Genus Hydaticus. 215 
(et praesertim apud basin) fiisco-adumbrato, basi ipsa usque 
ad margines tenuiter fusco-nigra; e/ytris subparallelis, sub- 
tiliter undique puncta in striis duabus ordinata disponuntur ; 
hee striee interdum penitus obsoletee sunt; ad suturam etiam 
rare puncta minuta serie ordinata apparent; elytra nigra vel 
fusco-nigra, margo autem usque ad apicem ipsum rufo-flavus, 
vitta etiam transversa flava ad basin (hee, forma eequali, 
tenuis nec suturam nec marginem attinet); tres alize macule 
undique apparent (nec forma distinctee nec omnino flav 
sed nigro-maculatz aut irrorate), 1™* apud marginem ante 
medium, haud vittam mediam attinet, nigro-mixta, sed ad 
marginem omnino flava, 24 pone medium vitta arcuata haud 
suturam attingit, figura ineequalis, nigro-maculata, 3* ad 
apicem plaga etiam flava haud suturam attinet; antennis 
flavis: corpore subtus rufo-fusco; pedibus rufo-flavis, fe- 
moribus posticis fuscis. 
Long. corp. lin. 7; lat. lin. 4-4. 
A very distinct and well-marked species, and quite unknown to 
Dr. Schaum (to whom I sent a specimen for examination), as 
well as to myself, until it was received by me from my friend 
Mr. Ussher from Cape Coast Castle in 1863; Mr. Ussher reported 
that after many months of severe drought, during which time every- 
thing had been dried up, the early rains left a small puddle of 
dirty fresh water, not much bigger than an ordinary hat; one- 
third water, two-thirds mud and slime. This single little hole 
was absolutely alive with water-beetles: upwards of 300 specimens 
were taken from it by Mr. Ussher, chiefly of one or two common 
species; but among them this, with three or four other novelties. 
I dedicate it to its captor, in recognition of his ardent love of 
Entomology, and of his hearty efforts to aid his brother naturalists 
by enriching their collections with African species. 
In the cabinets of Dr. Schaum and the Rev. H. Clark. 
10. H. paganus, n. sp. 
Oblongo-oyalis, parallelus, punctorum tri-serie ornatus, niger, 
nitidus : capite levi, rufo, ad basin transverse nigro ; thorace 
haud ad basin sinuato, anticé excavato, rufo-flavo, ad medium 
subtiliter fusco-adumbrato, marginibusque antico et postico 
nigris (hoc ad medium latiori, illo transverso quali attenuato) ; 
elytris parallelis, sat productis, punctorum seriebus 3 (puncta 
intervailo distantia, haud profunda, et aliquando obsoleta 
RZ 
