved point. Transtilla lobed, hairy. Uncus long, slender. /Edoaagus wide. Cornuti three sets, a patch and a row of spines on the upper part of the vesica, and a thick patch at the orifice. Manica spined. Calcar geniculate, hairy. Saccus narrow, with circular plate. Coremata extensile on seventh segment, spiracled. Ostium weak. Ductus bursa? and upper part of bursa thickened, lower half scobinate. Bursa globular. Mimitata, Hb. 3—2 Valvula rounded, indent on the outer margin; costa thickened, considerably pointed below valva. Transtilla lobed, hairy. Uncus slender. JEdoeagus scobinate at orifice. Cornuti about six or seven short spines. Manica strongly spined, also with two long, stout, spines. Calcar geniculate, head clothed with hair. Saccus pointed, the point extended. Coremata on seventh segment, spiracled. Ostium with wide plate. Bursa simple, subglobular. Polygrammata, Bork. 1 — 1 Yalvula emarginate above; costa produced, pointed, projecting from midway is an angular fold, spined; sacculus produced, pointed. Uncus long, hastate. vEdoeagus almost sigmoid, at the orifice are two small spines, that 74 do not appear to be cornuti. Calcar produced, scobinate. Saccus rounded, with basal lobe. Ostium wide, thickened. Bursa simple. Orthonama vittata, Bork. 10—4 Valvula small, squared; costa a free, pointed arm, trans- versely rimose; sacculus free, rounded. Transtilla raised papillae, hairy. ^Edceagus long, with rounded plate at the base. (This formation also occurs in Xanthorhce designata.) Cornuti ovate patch of spines. Manica heavily scobinate and dentate. Juxta lobed. Saccus long, tapered. Ostium very wide, with operculum. Bursa simple. Ochyria quadrifasciaria, Clerck. 6—4 Valvula very small, rounded; costa short, thickly spined. Transtilla lobed, broad, hairy. Uncus slender. /Edceagus short, stout. Cornuti a number of long, slender, spines. Manica finely spined. Calcar rounded, hairy, producing centrally a thin, rounded, projecting plate. Saccus bluntly pointed. Coremata large, extensile, on seventh segment, spiracled, emitting from the upper part two strong, curved, spatulate, spines. Ostium weak. Ductus bursae narrow. Signum irregular, scobinate. Anticlea nigrofasciaria, Goze. 6—4 Valvula rounded; costa thickened, peaked before the tip, which is produced and bluntly pointed. Transtilla rounded, hairy. Uncus long, slender; pads raised, hairy. ^Kdceagus sigmoid. Cornutus a rimose plate. Manica finely spined. Calcar very tapered, spined with short, hamulate, spines. Saccus rounded. Coremata absent. Ostium broad. Ductus bursae thickened. Signum rounded, deep, scobinate. Earophila badiata, Hb. 6—4 Valvula rounded; costa thickened, and produced in a point beyond valva. Transtilla rounded, hairy. Uncus long, 75 slender; pads raised, hairy. ^Edoeagus stout. Cornuti numerous, long, thin in patch, bases corrugated. Manica finely spined. Calcar long, rounded, spined with hamulate spines. Saccus rounded. Coremata absent. Ostium broad. Ductus bursae thickened. Signa two, one small, pointed, scobinate; one rounded, with long spines. Camptogramma bilineata, L. 6—5 Valvula practically absent; costa a strong valve-like appendage, heavily spined at the rounded apex, which is free. Sacculus small, widely separated. Transtilla lobed, hairy. Uncus long, slender, tapered, base large, bulbed, ^doeagus slender, lipped at orifice. Manica set with short, heavy, spines. Calcar broad, tapered, curved, spined (tongue shaped). Saccus small, pointed. Coremata extensile on seventh segment, spiracled. Ostium a series of skin folds. Bursa very small. Pcrcnoptilota fluviata, Hb. 6—3 Valvula very small; costa a wide, ovate plate, heavily spined at the rounded apex, which is free; sacculus much reduced. Transtilla rounded, hairy. Uncus slender. ^Edceagus narrow, lipped at orifice. Manica set with long spines. Calcar a thickened, chitinous, rounded plate, not hairy. Saccus broad, deep. Coremata extensile on seventh segment, spiracled. Ostium narrow. Bursa simple. Mcsotypc virgata, Rott. 4—3 Valvula rounded; costa complex, scobinate above; sacculus extended, terminating in hairy papillae. Transtilla divided, produced in two dentate curved arms. Uncus bifurcate with long, slender, central rod. -ZEdceagus stout. Cornuti about eight or nine long, slender spines. Manica with large spines. Anellus lobes rounded, hairy. Saccus rounded. Coremata on seventh segment, spiracled. Ostium encircled. Bursa pannicular. 76 Ortholithinae. Valva very complex. Uncus is weak, with raised hairy pads. The principle features are the highly developed canaliculus, and the modification of the costa, which assumes the form of a broad plate. Coremata on seventh segment. The signuin is discoid, scobinate, similar to that found in the Cidariince. Ortholitha plumbaria, Fb. 5—4 Talvula rounded; costa produced, pointed; sacculus strong, produced, pointed. Uncus weak, pointed; pads raised, spined. JMoeagus with strong, scobinate cornutus. Manica heavily spined with short spines. Anellus lobes stout, hairy. Cristae produced into hairy papillae. Canaliculus a narrow curved groove. Saccus rounded. Ostium wide. Ductus bursae large, thickened, with strong hooked tube, spining strong. Bursa rounded. Limitaria, Sco^. 6—4 Valvula reduced, peaked; costa very short, set with ovate patch of spines; sacculus greatly extended, fused to central part of valva, terminating in a rounded plate of thin chitine. Uncus short, soft; pads raised, spiny. /Edreagus large, stout. Cornutus bulbed. Manica set with very strong, curved spines. Anellus lobes stout, hairy. Cristae produced into hairy papilla?. Canaliculus a long, curved, groove. Saccus rounded. Coremata on seventh segment, spiracled. Ostium wide. Ductus bursse short, thickened, with a hook. Bursa thickened above. Signum ovate, scobinate. Bipunctaria, Schiff. 9—5 Valvula reduced, rounded; costa very short, broad, pro- duced, pointed; sacculus produced beyond the valva, pointed. Uncus weak, pointed; pads raised, hairy. .Edoeagus large, stout. Cornutus long, dentate. Manica heavily spined. Anellus lobes separated into two arms, 77 clothed with long, clavate, scales. Canaliculus a long groove. Saccus rounded. Coremata on seventh segment. Ostium large. Ductus bursse short, with a hook. Bursa thickened in parts. Signum ovate, scobinate. Chesiadinae. The remaining six species appear to form a distinct group, in which the chief characteristic is the acicular /Edoeagus. The peculiar form of the female connects plagiata and paludata together, although the male organs show a great divergence. Spartiata and rufata are closely allied in both sexes. The formation of the canaliculus in these latter species is peculiar. It possesses at either side a hollow raised protruberance , which no doubt acts as a guide for the slender a^dceagus. Anaitis plagiata, L. 3 — 3 Valva very large, elongate, bifurcate at apex. Transtilla separated, naked, tips curled, rounded. Uncus tapered, very broad at base. jEdceagus acicular, sigmoid. Ductus ejaculatorius scobinate. Anellus lobes peaked. Juxta strong. Saccus broad, deep, rounded. Ostium narrow. Ductus bursa3 long, thickened, bifurcate, at the junction with the bursa. (Carsia) paludata, Thunb. 5—4 Valvula short; costa broad, emarginate, produced in pointed arm from the centre of the valva; sacculus pro- duced, very weak. Transtilla lobed, hairy. Uncus clavate; pads hairy. .-Edoeagus acicular, sigmoid. Ductus ejaculatorius broad, ovate, scobinate. Anellus lobes produced, hairy. Cristae forming papilla3 at the base of the juxta. Saccus very long, pointed. Ostium small, weak. Ductus bursse thickened and bifurcate at the junction with the bursa. Chesias spartiata, Fues. 6—4 Valva rounded; costa incurved, pointed, not produced. Uncus long, widest towards centre; pads with three or four 78 hairs. ^Edoeagus acicular. Cornuti short band of very fine spines. Anellus lobes peaked, hairy. Canaliculus a long groove, with a pair of raised guides. Saccus bluntly pointed. Ostium narrow. Bursa subglobular, pannicular, spines large. Rufata, Fb. 6—4 "Valva rounded; costa mcurved, pointed, but not produced. Uncus long, widest towards centre. ^Edceagus acicular. Cornuti long band of very fine spines. Anellus lobes peaked, hairy. Canaliculus a long groove, with a pair of guides. Saccus long, pointed. Ostium weak. Ductus very long, lobed before reach- ing the bursa. Bursa instrate, spines very large and wide. Lithostege griseata, Schiff. 4—4 Valvula rounded; costa fused to centre of valva, where it is toothed and produced in a long spined costal arm. Uncus short; pads hairy. JEdceagus acicular. Anellus lobes peaked, hairy. Juxta strong. Canaliculus hairy ridges at base. Saccus rounded. Ostium wide. Bursa pannicular. Odczia atrata, Dup. 14—5 Valvula very short; costa broad, produced; sacculus pro- duced; harpe a raised papilla. Uncus short, stout, tapered, deeply set in the tegumen. JMoeagus acicular, with toothed plate before the orifice. Anellus lobes small, hairy. Saccus pointed. Ostium wide. Ductus bursae short. Bursa subglobular. GLOSSARY. The greater number of the terms used in this volume are taken from the following works: — "Explanation of terms used in Entomology," by John B. Smith, Sc.D., 1906 (abbreviated J.B.S.); " The Dictionary of Ento- mology," by N. K. Jardine, F.E.S. (Jar.); " Genitalia of British Noctuidse," by F. N. Pierce, F.E.S. (Noc.). The remaining terms are those either used for the first time, or with a special meaning in this work (P.). Acicular: needle shaped. J.B.S. /Edoeagus : (Gr. aidoia, secret parts) hard cylindrical part of penis. ? Aglutinate: fastened closely together; welded. Jar. Anal angle: the angle at the junction of apical and outer margins of the valva. Noc. Anellus: (L. anellus, a little ring.) the projecting cone into which the sedceagus is withdrawn. P. Anelus lobes: the projecting lobes at either side of the anellus. P. Apex: the top; furthest point from base. P. Appressed: closely applied to; pressed against. J.B.S. Arcuate: bow-like. Jar. Arm: a rod produced from a margin. P. Articulation: the place where two parts are jointed. J.B.S. Asymmetrical: not alike on two sides. J.B.S. Atrophid: wasted away; unfit for use. J.B.S. Base: the bottom; furthest from apex. P. Band: in cornuti to indicate a linear series. F. Bifid: once divided to base. P. Bifurcate: once divided, but cot to base. P. Bilobed: bearing two lobes. J.B.S. Bluntly rounded: more pointed than rounded. P. Bluntly pointed: more rounded than pointed. P. Branched: produced from a main stalk. P. 80 Bulbed: with base expanded into a bulb. Noc. Bursa — bursa copulatrix: sac in female; receptacle of male sperm. P. Calcar: a spur, J.B.S. An arm projecting from the juxta, formed by the union of the anellus lobes. P. Canaliculus: (L. canaliculus, a gutter) the central pro- jecting lip or groove of the juxta. P. Cardinate: (L. cardo, a hinge) hinged. P. Cerata: (Gr. keras-ata, a horn) lateral arms produced from eighth sternite. P. Chitine: material forming harder parts of insect's body; a secretion of the eperdermis differing from horn by its insolubility in boiling liquor potassse. J.B.S. Clavate: knobbed; clubbed. Jar. Cleft: split. J.B.S. Coalesced!: grown together. J.B.S. Corema-ata: (Gr. corema, a brush) lateral extension of pleura of segment. Haartsac of Zander. » P. Cornutus ti: (L. cornutus, a horn) a spiny armature of vesica. Noc. Corrugated: alternate ridges and channels. J.B.S. Costa: (L. costa, a rib) the upper edge of the valva, gener- ally thickened, occasionally free. P. Costal fold: the margin of the valvula springing from the articulation, generally fused to the costa. P. Crinkled: of the form of crushed paper. P. Grists : (L. crista, a tuft) the patch of hairs at either side of the juxta. P. Ctenoid: (Gr. kleis-ktenos, a comb) comb-like. P. Cygnate: like a swan's head. Noc. Dentate: toothed. J.B.S. Digitate: finger-like. J.B.S. Discoid: rounded, flattened. P. Dorsal: the upper surface. J.B.S. Ductus bursae : the tube connecting the ostium with the bursa. P. 81 Ductus ejaculatorius : the tube through which the seminal fluid is ejected into the bursa. J.B.S. Emarginate: a piece cut out of margin. Jar. Encircled: used when sides of ostium connect directly with the rods of eighth segment and with the segmental division. Extended: used when the sacculus or other organ is lengthened and free. P. Falcate: sickle-shaped. Jar. Femur: the thigh. J.B.S. Floricomus: (L. flos, flower; coma, hair) used to denote ovipositor when elaborately set with flattened spines and hairs. P. Footstalk: used to denote the rods supporting the labides. P. Free: used when parts that are usually fused are separated. P. Furca: (L. furca, a two-pronged fork) the forked organ arising below the juxta. P. Fused: welded together. P. Fusiform: spindle-shaped. J.B.S. Ceniculate: elbowed. Jar. Gemmae : buds. P. Cibbose: hump-backed. Jar. Gnathos: (Gr. gnathos, the lower jaw) lower jaw of uncus, which encloses the anus. P. Hamulate: having an end hooked. P. Harpe: (Gr. harpe, a scimitar) (a grappling iron, Gosse). used in this work for armature of valva. Equiva- lent to harpe of Gosse and Clasper of Noctuidac. Heavily: used when spines, scales or hairs are abundant. P. Hooded: bent over in the form of a hood. P. Hastate: scimitar shaped. P. Indent: with edge notched centrally. P. Instita: (L. instita, a flounce) a free apron at the ostium. P. 82 Instrate: (L. insterno, to spread over, to cover) used when the bursa is completely covered with spines. P. Intortate: twisted. P. Jagged: edge irregularly broken into points. P. Juxta: the thickened ventral plate of the anellus. P. Knobbed: with a rounded head on a neck. P. Labis, Labides: (Gr. labis, a pair of tongs) organs arising from the transtilla. P. Lobe: prominent rounded process or excrescence on a margin. J.B.S. Lunate: crescent shaped. Jar. Manica: (L. manica, a long sleeve) the introvertable skin uniting the sedceagus with the anellus. P. Mappa: (L. mappa, a napkin) apron covering cerata on the eighth segment. P. Obtuse: with rounded termination, blunt, not pointed or acute. Jar. Ootavals: terminals on anal edge of eighth sternite. P. Operculum: a lid, small valvular appendage. Jar. Orifice: opening of sedoeagus at its junction with the vesica. P. Ostium: (L. ostium, a door) opening which receives the penis in copulation. P. Ovate: egg shaped or oval. J.B.S. Ovipositor: the female organ from which the eggs are extruded. P. Pads: used for hairy parts at base of uncus. P. Pannicular: (L. panniculus, a little patch) locally covered. P. Papilla: raised protruberance. P. Patella: plate-like part of a joint. P. Pedunculate: stalked. Jar. Penis: the whole intromittent organ of male. P. Peaked: tapered, attenuated. P. Peniculus: (L. peniculus, a little brush) the hairy pads at either side of the tegumen below the uncus. Noc. Pips: markings like apple seed. P. 83 Pistillate: (L. pistor, a pounder) in the form of a pestil. P. Plate of ostium : flattened chitinous plate surrounding the ostium. Produced: extended beyond. P. Pyriform: pear-shaped. Jar. Quadrilobed: four lobed. P. Reniform: kidney shaped. P. Retractile: capable of being extended and with- drawn. Jar. Ribbed: with longitudinal ridges. P. Ridged: with blade-like strengthening of a surface. P. Rimose: bark-like. Jar. Full of cracks. J.B.S. Ringwall: a term used by Zander indefinitely for mem- braneous surround of penis. Rose thorn: like the flattened angular spine on the stem of a briar. P. Rugose: wrinkled. Jar. Sacculus: (L. sacculus, a little bag) the lower part of the valva. Noc. Saccus: (L. saccus, a bag) the sternal portion of the tegu- inental ring — vinculum of Noc. Baker. Scobinate: (L. scobis, filings). Surface covered with small rasp-like teeth. Noc. Serrate: saw-toothed, teeth set towards one end. J.B.S. Sessile: closely seated. J.B.S. Scaphium: (Gr. skaphe, a boat) dorsal armature of anus. (Wrongly applied by others to gnathos.) Gosse. Sigmoid: S. shaped. J.B.S. Signum: (L. signum, a sign, a token) an internal arma- ture of the bursa. P. Simple: used when no complications are present. P. Sinuous: curved in and out. J.B.S. Socii: (L. socius-i, a companion) the entended hairy pads of the uncus. P. Spine: a sharp process. J.B.S. Squamous: scaly. J.B.S. 84 Spoon-shaped: used of concave projections of aedceagus. P. Spat u late: broad, flat. P. Stellate: star shaped. J.B.S. Stern ito: ventral plate of segment. P. Stout: strong, broad. P. Sub-cylindrical: not completely cylindrical. P. Subglobular: not completely globular. P. Sub-ovate: not completely ovate. P. Subscaphium : ventral thickening of anus. Noc. Tapered: gradually diminishing in width. P. Teeth: single widened spines attached to surface. P. Tegumen: (L. tegumen, a cover). See introduction. B. White. Tergite: dorsal plate of segment. P. Thumbed : used for lobed projection from the orifice of the sedoaagus. P. Tibia: the joint of the leg between the femur and tarsus. P. Thorn-like: as a tapered spike. P. Tip: the extremity. Transtilla: (L. transtilla, a small cross beam) the internal extension of the costa. P. Trif id: twice divided to base. P. Truncate: shortened. P. Uncus: (L. uncus, a drag hook) terminal organ of male body. Gosse. Valva-ae: (L. valva, a folding door) the whole lateral flange-like process articulated by the tegumen. =Harpe of Noc. Valvula: the thin part of the valva, lying between the costa and sacculus. P. Ventral: the under surface. P. Vesica: (L. vesica, a bladder) the °vtrovertable portion of the ductus ejaculatorius. P. 85 LIST OF SUBSCRIBERS Whose support the Author gratefully acknowledges. Adams, Bernard G., F.E.S. (2 Vols.) Adkin, Kobert, F.E.S. (3 Copies) Allen, Edward, G. and Son (2 Vols.) Allen, J. E. K. Asher and Co. Bacot, Arthur W., F.E.S. Barraud, Philip J., F.E.S. Bethune-Baker, G. T., F.L.S., F.Z.S., F.E.S. (President of The Entomological Society). Bird, Henry, Kye, N.Y. (2 Vols.) Blair, Kenneth G., F.E.S. Borrer, William. Bostock, E. D., F.E.S. Bowater, W., F.E.S. Bowles, E. Augustus, M.A., F.L.S., F.E.S. Briggs, T. H., M.A., F.E.S. Brooklyn Institute of Arts and Sciences, New York. Buckley, E. Gladstone. Burrows, The Kev. C. R. N., F.E.S. Cairo Ministry of Agriculture (2 Vols.) Campbell-Taylor, J. E. Chadwick Museum, Bolton. Chapman, Thomas Algernon, M.D., F.Z.S., F.E.S. (2 Copies) Christy, William M., M.A., F.L.S., F.E.S. (2 Vols.) Cockayne, E. A., F.E.S. (2 Copies) Cornell University Library, Ithaca, N.Y. (2 Vols.) Cotton, John, M.R.C.S., L.R.C.P. Curtis, W. Parkinson, F.E.S. Day, Geo. 0. F.E.S., Vancouver (2 Vols.) $6 Dominion Museum, Wellington, New Zealand (2 Vols.) Duckinfield- Jones, E., F.E.S. Edelsten, H. M., F.E.S. (2 Copies) Edwards, Stanley, F.L.S., F.Z.S., F.E.S. Fletcher, T. Bainbrigge, E.N., F.E.S., Bihar, India. Fletcher, William Holland B., M.A., F.E.S. Eraser, Capt. F. C., M.D., I.M.S., F.E.S., Madras (2 Vols.) Friedlander, R. und Sohn, Berlin (10 Copies) Fry, Edward. Gardner, John, F.E.S. Garnett, Theodore, M.A. (2 Vols.) Gibbs, Arthur Ernest, F.L.S., F.Z.S., F.E.S. Green, Edward D. (2 Vols.) Hanbury, Frederick J., F.L.S., F.E.S. (2 Vols.) Harper, William E. (2 Vols.) Heath, G. H. Hiles, Henry E. (2 Copies) Home, Arthur, F.E.S. Jackson, W. Hatchett, M.A., D.Sc. Johnson, Alfred. Johnson, C. F., F.E.S. Junk, Wilhelm, F.E.S., Berlin (2 Copies) Kenrick, Sir George Hamilton, F.E.S. (2 Vols.) King, James J. F.— X., F.E.S. Larkin, William. Leigh, H. S., F.E.S. Levett, The Eev. Thomas Prinsep, F.E.S. (2 Copies) Liverpool Reference Library, per Geo. T. Shaw, F.E.S. Lyman, Henry H., M.A., F.R.G.S., F.E.S., Montreal. Macphail, James D. 87 Mally, C. W., M.Sc., F.E.S., F.L.S., Capetown (2 Vols.) Mansbridge, William, F.E.S. Manchester Museum, per Dr. W. M. Tattersall (2 Vols.) Melvill, James Cosmo, D.Sc., M.A., F.L.S., F.E.S. Merrifield, F., F.E.S. (2 Vols.) Metcalfe, The Kev. J. W., F.E.S. Meyrick, Edward, B.A., F.R.S., F.Z.S., F.E.S. Mitchell Library, Glasgow. Monteiro, Dr. Antonio Augusto de Carvalho, F.E.S., Lisbon (2 Vols.) National Museum of Wales, Cardiff (2 Vols.) Newstead, Professor R., M.Sc., A.L.S., F.R.H.S., F.E.S. Nicholson, C. Nottingham Free Natural History Museum, per J. W. Carr (2 Vols.) Oxford University Museum Library, Hope Department per Prof. Edward B. Poulton, D.Sc., F.E.S. Pierce, Miss Elizabeth. Pierce, Grenville. Porritt, George T., F.L.S., F.E.S. Prout, Louis Beethoven, F.E.S. Pryce, George (2 Vols.) Quaritch, Bernard (4 Copies) Radcliffe Library, Oxford. Raven, The Rev. C. E., M.A. Reverdin, Dr. Jaques L., Geneve. Robinson, Lady, F.E.S. Rosen, Kurt, Baron, F.E.S., Munich (2 Vols.) Routledge, George Bell, F.E.S. Ry lands, Ralph. St. John, Winstan St. A. Scott, Hugh, M.A., F.E.S. 88 Sheldon, W. G., F.E.S. (2 Vols.) Sich, Alfred, F.E.S. Smith, Andrew T. South African Museum, Capetown (2 Vols.) Standfuss, Prof. Dr. M., Zurich (2 Vols.) Sterk, Dr. Theod., Berne, Switzerland. Stonehain, Hugh F., Lieut., F.E.S. (2 Vols.) Storey, Gilbert, F.E.S. (2 Vols.) Stott, C. E. Tait, E. Junr., F.E.S. Tolman, Adams, per W. T. Haydon, Concord, Mass. Tonge, Alfred E., F.E.S. Trinity College Library, Dublin, per Alfred de Burgh. Tring Zoological Museum (2 Vols.) Turati, Conte Emilio, F.E.S., Milan (2 Vols.) Turner, Henry Jerome, F.E.S. Watkins and Doncaster (10 Copies) Webster, William, M.K.S.A.I. Wellcome Tropical Research Laboratories (Entomological Section), Khartoum (2 Vols.) Wesley and Sons (2 Copies) West, Leonard C2 Vols.) Whittaker, Oscar, F.E.S. Whittingham, The Rev. W. G., F.E.S. (2 Vols.) Wood bridge, Francis C., F.E.S. Wood, H. Worslev. P/ate/. _ Platefl. (J '/•'«/„-. Plate VI. Plate Wl Plate IX PlafeXJ \ 3& X. {/ ' ^ r •& / (\ \ Sr- Lv :' •/ ! / Pfatr.Xlll PlateXVH PlalrXXJ. PlateXXtt PiateXXW X <7 Plate XXIX PlateXXX PlaleXXX/. PfateXXX/y \ \J Plate XXXIX. _ l P late XL J/ Plate XL M PI ate XL Y. Plate XL VI. UCSB 000 657 5,2