Famity—CETONIIDA. Sus-Famity—CREMASTOCHEILIDES. 5 
tuberculum parvum obtusum productis, posticis acutis, margine postico parum sinuato, supra basin scutelli vix 
producto ; linea media longitudinali alterisque duabus obliquis e medio marginis antici pone medium extensis ; 
postice in maculam obscuram desinentibus ; alterisque duabus parvis ante scutellum; elytris irregulariter fusco- 
nigro maculatis, humeris maculaque ovali in singulo prope scutellum fasciaque valde indistincta submediana 
obseuris, lateribus luteo et nigro alternatim maculatis; pedibus longis obscure luteis, tibiis in medio nigro- 
fasciatis. (Mas.) 
Long. corp. lin. 53. 
Habitat ; Old Calabar. In Mus. Hopeiano Oxoniz. 
The dissections accompanying the figure of this species are taken from the unique specimen of the male in 
the Hopeian Collection. The mandibles (fig. 3.2) have the upper edge of the basal portion and the outer edge 
of the horny knife-like external part setose. The maxille (fig. 34) have the upper edge of the flat square 
mando and the galea densely clothed with long hairs; the mentum (fig. 3c) is obconical, notched on each side 
below the anterior rounded angles, for the reception of the palpi; the anterior margin is widely but not very 
deeply emarginate. The markings on the upper surface of the body are produced by squamosity, and are not 
at all clearly defined. The legs are long and slender, the fore tibiw have two sharp teeth at the extremity, and 
a third much shorter between the base and the middle; the middle tibie are rather short and much curved, 
and the hind tibie are long and straight; the tarsi are long and slender. The pro- and meso-sterna are simple 
and unarmed, the mesosternum being obliquely obtuse. 
Sus-Faminry—CREMASTOCHEILIDES. 
Inter species familiam Cetoniidarum constituentes, hae insecta (quorum genus typicum Cremastocheilus 
Knockii est) e ceteris facile distinguuntur magnitudine (pro majori parte) minori, coloribus obscuris, et habitu 
alieno, interdum Trogides simulantia, necnon structura orali que in typicis speciebus omnino insolita est. 
Species hujus subfamilie, que hie monographice tractavi, caput habent mediocre rarissime cornutum, clypei 
margine antico sepe reflexo. Mandibule inter os clause, parve bipartite, parte externa cornea, valida et por- 
recta; parte interna minore membranacea subquadrata, dente lato molari ad basin intus instructa. Maxille 
galea cornea valida curvata sepe falciformi extus brevissime setosa et 1- vel 2-dentata; mandone breviori apice 
interno 1- vel 2-dentato. Mentum (labium, Burmeisteri) magnum, spe maximum, os majori parte vel omnino 
tegens, corneum, planum vel concavum vel medio plus minusve angulatum. Labium bilaciniatum et setosum, 
in medio pagine interne menti affixum. 
Prosternum sepissime in spinam ante coxas anticas porrectum aut deflexum; mesosternum angustum, 
sepissime muticum, rarius planum et subacutum. Epimera mesothoracica supra detecta, horizontalia. 
Abdomen subtus 6-annulatum, pygidio ab elytris haud tecto, sepe carinato; spiracula 2 apicalia sepe 
conica. Pedes validi breves, tarsis sepissime 5- interdum 4- vel 3-articulatis. 
This group, by means of such genera as Uloptera and Macroma, is related to the more typical Cetoniide, 
through such genera as Diplognathus and Anoplocheilus, with which indeed Mr. MacLeay united the more 
aberrant Cremastocheilides (in his memoir on the South African Cetoniide) ; whilst the more typical Cremas- 
tocheilides were formed into a separate group, Cryptodinus, with Cryptodus as the leading genus. This last- 
named genus however, as I proved by careful analysis in a memoir published in the fourth volume of the 
Transactions of the Entomological Society of London (1845-1847), belongs to the Dynastidi, and is in no wise 
related to the Cremastocheilides except in the obscure colours and flattened form of the species. In the Berlin 
Museum another Dynastideous genus is also arranged with these inseets—Cryptodontes Dej. Burm. (Lepto- 
gnathus Westw.)—the anatomical details of which I have also elucidated in the same memoir. 
But very little is known of the habits of the insects of this family. Dr. Schaum found one specimen 
of Cremastocheilus canaliculatus in the nest of a large black species of ants on the Catskill Mountains; and 
Professor Haldeman, in Pennslyvania, found several specimens of two species in ants’ nests. Herr Guienzius 
found Cwnochilus setosus in ants’ nests, the individuals being covered with the ants, which seemed to suck 
from them a gummy exudation. He also discovered Scaptobius aciculatus in ants’ nests, in company with 
Paussus cucullatus ; also specimens of Lissogenius were found by him in similar situations. 
